Investing Terms
Investing has more jargon than almost any corner of personal finance: asset classes, fund structures, account types, market measures, and the acronyms layered on top of all of it. These terms cover the vocabulary you meet when you put money to work in markets: what things are, how they behave, and what they cost.
The stakes of understanding it are practical, not academic. Most expensive investing mistakes start as vocabulary problems: confusing a fund with the account that holds it, or a return figure with the return you actually keep. Each definition below is written in plain English with a worked example, so the words stop being a barrier to good decisions.
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Essential investing terms
- Asset Allocation
Asset allocation is how you divide a portfolio among asset classes (mainly stocks, bonds, and cash), and it is the decision that most shapes how much your portfolio grows and how violently it swings along the way.
- Assets Under Management (AUM)
Assets under management (AUM) is the total market value of investments a firm manages on behalf of clients. In financial advice, "the AUM model" refers to charging clients an annual fee calculated as a percentage of the assets the advisor manages, commonly around 1%.
- Bitcoin
Bitcoin is the first and largest cryptocurrency, launched in 2009 and running on its own public blockchain with no issuer, no company behind it and a supply schedule written into its software. It is the asset the rest of the crypto market is priced and compared against.
- Bond
A bond is a debt security: a loan you make to a government or a company, which promises to pay you interest for a set period and to return the principal at maturity. Being a lender rather than an owner is what caps the upside and what puts you ahead of stockholders if the issuer fails.
- Brokerage Account
A brokerage account is an account at a broker-dealer used to buy, hold and sell securities. This page covers the ordinary taxable version, the one with no contribution limit, no withdrawal rules and no special tax treatment, and what is and is not protected inside it.
- Capital Gains Tax
Capital gains tax is the tax on profit from selling an asset for more than you paid. Assets held over one year get preferential long-term rates of 0%, 15%, or 20%; assets held a year or less are taxed as ordinary income.
- Consumer Price Index (CPI)
The Consumer Price Index is the Bureau of Labor Statistics measure of how prices paid by urban consumers change over time. There is no single "the CPI", because BLS publishes several versions of it, and three different ones govern federal tax brackets, the Social Security increase, and Series I savings bond rates.
- Cost Basis
Cost basis is what you are treated as having paid for an asset, and it is the figure subtracted from a sale price to produce a taxable gain or loss. The number that actually does that job is the adjusted basis, because basis changes over time.
- Crypto Taxes
Crypto taxes are the federal income tax rules that apply to digital assets. Because the IRS treats them as property rather than currency, every disposal is a taxable event, basis must be tracked wallet by wallet, and broker reporting is phasing in on two different dates.
- Cryptocurrency
A cryptocurrency is a digital asset recorded on a cryptographically secured distributed ledger and issued by no government or bank. Despite the name, federal tax law treats it as property rather than currency, and it sits outside both deposit insurance and most brokerage customer protection.
- Custodian
A custodian is the institution that holds your assets, keeps the records, settles the transactions, and sends you the statements. It does not choose the investments and does not guarantee their value, and inside a retirement account the tax code treats it as a trustee.
- Diversification
Diversification is spreading your investments across many securities and asset classes so that no single company, industry, or country can sink your portfolio: it removes single-holding risk, though not market risk.
All investing terms, A–Z
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- 0% Long-Term Capital Gains Rate
The 0% long-term capital gains rate is the lowest of the three federal rates that apply to most long-term capital gains and to qualified dividends. It applies to the part of a gain that falls below a taxable-income ceiling published each year, so part of a single sale can be taxed at 0% and the rest at 15%.
- 12b-1 Fee
A 12b-1 fee is an annual charge paid out of a mutual fund's own assets to cover the cost of distributing the fund and sometimes of servicing shareholders. It is named after the SEC rule that permits it, and that rule sets no limit on how large it can be.
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- Accredited Investor
An accredited investor is a person or entity that meets SEC wealth, income, or professional-credential thresholds, such as $1 million in net worth excluding the primary home, and is therefore allowed to invest in private securities offerings that aren't registered with the SEC.
- Accrued Interest
Accrued interest is interest that has been earned, or has been incurred, but has not yet been paid. On a bond it is the interest built up since the last coupon date; on a loan it is the interest that has run up since the last payment.
- Active Investing
Active investing is an approach in which the investor tries to do better than simply owning a broad market, by choosing which securities to hold or by choosing when to hold them. It is a claim about having better information or better judgment than whoever is on the other side of each trade, and it carries costs that arrive whether or not the claim turns out to be right.
- Active Management
Active management is a fund strategy in which a manager picks and trades holdings in an attempt to beat a market benchmark, rather than simply matching it. The effort adds cost, and the evidence that it pays off over time is weak.
- Actively Managed ETF
An actively managed ETF is an exchange-traded fund whose adviser chooses what it holds in pursuit of an objective, rather than tracking an index. Under the SEC's ETF rule it operates on exactly the same terms as an index ETF, and the price of that treatment is publishing its full portfolio every day.
- Adverse Selection
Adverse selection is what happens when the people most likely to need coverage are the most likely to buy it, and the seller cannot tell who is who. Left unaddressed it pushes the low-risk buyers out of a pool and drives the price up for whoever is left.
- Age-Based Asset Allocation
Age-based asset allocation sets the stock-and-bond mix from the investor's age alone. The best-known versions subtract age from 100, 110 or 120 and hold the result as a percentage in stocks.
- Agency Securities
Agency securities are debt issued or guaranteed by a federal agency or by a government-sponsored enterprise such as Fannie Mae, Freddie Mac or the Federal Home Loan Banks. Most of them are not backed by the full faith and credit of the United States, and the securities themselves say so.
- All-Time High
An all-time high is the highest level a price or index has ever reached. It is a fact about the past, not a signal about the future, and in a market that rises over long periods new highs are common rather than rare.
- Alpha
Alpha is the return an investment earns above or below what its market risk alone would predict. Positive alpha is the part of a result that looks like skill rather than simply riding the market.
- Altcoin
An altcoin is any cryptocurrency other than bitcoin. The word is market vernacular rather than a legal category: it appears in none of the federal documents that classify crypto assets, and it tells a buyer nothing about what an asset is, how it is regulated, or how risky it is.
- Alternative Investments
Alternative investments are assets that fall outside the three traditional categories of publicly traded stocks, bonds, and cash, such as private equity, hedge funds, private credit, real estate, commodities, and collectibles. Most share the same practical traits: limited access, illiquidity, opaque pricing, and high fees.
- Alternatives in 401(k)s
Alternatives in 401(k)s refers to whether and how private equity, private credit, real estate, and similar assets can appear in a workplace retirement plan's investment menu. Historically they almost never have, and the rules governing them are being actively rewritten and are not settled.
- American Depositary Receipt (ADR)
An American Depositary Receipt is a certificate issued by a US bank that represents a set number of shares of a non-US company held by the bank, so that the foreign stock can be bought, sold and paid dividends in US dollars through a US brokerage account. Most foreign stocks that trade in US markets trade this way.
- Analysis Paralysis
Analysis paralysis is when the effort to make a perfect financial decision, often in the face of too many options or too much information, prevents any decision from being made at all.
- Analyst Rating
An analyst rating is the categorical recommendation a research analyst attaches to a stock, such as buy, hold or sell. FINRA rules do not dictate the labels, but they require the firm to define each rating consistently with its plain meaning and to publish how often it uses each one.
- Angel Investing
Angel investing is an individual using their own money to back a very early startup, usually in exchange for equity or a note that later converts to equity. Angels invest before venture funds do, in smaller amounts, and accept that most of their companies will fail.
- Annual Report to Security Holders
An annual report to security holders is the report a company must send its shareholders alongside the proxy statement for a meeting at which directors are elected. It is required by the proxy rules, and unlike the annual report filed on Form 10-K it is not treated as filed with the SEC.
- Annualized Return
An annualized return converts an investment's total performance over any period into the equivalent constant yearly rate: the single per-year number that, compounded, would have produced the same result.
- Art Investing
Art investing is buying works of art in the expectation that they will sell for more later, either by owning the object outright or by buying shares in an entity that owns a single work. Its distinctive risks are legal rather than merely aesthetic: challenges to title, restitution claims and export restrictions all attach to the object itself.
- Asset Allocation
Asset allocation is how you divide a portfolio among asset classes (mainly stocks, bonds, and cash), and it is the decision that most shapes how much your portfolio grows and how violently it swings along the way.
- Asset Class
An asset class is a group of investments that share economic characteristics and tend to behave alike. The SEC's investor glossary defines the term in one sentence, as "investments that have similar characteristics," and names three main classes: stocks, bonds and cash.
- Assets Under Management (AUM)
Assets under management (AUM) is the total market value of investments a firm manages on behalf of clients. In financial advice, "the AUM model" refers to charging clients an annual fee calculated as a percentage of the assets the advisor manages, commonly around 1%.
- Authorized Participant
An authorized participant is a large financial firm with a contract letting it create and redeem exchange-traded fund shares directly with the fund, in big blocks. Ordinary investors never deal with one, and the trading they do is the reason an ETF's share price stays close to the value of what the fund holds.
- Availability Bias
Availability bias is the tendency to judge how likely something is by how easily examples of it come to mind, so events that are recent, vivid, or heavily reported feel more probable than they actually are.
- Average Cost Basis
Average cost basis figures your basis in a holding by averaging together what you paid across every purchase, rather than tracking each purchase as its own lot. It is available only for mutual fund shares and shares held in a dividend reinvestment plan, not for ordinary individual stocks.
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- Back-End Load
A back-end load is a sales charge on a mutual fund that you pay only if you sell within a set number of years. It usually steps down each year and reaches zero, so it rewards holding and penalizes an early exit.
- Backtesting
Backtesting is running an investment rule over historical data to see what it would have produced had someone actually followed it. The results were never earned by any real portfolio, which is why regulators classify them as hypothetical performance.
- Backwardation
Backwardation is the market condition in which futures prices for more distant delivery months are progressively lower than nearer ones. It is the opposite of contango, it usually signals that the physical commodity is scarce right now, and it is the condition in which rolling a long futures position forward adds to the return instead of subtracting from it.
- Bank Run
A bank run is a wave of depositors demanding their money back at the same time. It can close a bank that would have been fine left alone, because a bank holds long-dated assets against deposits repayable on demand, and the depositor who asks first is paid from cash while the loss falls on whoever waits.
- Basis Point
A basis point is one hundredth of a percentage point, so 100 basis points equal 1%. It exists to remove an ambiguity that plain percentages cannot: a rate "rising 1%" could mean a full percentage point or one percent of the rate, and those are very different numbers.
- Bear Market
A bear market is the label commentators apply to a sustained fall in stock prices, conventionally a decline of about 20 percent or more from a recent peak. The figure is a convention rather than a rule, it is applied only in hindsight, and it describes prices rather than the economy.
- Benchmark
A benchmark is the standard an investment's results are measured against, usually a published market index covering the same kind of holdings. For a registered fund the choice is not open-ended: SEC rules require comparison with an "appropriate broad-based securities market index" and set conditions on who may run it and what it must represent.
- Best Execution
Best execution is the duty a broker or an investment adviser owes when handling a customer's order: to use reasonable diligence to obtain the most favorable terms reasonably available, not merely to fill the order. It is a standard about process and diligence, not a guarantee of the best price.
- Beta
Beta measures how much a stock or fund tends to move when the overall market moves. A beta of 1 moves with the market, above 1 amplifies its swings, and below 1 dampens them.
- Bid-Ask Spread
The bid-ask spread is the gap between the highest price a buyer will pay and the lowest price a seller will accept for a security at a given moment. It is a cost of trading you pay on the way in and again on the way out, without it ever appearing on a statement.
- Bitcoin
Bitcoin is the first and largest cryptocurrency, launched in 2009 and running on its own public blockchain with no issuer, no company behind it and a supply schedule written into its software. It is the asset the rest of the crypto market is priced and compared against.
- Bitcoin Halving
The bitcoin halving is the automatic 50 percent cut in the reward paid for adding a block to the bitcoin blockchain, which happens every 210,000 blocks, roughly every four years. It is a rule in the software, triggered by a block count rather than by a date or a decision.
- Black Swan Event
A black swan event is Nassim Nicholas Taleb's term for an outcome that lies outside what past experience suggested was possible, carries an extreme impact, and is explained away as obvious after the fact. The third part is what makes the idea useful and what makes the label so easy to misuse.
- Blackout Period
A blackout period is a stretch of time in which someone is temporarily barred from acting on holdings they own. Three different windows go by the name, in two separate bodies of federal law and one set of company policies, and they do not mean the same thing.
- Blockchain
A blockchain is a shared, append-only record of transactions maintained by a network of computers rather than by a single institution. It is the underlying technology that cryptocurrencies run on, not a currency or an investment itself.
- Blue Sky Laws
Blue sky laws are the securities statutes of the individual states, which operate alongside the federal securities laws. They license firms and the people who sell, register or exempt offerings that federal law has not taken out of their hands, and they give state regulators their own antifraud authority.
- Blue-Chip Stock
A blue-chip stock is a share in a large, well-established, financially sound company with a long, reliable track record. It is a judgment about quality and reputation, not a precise category with fixed rules.
- Bond
A bond is a debt security: a loan you make to a government or a company, which promises to pay you interest for a set period and to return the principal at maturity. Being a lender rather than an owner is what caps the upside and what puts you ahead of stockholders if the issuer fails.
- Bond Duration
Duration measures how much a bond's price moves when interest rates move. The word names two related numbers: Macaulay duration, which is a length of time, and modified duration, which is a percentage price change per one percentage point change in yield.
- Bond Fund
A bond fund is a pooled fund that invests primarily in bonds and other debt securities. It solves the problem an individual bond cannot, which is credit diversification at ordinary sums, and it takes away the one thing an individual bond offers, which is a date.
- Bond Ladder
A bond ladder is a set of bonds bought with staggered maturity dates so that one comes due at regular intervals. What makes it different from a ladder of bank certificates is that each rung is a security with a market price, and that the credit behind the rungs does not stagger at all.
- Bond Premium
Bond premium is the amount by which a holder's basis in a bond exceeds the total the bond will pay back, other than its regular interest. The tax law lets a holder of a taxable bond spread that premium against the coupons, and requires a holder of a tax-exempt bond to do so.
- Bond Rating
A bond rating is a letter grade assigned by a credit rating agency that expresses its opinion of how likely a bond's issuer is to make every payment on time. It is a judgment about credit risk, not a prediction of the bond's price or a guarantee against loss.
- Bond Yield
A bond's yield is the return it produces, stated as an annual percentage of what the bond costs. The word names several different numbers rather than one, and the differences between them are the point.
- Book Value
Book value is a company's assets minus its liabilities: the net worth recorded on its balance sheet. It is an accounting figure, not a market price, and the two can differ sharply.
- Broker-Dealer
A broker-dealer is a firm licensed to buy and sell securities: for customers (acting as broker), and for its own account (acting as dealer). Broker-dealers register with the SEC, join FINRA, and operate under Regulation Best Interest when recommending investments to retail customers.
- Brokerage Account
A brokerage account is an account at a broker-dealer used to buy, hold and sell securities. This page covers the ordinary taxable version, the one with no contribution limit, no withdrawal rules and no special tax treatment, and what is and is not protected inside it.
- Brokerage Account Statement
A brokerage account statement is the periodic report a brokerage firm sends a customer showing positions, balances and activity for the period. FINRA requires one at least quarterly, and it carries an instruction that is easy to skip and legally important: report any inaccuracy or discrepancy promptly.
- Brokered CD
A brokered CD is a bank certificate of deposit bought through a brokerage firm or other deposit broker rather than from the bank directly. The intermediary is where the extra risk sits: whether the money actually reached an insured bank, how the deposit is titled, and whether anyone will buy the CD back before it matures.
- BRRRR Method (BRRRR)
BRRRR stands for buy, rehab, rent, refinance, repeat: a rental-property strategy that aims to recover the money put into a property through a refinance, then use the same money again. It is not a lending product and no agency defines it, but the refinance rules that decide whether it works are written down.
- Bucket Strategy
A bucket strategy divides a retirement portfolio into segments by time horizon (near-term cash, medium-term bonds, long-term stocks), so that spending in a falling market comes out of the cash segment instead of forcing a sale of stocks at a loss.
- Buffer ETF
A buffer ETF is an exchange-traded fund that uses options to absorb a stated first slice of an index's losses over a set period, in exchange for a ceiling on how much of the index's gain it can pass through over that same period. The protection is the fund's objective, not a promise.
- Bull Market
A bull market is the label applied to a sustained rise in stock prices, conventionally a gain of about 20 percent from a recent low. Like its counterpart, it is a description rather than a legal test, it is applied in hindsight, and its age tells you nothing about what happens next.
- Business Cycle
The business cycle is the alternation of an economy between expansion and recession. In the United States the turning points are dated month by month by the National Bureau of Economic Research, and only in retrospect, so the published chronology is a record of the past rather than a reading of the present.
- Buy-and-Hold
Buy-and-hold describes an investor who keeps what they buy rather than trading in and out of it. It is a claim about holding period and nothing else, so it says nothing about what is held, and it is compatible with a portfolio that is badly diversified.
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- Call Option
A call option is an options contract that gives its buyer the right, but not the obligation, to buy the underlying security at a fixed strike price on or before expiration. The seller, or writer, of that same contract takes on the matching obligation to sell if the buyer exercises.
- Callable Bond
A callable bond is a bond the issuer may repay before its maturity date, at a price and on dates written into the bond contract. The issuer will use that right when it serves the issuer, which is usually after interest rates have fallen.
- Capital Call
A capital call is a private fund's demand that an investor send in part of the money they already committed. The investor's obligation is created when they sign the subscription agreement, not when the notice arrives, and failing to meet a call has consequences written into the fund's own agreement.
- Capital Gain
A capital gain is the profit realized when you sell a capital asset for more than its adjusted basis. The tax code never defines the bare phrase: it defines the capital asset, and it defines short-term and long-term gains by how long the asset was held.
- Capital Gains Distribution
A capital gains distribution is a fund's payout of the net capital gains it realized inside the portfolio, made to whoever holds shares on the record date. It is taxable in a taxable account even if you bought recently, sold nothing, and are holding the fund at a loss.
- Capital Gains Tax
Capital gains tax is the tax on profit from selling an asset for more than you paid. Assets held over one year get preferential long-term rates of 0%, 15%, or 20%; assets held a year or less are taxed as ordinary income.
- Capital Loss
A capital loss is the shortfall when a capital asset is sold for less than its adjusted basis. Whether it is deductible is a separate question from whether it exists: IRC 165(c) allows an individual a loss deduction only for business, profit-seeking or casualty losses, so a loss on personal property produces nothing.
- Capital Loss Carryover
A capital loss carryover is the part of a net capital loss that a taxpayer could not use this year and carries into the next one. For an individual it never expires, it keeps its short-term or long-term character, and it is used automatically rather than saved for a better year.
- Capitalization Rate
A capitalization rate is a property's annual net operating income divided by its price or value, expressed as a percentage. It is a price restated as a yield, which is useful for comparing buildings and useless for describing what a particular buyer will earn, because financing sits outside the calculation.
- Carried Interest
Carried interest is the share of a private fund's profits that goes to the manager as a reward for gains rather than as a fee on assets. Its tax treatment depends on a rule that requires the fund to have held the underlying asset more than three years, not the usual one.
- Cash Account
A cash account is a brokerage account in which every purchase must be paid for in full with money already in the account, and nothing is borrowed from the broker. It is the default kind of account for most investors, and its rules come from the Federal Reserve's Regulation T, which sets how quickly a purchase must be paid for and what happens when it is not.
- Cash Drag
Cash drag is the reduction in a portfolio's return caused by the portion of it sitting in cash instead of in the assets it was meant to hold. It is arithmetic, and it can be measured exactly.
- Cash Equivalents
Cash equivalents are holdings that behave like cash: they can be turned into spendable money quickly and at a value you can predict. They are the third of the three broad asset classes, alongside stocks and bonds, and they are safe in one specific sense rather than in every sense.
- Cash Management Account (CMA)
A cash management account is a brokerage product that attaches everyday payment features to a securities account and automatically moves the uninvested cash somewhere it earns interest or dividends. The name is a product name rather than a legal category, so what protects the cash depends entirely on where the account has parked it.
- Cash-Secured Put
A cash-secured put is the strategy of selling a put option while holding, in the same account, the full cash needed to buy the shares if the option is exercised. The writer keeps the premium, and in exchange takes on a real obligation to buy the stock at the strike price no matter how far it has fallen.
- Cboe Volatility Index (VIX)
The Cboe Volatility Index, known as the VIX, is a benchmark that estimates how much the S&P 500 is expected to move over the next 30 days, inferred from the prices of S&P 500 index options. It is an index rather than a security, so it cannot be bought or held directly.
- Central Bank Digital Currency (CBDC)
A central bank digital currency (CBDC) is digital money that is a direct liability of a central bank rather than of a commercial bank or a private company. No United States CBDC exists, and a 2025 executive order directs federal agencies to stop working on one.
- Chapter 11 Bankruptcy
Chapter 11 bankruptcy is the reorganization chapter of the federal Bankruptcy Code, under which a business keeps operating while a court-supervised plan restructures what it owes. For the company's investors the central fact is the order of payment: creditors are paid before shareholders, and a confirmed plan usually cancels the old common stock and hands the new shares to the creditors.
- Checkbook IRA
A checkbook IRA is a self-directed IRA that invests in a limited liability company the account owner manages, so the owner can write checks from the company's bank account instead of asking a custodian to process each transaction. The tax code has no such term, and the arrangement does not change the rules that apply to the IRA.
- Circuit Breaker
A circuit breaker is a rule that pauses trading when prices fall far and fast, so that everyone gets a few minutes to take stock. US markets run two kinds: market-wide halts keyed to the S&P 500, and a separate mechanism that pauses individual stocks.
- Clearing House
A clearing house is an institution that stands between the two sides of a securities or derivatives trade, guaranteeing that both sides will be paid and delivered as agreed, even if one of the original counterparties fails. DTCC's subsidiaries and the Options Clearing Corporation perform this role in US markets.
- Closed-End Fund
A closed-end fund raises a fixed pool of money once, then its shares trade on an exchange between investors. Because the share count is fixed, the market price can drift above or below the value of what the fund actually holds.
- Closet Indexing
Closet indexing is a fund holding a portfolio very close to its benchmark index while presenting itself as actively managed and charging an active fee. The investor pays for judgment and receives something close to the index.
- Cold Wallet
A cold wallet stores cryptocurrency keys offline, on a hardware device or even paper, so they never touch the internet. This makes theft far harder, at the cost of convenience and a real risk of permanent loss.
- Collectibles
Collectibles are physical objects such as art, wine, classic cars, coins, and trading cards held for price appreciation rather than income. They produce no cash flow, cost money to authenticate, store, and insure, and their long-term gains carry a higher maximum tax rate than stocks.
- Collective Investment Trust (CIT)
A collective investment trust is a pooled investment fund maintained by a bank for the assets of tax-exempt retirement plans. It works much like a mutual fund inside a 401(k) menu, but it is a banking product rather than a securities product, so it has no ticker, no prospectus and no public quote.
- Commission-Free Trading
Commission-free trading is the retail brokerage pricing model in which online orders for US-listed stocks and ETFs carry no per-trade charge. The execution really is free of commission; the firm is paid in other ways, and the trade still has costs that never appear on the confirmation.
- Commodities
Commodities are basic raw materials, such as oil, natural gas, metals, and agricultural products, that can be bought and sold as investments. They produce no income, are usually accessed through futures or funds rather than physical goods, and are often held as an inflation hedge.
- Commodity ETP
A commodity ETP is an exchange-traded product that gives a brokerage account exposure to commodities such as gold, oil or a broad basket of raw materials. Most of them are not registered investment companies, so despite trading like a fund and often being called a commodity ETF, a different rulebook applies.
- Concentrated Stock Position
A concentrated stock position is a single stock that makes up an outsized share of a household's wealth, most often accumulated employer stock. Unwinding one is complicated by taxes on the built-in gain, and sometimes by trading restrictions, which is why several specialized tools exist for it.
- Concentration Risk
Concentration risk is the risk that comes from having too much riding on one thing. It is a property of a household's whole position rather than of any security, which is why it can hide in a portfolio that looks diversified on paper.
- Confirmation Bias
Confirmation bias is the tendency to look for, notice and give weight to evidence that supports what you already believe. The failure is usually in the search rather than in the reasoning, which is why it survives in careful people.
- Consolidated Reporting Statement
A consolidated reporting statement is the year-end package a broker sends one customer, combining several Forms 1099 for the same account into a single document. Because those statements travel together, the whole package is due February 15 rather than the January 31 that would otherwise apply to some of them.
- Consumer Confidence Index
The Consumer Confidence Index is a monthly survey-based measure of how U.S. households view business and employment conditions now and six months ahead. It is published by The Conference Board, and because its scale is anchored to the average of an arbitrary base year, the level of the index carries far less information than the change in it.
- Consumer Price Index (CPI)
The Consumer Price Index is the Bureau of Labor Statistics measure of how prices paid by urban consumers change over time. There is no single "the CPI", because BLS publishes several versions of it, and three different ones govern federal tax brackets, the Social Security increase, and Series I savings bond rates.
- Contango
Contango is the market condition in which futures prices for later delivery months are progressively higher than the price for the nearest delivery month. It is the normal shape for a commodity that costs money to store and finance, and it is what makes a futures position expensive to keep rolling forward.
- Convertible Bond
A convertible bond is a corporate bond that its holder can exchange for a set number of the issuer's common shares. Until it is converted it pays interest and ranks as debt; the conversion right is what gives it a share of the stock's upside.
- Core Inflation
Core inflation is inflation measured with food and energy prices removed. It is the Federal Reserve's working vocabulary and a forecasting tool, and it is not the number a household should use to plan its own budget.
- Core-and-Satellite Portfolio
A core-and-satellite portfolio holds most of its money in broad, low-cost index funds (the core) and a deliberately small remainder in concentrated or actively managed positions (the satellites), so any bet that goes wrong is capped at a known fraction of the whole.
- Corporate Bond
A corporate bond is a loan to a company, repaid with interest on a stated schedule. Buying one means buying two things at once: a rate of interest, and a judgment about whether that particular company will still be paying.
- Corrected 1099
A corrected 1099 is a replacement information return a payer issues after discovering an error in one it already filed or already sent you. It is not a separate form: it is the same form with the "CORRECTED" box checked, and some errors take two documents to fix rather than one.
- Correlation
Correlation measures how closely two investments' returns move together, on a scale from −1 to +1. Combining assets that do not move in lockstep is what makes diversification reduce risk.
- Cost Basis
Cost basis is what you are treated as having paid for an asset, and it is the figure subtracted from a sale price to produce a taxable gain or loss. The number that actually does that job is the adjusted basis, because basis changes over time.
- Cost of Living
Cost of living is the amount of money needed to cover basic expenses (housing, food, transportation, healthcare, and taxes) in a particular place at a particular time.
- Coupon Rate
A coupon rate is the fixed annual interest a bond pays, stated as a percentage of the bond's face value rather than of its market price. A 5 percent bond with a $1,000 face value pays $50 a year for the life of the bond.
- Covered Call
A covered call is an income strategy in which an investor who already owns at least 100 shares of a stock sells a call option against that holding. The premium is income the investor keeps, and in exchange the upside on the shares is capped at the strike price for the life of the contract.
- Creation Unit
A creation unit is the block of shares in which an exchange-traded fund issues and redeems its own shares, exchanged with an authorized participant for a basket of assets plus a cash adjustment. It is a defined term in the SEC's ETF rule, and it is large enough that an individual investor never handles one.
- Credit Risk
Credit risk is the risk that a borrower or bond issuer fails to meet its obligations, causing the lender or investor a loss. It is broader than outright default, because it also captures downgrades and widening credit spreads that lower a bond's price even when no payment has been missed.
- Crowdfunded Investments
Crowdfunded investing is buying a stake, in equity or debt, in a private company through an SEC-registered online portal. Unlike donation crowdfunding, you receive a security; unlike angel investing, it is open to ordinary investors within annual limits set by federal rules.
- Crypto Airdrop
A crypto airdrop is a distribution of a crypto asset to many ledger addresses at once, usually for no payment. Receiving one is generally ordinary income at the asset's value when the recipient gains control of it, even though nothing was paid for it.
- Crypto Allocation
Crypto allocation is the decision of how much of a portfolio, if any, to hold in cryptocurrency, and how to size that position so its extreme volatility cannot sink the overall plan.
- Crypto Custody
Crypto custody is the business of holding crypto assets for someone else. The question it answers is not where the keys sit but which institution is holding them and under what law, because a bank, a registered adviser's qualified custodian and a crypto trading platform are three different legal positions for the customer.
- Crypto Estate Planning
Crypto estate planning is arranging in advance for someone else to be able to reach your crypto after you die. It is a distinct problem because the private key is the asset, so an executor with complete legal authority and no key recovers nothing.
- Crypto Exchange
A crypto exchange is a platform where people buy, sell, and trade cryptocurrency. A centralized exchange holds your coins for you like a brokerage, which is convenient but means the platform, not you, controls the keys.
- Crypto in Retirement Accounts
Holding cryptocurrency inside a tax-advantaged retirement account, such as an IRA or 401(k), is possible through a few specific routes, each with its own custody rules, tax traps, and a policy landscape that is still shifting.
- Crypto Lending
Crypto lending covers two opposite arrangements sold under one name: handing crypto to a platform in return for a yield, and pledging crypto as collateral to borrow cash. The first generally makes you a creditor of the platform; the second keeps the asset and adds the risk of forced sale.
- Crypto Mining
Crypto mining is the process of using computing power to validate transactions and add blocks to a proof-of-work blockchain, earning newly issued coins as a reward. Those rewards are taxable income when received.
- Crypto Taxes
Crypto taxes are the federal income tax rules that apply to digital assets. Because the IRS treats them as property rather than currency, every disposal is a taxable event, basis must be tracked wallet by wallet, and broker reporting is phasing in on two different dates.
- Crypto Token
A crypto token is a digital asset issued on a blockchain that somebody else operates, rather than being that blockchain's own native asset. Holding one is an exposure to two things at once: the token, and the network it depends on to exist and to move.
- Crypto Wallet
A crypto wallet is a tool that stores the cryptographic keys used to access and spend cryptocurrency. Despite the name, it holds keys, not coins, and whoever controls the keys controls the crypto.
- Cryptocurrency
A cryptocurrency is a digital asset recorded on a cryptographically secured distributed ledger and issued by no government or bank. Despite the name, federal tax law treats it as property rather than currency, and it sits outside both deposit insurance and most brokerage customer protection.
- Currency Devaluation
A currency devaluation is a deliberate decision by a government or central bank to lower the official value of its own currency against gold or another currency. It is only possible where the exchange rate is fixed by the authorities, which is why a floating currency like the dollar depreciates rather than being devalued.
- Currency Risk
Currency risk is the risk that a change in exchange rates reduces the home-currency value of a foreign investment or income, even when the underlying asset performs well in its own currency.
- Custodian
A custodian is the institution that holds your assets, keeps the records, settles the transactions, and sends you the statements. It does not choose the investments and does not guarantee their value, and inside a retirement account the tax code treats it as a trustee.
D
- Dark Pool
A dark pool is a trading venue that matches buyers and sellers without displaying their orders to the public. The phrase is industry vernacular with no regulatory definition; in US rules the category is an alternative trading system, and the venue's own operating rules are a public filing.
- Day Trading
Day trading is buying and selling the same security within a single trading day. It is also a defined term in the margin rules, and those rules are currently mid-transition, so the requirements that apply to a particular account depend on which regime that account's brokerage firm has moved to.
- De Minimis Rule (Bond Discount)
The de minimis rule for bond discount treats a small discount as zero for tax purposes. The threshold is one quarter of one percent of the bond's stated redemption price at maturity for each complete year to maturity, and the same formula appears twice in the tax code, once for original issue discount and once for market discount.
- Debt Ceiling
The debt ceiling is the legal cap Congress sets on how much the federal government may borrow. Because spending is already authorized separately, reaching the cap does not cut spending; it threatens the government's ability to pay bills it has already committed to.
- Decentralized Exchange (DEX)
A decentralized exchange, or DEX, is a software protocol that swaps digital assets automatically. Most price trades against a pooled reserve of the two assets rather than by matching buyers with sellers, which is why the price you get depends on how big your order is relative to the pool.
- Decentralized Finance (DeFi)
Decentralized finance (DeFi) refers to financial services such as lending, borrowing, and trading built on blockchain smart contracts that run automatically, without a bank, broker, or other intermediary in the middle.
- Default Risk
Default risk is the specific chance that a borrower, whether a company, a government, or an individual, fails to repay a debt as promised. It is the core component of the broader concept of credit risk, and it is what a bond's credit rating and yield spread are largely trying to price.
- Deflation
Deflation is a sustained fall in the general price level, so that each dollar buys more over time. It is the opposite of inflation, and it is far more damaging to an economy than mild inflation is.
- Delisting
Delisting is the removal of a class of securities from trading on a national securities exchange, either because the exchange has found the company no longer meets its continued-listing standards or because the company has asked to leave. A delisted stock usually keeps trading over the counter, and delisting by itself does not end the company's obligation to file reports with the SEC.
- Derivative
A derivative is a financial contract whose value is derived from the price of something else, an underlying asset, rate, or index, rather than having value on its own. Options, futures, forwards, and swaps are all derivatives.
- Developed Markets
Developed markets are the mature, high-income, well-regulated economies that index providers classify as the most established, such as Japan, the United Kingdom, and Germany. The label is an index-provider judgment, and providers do not always agree on it.
- Digital Engagement Practices (DEP)
Digital engagement practices are the design features a brokerage or advice app uses to influence what an investor does, from behavioral prompts and game-like elements to individually targeted marketing. The SEC named and described the category in 2021, asked the public about it, and has not regulated it.
- Digital Estate Planning
Digital estate planning is deciding, in advance and in a form a platform will honor, who may get into your online accounts if you die or lose capacity. In states that have enacted the Revised Uniform Fiduciary Access to Digital Assets Act, the answer depends on whether you used the platform's own tool, and on whether the request is for the contents of your messages or merely for a record of them.
- Direct Indexing
Direct indexing means holding the individual stocks that make up an index rather than holding a fund that tracks it. The index exposure is similar; what differs is that each holding is separately owned, which allows losses to be taken on individual positions and specific companies to be left out.
- Direct Listing
A direct listing is a way for a private company to have its shares trade on a stock exchange without an underwritten offering: instead of selling a block of shares to underwriters at a negotiated price, the company registers its shares and lets them open for trading in the exchange's first-day auction, where existing holders sell and, in the newer form, the company can sell new shares too.
- Direct Stock Plan
A direct stock plan is an arrangement under which a company sells its own shares to investors directly, through the company or its transfer agent rather than through the investor's brokerage account. It is the name the SEC uses; most people call the same thing a direct stock purchase plan.
- Discount Rate
A discount rate is the annual rate used to convert future dollars into today's dollars. The same two words also name three unrelated rates in American finance, including a Federal Reserve lending rate and a Treasury bill pricing convention, so the first question about any discount rate is which one it is.
- Discretionary Authority
Discretionary authority is the power a client grants an investment adviser to buy and sell investments in the client's account without asking permission before each trade.
- Disinflation
Disinflation is a slowdown in the rate at which prices are rising. Prices are still going up, just more slowly, so the price level a household actually pays stays where the earlier inflation left it.
- Disposition Effect
The disposition effect is the documented tendency of investors to sell investments that have gained value too early while holding on to those that have lost value too long, the opposite of what is usually best after taxes.
- Diversification
Diversification is spreading your investments across many securities and asset classes so that no single company, industry, or country can sink your portfolio: it removes single-holding risk, though not market risk.
- Dividend
A dividend is a distribution of a company's earnings to its shareholders, declared by the board rather than owed to anyone. How it is taxed depends on what kind of company paid it and, in most cases, on how long the shares were held around the date the dividend was priced out of them.
- Dividend Aristocrats
Dividend Aristocrats is the name of a specific stock index run by S&P Dow Jones Indices, holding S&P 500 companies that have raised their dividend every year for at least 25 consecutive years. It is a brand and a rule set, not a general description of reliable dividend payers.
- Dividend Discount Model (DDM)
The dividend discount model values a share of stock as the present value of all the dividends it will ever pay. Its usual form assumes dividends grow at one constant rate forever, which makes it easy to compute and extremely sensitive to the two assumptions it rests on.
- Dividend Investing
Dividend investing is the strategy of building a portfolio around companies that pay cash out to shareholders, in order to receive a recurring income from holdings you do not sell. It is two different strategies wearing one name, and the difference between them is the difference between a high payout now and a rising one later.
- Dividend Reinvestment Plan (DRIP)
A dividend reinvestment plan automatically uses the cash a holding pays out to buy more of it instead of depositing the cash. In a taxable account the distribution is still taxed in the year it is paid, and every reinvestment creates a new tax lot with its own cost basis and its own holding period.
- Dividend Yield
Dividend yield is the annual dividend per share divided by the share price, expressed as a percentage. Because the price sits in the denominator, a yield can rise for the encouraging reason that the payment went up or the discouraging reason that the price went down, and the figure alone does not say which.
- Dollar-Cost Averaging (DCA)
Dollar-cost averaging (DCA) is investing a fixed dollar amount on a regular schedule regardless of market conditions, so you automatically buy more shares when prices are low and fewer when they are high.
- Dow Jones Industrial Average (DJIA)
The Dow Jones Industrial Average is a stock index of 30 large, well-known U.S. companies. Unlike most modern indexes, it is price-weighted, so a stock's influence depends on its share price rather than the size of the company.
- Drawdown
A drawdown is the fall in an investment's value from a previous peak to a later low, expressed as a percentage of the peak. It measures how far something actually fell and how long it stayed down, which is a different question from how much it bounces around.
- Dry Powder
Dry powder is cash held deliberately and left uninvested so it can be deployed when an opportunity appears. In institutional use it has a narrower meaning: capital investors have committed to a fund that the fund has not yet called.
E
- Earnings Call
An earnings call is the conference call or webcast a company holds to discuss results it has just announced. No rule requires one, but a Form 8-K rule sets four conditions that in practice decide when the call happens and whether the public can listen.
- Earnings Guidance
Earnings guidance is a company's own forecast of its future financial results, given to investors outside its required filings. Nothing compels a company to publish one, and three separate rule sets govern how it must be presented if it does.
- Earnings Per Share (EPS)
Earnings per share is a company's profit divided by the number of shares outstanding: the profit attributable to a single share. It is the denominator of the price-to-earnings ratio and a standard yardstick of profitability.
- Earnings Season
Earnings season is the recurring few weeks after each quarter ends when most public companies report their results. It exists because SEC filing deadlines run from each company's own fiscal year end, and a large share of listed companies share the same one.
- Economic Depression
An economic depression is an unusually severe and prolonged contraction. It is a description rather than an official category, it is used in two different senses that cover different spans of time, and the body that dates US recessions says it does not identify depressions at all.
- Efficient Market Hypothesis (EMH)
The efficient market hypothesis holds that asset prices already reflect available information, so consistently beating the market through analysis is very hard. It is the central argument for low-cost index investing.
- Emerging Markets
Emerging markets are countries an index provider has classified as neither fully developed nor frontier. The SEC does not define it, two of the largest providers disagree about which countries belong, and one country they disagree about accounts for a fifth of the MSCI emerging markets index.
- Employee Stock Ownership Plan (ESOP)
An employee stock ownership plan is a qualified retirement plan designed to invest primarily in the employer's own stock, which the employer contributes. It is the one retirement plan ERISA expressly excuses from the duty to diversify, and that exception is the whole of what makes it different.
- Equity Risk Premium (ERP)
The equity risk premium is the extra return investors expect from the stock market as a whole, above the return on a risk-free asset, for bearing the risk of owning stocks. It is the single most important input in most long-run return estimates.
- ESG Investing
ESG investing means choosing investments with reference to environmental, social or governance factors. No single definition governs what the label covers, and the one place US law bites is the fund's name: a fund whose name suggests ESG must put 80% of its assets behind whatever it says the term means.
- Ethereum
Ethereum is a public blockchain network whose native asset is ether (ETH). Its distinguishing feature is that it runs programs called smart contracts, which is why it is often described as a programmable blockchain rather than only a payment ledger.
- Ex-Dividend Date
The ex-dividend date is the first day a stock trades without the right to the next declared dividend. Buy on or after it and the seller keeps the payment, not you, which is why this one date decides who actually gets a dividend.
- Exchange Rate
An exchange rate is the price of one currency expressed in another, for example how many U.S. dollars it takes to buy one euro. It is the number that governs every cross-border conversion, payment and investment, and it moves constantly for freely traded currencies.
- Exchange-Traded Fund (ETF)
An exchange-traded fund (ETF) is an investment fund that holds a basket of securities and trades on a stock exchange like an individual stock, so you can buy or sell shares any time the market is open.
- Exchange-Traded Note (ETN)
An exchange-traded note is an unsecured debt security issued by a bank that trades on a stock exchange and pays a return linked to an index. It holds nothing: what a buyer owns is the issuer's promise to pay, so the note can be worth little or nothing if the issuer fails, whatever the index did.
- Expense Ratio
An expense ratio is the annual cost of owning a fund, expressed as a percentage of your investment: a 0.50% expense ratio costs $50 per year on a $10,000 balance, deducted automatically from the fund's returns.
- Extended Hours Trading
Extended hours trading is trading in a security outside regular trading hours, which Regulation NMS fixes at 9:30 a.m. to 4 p.m. Eastern Time. FINRA treats the sessions before the open and after the close as one regulated activity and requires your broker to disclose six specific risks before letting you trade in either.
F
- Factor Investing
Factor investing builds portfolios around specific, measurable characteristics (such as value, size, momentum, quality, and low volatility) that research has linked to higher long-run returns, rather than around individual stock picks.
- Farmland Investing
Farmland investing is owning agricultural land for the rent a farmer pays to use it plus any appreciation in the land's value. It is one of the few real assets that produces income every year and has published government data behind it, and one of the hardest to buy, because most farmland changes hands within families rather than on the open market.
- Federal Funds Rate
The federal funds rate is what banks charge each other for borrowing overnight. The Federal Reserve does not set it directly: it sets a target range and steers the market rate inside it, eight scheduled times a year.
- Federal Reserve
The Federal Reserve is the central bank of the United States. Congress gave it three statutory goals, it calls the mandate "dual" for a reason it explains itself, and its one numerical target is 2 percent inflation measured on a price index that is not the CPI.
- Fill-or-Kill Order
A fill-or-kill order is an instruction to execute the whole order immediately or cancel it, with no partial fill and no waiting. It combines two separate conditions, entirety and immediacy, which is why it fills less often than either condition would on its own.
- First-In, First-Out (FIFO)
First-in, first-out is the default rule for figuring which shares of stock a sale counts as coming from when you have not told your broker otherwise. It treats the oldest shares you own as the ones sold first, which in a long-rising market tends to produce the largest possible taxable gain.
- Fiscal Policy
Fiscal policy is the government's use of taxing and spending to influence the economy. In the United States it is set by Congress and the President, which distinguishes it from monetary policy, run by the Federal Reserve.
- Fixed Income
Fixed income is the label for the part of a portfolio made up of lending rather than owning: bonds and bond funds, but also certificates of deposit, Treasury bills, money market funds and stable value options. It is a category name used on statements and plan menus, not a single product.
- Flash Crash
A flash crash is a sudden, very steep fall in prices that reverses within minutes. The term comes from 6 May 2010, when the Dow dropped about 9 percent in thirteen minutes, a tail of individual stocks traded at absurd prices, some as low as a penny, and almost all of it came back the same afternoon.
- Floating Rate Note (FRN)
A floating rate note is a debt security whose interest rate is not fixed but resets on a schedule to a reference rate plus a spread set when the note was issued. The US Treasury's version resets weekly to the latest 13-week bill auction rate, pays quarterly and matures in two years, so its price stays close to par while its income rises and falls with short-term rates.
- FOMO Investing (FOMO)
FOMO investing is buying an asset mainly because it has been rising and others appear to be profiting, driven by the fear of missing out rather than by any judgment about what the asset is worth.
- Form 10-K
Form 10-K is the annual report a public company files with the SEC under the Exchange Act. It is the filed, audited account of the business, and being filed is what exposes it to a liability provision that furnished documents escape.
- Form 1099-B
Form 1099-B is the return a broker files reporting what you sold and what you received for it. Its official title is "Proceeds From Broker and Barter Exchange Transactions", and the detail that decides everything else is that it reports your cost basis only for some of what you own.
- Form 1099-DIV
Form 1099-DIV is the return a company, fund or broker files reporting the distributions it paid you on stock. Its official title is "Dividends and Distributions", and the second word is doing real work: several of its boxes report things that are not dividends at all.
- Fractional Ownership
Fractional ownership is an arrangement in which several people own one asset together and divide its use and its running costs in proportion to their shares. In real estate it usually means a small number of owners of one property, each holding a real equity share rather than a right to book a week.
- Fractional Shares
A fractional share is ownership of less than one whole share of a security. How one behaves, including whether it carries voting rights and whether it can be moved to another firm, is generally determined by your brokerage firm's program rather than by the security itself.
- Front-End Load
A front-end load is a sales charge taken out of your money at the moment you buy a mutual fund, so less than the full amount you pay is actually invested. It is charged once, not every year, and it can shrink at higher purchase amounts.
- Fully Paid Securities Lending
Fully paid securities lending is a program in which a brokerage firm borrows the shares a customer owns outright and pays the customer a fee for them. It is optional by statute, and the rules that govern it are mostly disclosure rules rather than protections.
- Fund Fact Sheet
A fund fact sheet is the one- or two-page summary a fund company publishes, usually each quarter, showing a fund's objective, performance, costs, top holdings and manager. It is marketing material rather than the legal offering document.
- Fund of Funds
A fund of funds is a fund whose portfolio is made up of other funds rather than of individual stocks or bonds. The structure buys diversification and a manager's allocation decisions, and it adds a second layer of fees that federal disclosure rules require to be shown as a separate line.
- Fundamental Analysis
Fundamental analysis is the practice of estimating what a security is actually worth by studying the business behind it, its financial statements, earnings, cash flow, and competitive position, then comparing that estimate to what the market is charging for it.
- Futures Contract
A futures contract is a standardized agreement, traded on an exchange, to buy or sell a specific quantity of an asset at a set price on a specific future date. Both sides are obligated to perform, and gains and losses are settled in cash every day the position is open.
G
- Gambler's Fallacy
The gambler's fallacy is the belief that a run of one outcome makes the opposite outcome more likely, as though chance owed a correction. In money decisions it shows up as treating a long decline as evidence that a rise is due.
- Gas Fees
A gas fee is the charge for having a blockchain network do work: run a transaction or a piece of contract code. It is paid in the network's own asset, it varies with demand rather than with the value being moved, and on Ethereum part of it is destroyed rather than paid to anyone.
- General Obligation Bond
A general obligation bond is a municipal bond repaid from the issuer's general funds and backed by its pledge of full faith and credit, which usually includes its power to tax. It is not secured by any specific asset or revenue stream.
- Gig Economy
The gig economy is the market for short-term, on-demand, and platform-based work, where people are paid per task or per project rather than in a salaried job. For taxes, gig workers are usually treated as self-employed, which changes what they owe and who withholds it.
- Glide Path
A glide path is a schedule for how an investment mix changes over time, almost always shifting from more stocks toward more bonds as a target date approaches. A target-date fund is one packaged product that follows a glide path; the concept itself is broader than any fund.
- Gold Investing
Gold investing means holding gold for its price rather than for any income it produces, through bullion and coins, an exchange-traded product, futures, or the shares of mining companies. The routes differ sharply in cost, custody and tax, and gain on the metal carries its own higher capital-gains ceiling.
- Gold Standard
A gold standard is a monetary system in which a country's currency is convertible into gold at a price fixed by law. The United States was on one from the nineteenth century until 1933 at home and until 1971 for foreign governments, and 31 U.S.C. 5118 now provides that the government "may not pay out any gold coin."
- Good-Till-Canceled Order (GTC)
A good-till-canceled order is an order carrying a time-in-force instruction that keeps it working across trading sessions instead of expiring at the end of the day. What "till canceled" actually means is set by the venue, and on at least one major equities market it meant one year before the order type was withdrawn entirely.
- Government Shutdown
A government shutdown is a lapse in federal funding that furloughs many federal workers and pauses many government services. Its personal-finance effects are mostly about timing: paychecks, benefit processing, loans, and certain filings can be delayed, even when the underlying money is eventually paid.
- Greedflation
Greedflation is an informal name for the hypothesis that firms drove inflation by raising prices faster than their production costs rose. A Federal Reserve Bank study states the idea and also states the accounting point that decides it: profits have no direct relationship to inflation, and the quantity that does is growth in the markup.
- Gross Domestic Product (GDP)
Gross domestic product is the total value of the final goods and services produced in a country over a period, the standard headline measure of the size and growth of an economy. In the United States it is estimated by the Bureau of Economic Analysis.
- Growth Investing
Growth investing is the strategy of deliberately holding more of the companies expected to expand quickly than a broad market fund would hold, and paying a higher price for each dollar of current earnings to do it. The return depends on two separate things going right, not one.
- Growth Stock
A growth stock is a share in a company whose revenue and earnings are expanding, or are expected to, and which typically returns value to shareholders through a rising share price rather than through dividends. There is no definition to look up, which is why two funds with "growth" in their names can hold noticeably different things.
- Guaranteed Return Red Flag
A guaranteed high return is one of the clearest warning signs of investment fraud, because higher expected returns come with higher risk and almost nothing legitimate can promise a large return with little or none.
H
- Hard Fork
A hard fork is a change to a blockchain's rules that is not backward compatible, so nodes that do not upgrade reject the new blocks. Where a meaningful number of them keep running the old software, the ledger splits permanently and two chains carry on side by side.
- Hedge Fund
A hedge fund is a private investment fund, open only to wealthy and institutional investors, that pursues returns using strategies a mutual fund cannot, such as short selling, leverage, and derivatives. It charges high fees and can lock up investor money for stretches at a time.
- Herd Mentality
Herd mentality is the tendency to do what other people are visibly doing rather than what your own information suggests. The economics of it is more unsettling than the folk version, because following the crowd can be the individually rational move and still produce a collectively wrong answer.
- Hindsight Bias
Hindsight bias is the tendency, once an outcome is known, to believe it was predictable all along, which quietly rewrites your memory of what you actually expected beforehand.
- Home Country Bias
Home country bias is the tendency of investors to hold far more of their own country's stocks than that country's share of the global market would suggest. It is one of the most consistently observed patterns in how people build portfolios.
- Hot Wallet
A hot wallet is a crypto wallet that is connected to the internet, such as an exchange account, phone app, or browser extension. The connection makes it convenient to use and, for the same reason, more exposed to theft.
- House Flipping
House flipping is buying residential property to resell it quickly, usually after repairs, at a profit. Federal tax law has no category called flipping. It has one question, whether the property is held primarily for sale to customers in the ordinary course of a business, and the answer to that question decides four separate things at once.
- Housing Affordability
Housing affordability, as a published measure, is an index comparing what homes cost in an area against what households there earn. The two best-known United States versions both read 100 at the point they call affordable, and they get there by counting different incomes, different costs and different thresholds, so they can move apart.
- Housing Bubble
A housing bubble is a period in which home prices rise well beyond what local incomes, rents and building costs would justify, sustained largely by the expectation that they will keep rising. The term is applied after the fact, and the closest thing to a formal test, published by a Federal Reserve Bank, deliberately avoids calling its findings bubbles.
- Hyperinflation
Hyperinflation is inflation so rapid that money stops working as a store of value and people abandon it for goods or a foreign currency. The Federal Reserve Bank of St. Louis states that no precise number defines it, and the two reference points that do circulate are a research convention and an accounting indicator rather than official definitions.
I
- Idiosyncratic Risk
Idiosyncratic risk is the risk tied to one specific company or asset, such as a product recall, a scandal, or a fraud, as opposed to forces that move the whole market. It is the part of investment risk that diversification can largely remove.
- Illiquidity Premium
An illiquidity premium is the extra return an investor expects to earn for holding something that cannot be sold quickly at a fair price. It is a reward for accepting a restriction, and like any risk premium it is expected rather than promised.
- Impact Investing
Impact investing is investing made with the intention of generating a measurable, positive social or environmental impact alongside a financial return, and holding the investment accountable for both.
- Implied Volatility
Implied volatility is the amount of future price movement an option's own market price implies, obtained by running a pricing model backwards from that price. It is an output of what buyers and sellers are paying, not a measurement of what the underlying has already done, and it says nothing about direction.
- In-the-Money
In-the-money describes an option whose strike price sits on the profitable side of the underlying's current price, so exercising it right now would be worth something. Out-of-the-money is the opposite case and at-the-money is the equal one, and which is which runs in opposite directions for calls and puts.
- Income Inequality
Income inequality describes how unevenly income is distributed across households over a period, usually a year. In the United States it is measured chiefly by the Census Bureau, which publishes several different measures of it and, separately, computes them on more than one definition of income. The definition chosen changes the answer.
- Index Fund
An index fund is a mutual fund or ETF that holds the same securities as a market index, such as the S&P 500 or a total-market index, and aims to match the index's return at very low cost rather than beat it.
- Infinite Banking
Infinite banking is a branded strategy, not a product, that uses an overfunded whole life insurance policy as a personal source of financing: you build cash value, then borrow against it. It is marketed as "being your own bank," and its costs and slow start are the heart of the debate about it.
- Inflation
Inflation is the broad rise in prices over time, which is the same thing as a decline in what each dollar buys. Measured mainly by the Consumer Price Index, it is the reason a financial plan measured in today's dollars slowly stops meaning what it says.
- Inflation Risk
Inflation risk is the risk that inflation turns out different from what the market expected when you bought. The expected part is already priced into what you are paid, so the erosion that matters is the surprise rather than the average.
- Initial Coin Offering (ICO)
An initial coin offering is a sale of newly created crypto assets by their issuer to the public, to raise money. Whether the sale is a securities offering depends on how it was marketed, and the answer decides what disclosure the buyer was entitled to.
- Initial Public Offering (IPO)
An initial public offering is the first sale of a company's shares to the public. It is a primary sale, so the money raised goes to the company or to shareholders selling alongside it, and the shares offered at the offering price are allocated by the underwriters rather than sold to whoever asks first.
- Insider Trading
Insider trading is buying or selling a security while aware of material nonpublic information, in breach of a duty of trust or confidence owed to the source of that information. No statute defines it, and the SEC's own rules say the law is otherwise defined by judicial opinions construing Rule 10b-5.
- Institutional Investor
An institutional investor is an entity, or in one case a person, that regulators treat as able to look after itself in the securities markets, so the disclosure and supervision rules written for individuals do not apply to dealings with it. FINRA defines the term affirmatively and defines the retail investor as everyone else.
- Interest Rate Cuts
An interest rate cut is a reduction in the central bank's target for its benchmark short-term rate, made to make borrowing cheaper and support a slowing economy. Its effects reach almost every loan and savings account you hold.
- Interest Rate Hikes
An interest rate hike is an increase in the central bank's target for its benchmark short-term rate, made to slow borrowing and cool inflation. It makes debt more expensive and safe savings more rewarding.
- Interest Rate Risk
Interest rate risk is the risk that a change in interest rates makes you worse off. For someone holding a fixed payment it shows up as a fall in the value of what they hold; for someone owing a floating payment it shows up as a larger bill.
- Internal Rate of Return (IRR)
The internal rate of return is the single discount rate that makes an investment's net present value exactly zero. It expresses a whole stream of cash flows as one annual percentage, and it has to be solved for rather than calculated directly.
- International Stocks
International stocks are shares in companies based outside the United States. The SEC gives two reasons investors hold them, diversification and growth, and lists nine specific risks that come with them, several of which have nothing to do with how the businesses perform.
- Interval Fund
An interval fund is a registered closed-end fund that offers to buy back a limited slice of its own shares at net asset value every three, six or twelve months, and generally does not trade on an exchange. The structure lets it hold illiquid assets, at the cost of the holder's ability to sell on demand.
- Intraday Margin Requirements
Intraday margin requirements are FINRA's rules on how much equity a customer must keep in a margin account against the exposure the account carries during the trading day, rather than only at the close. They replaced the day trading margin requirements, including the pattern day trader designation and its $25,000 minimum equity floor.
- Inverse ETF
An inverse ETF is an exchange-traded fund built to deliver the opposite of an index's return, commonly −1x or −2x, on a single trading day. It resets that target daily, so it can be used as a short-term hedge, but it shares the same compounding drift over longer holding periods as a leveraged ETF.
- Inverted Yield Curve
A yield curve is inverted when longer-dated debt yields less than shorter dated debt, which is the reverse of the usual arrangement. It is studied because inversions have generally preceded US recessions, and the Federal Reserve Bank of New York publishes a model built on exactly that relationship.
- Investment Company Act of 1940
The Investment Company Act of 1940 is the federal law governing pooled investment vehicles that offer their own securities to the public, including mutual funds, closed-end funds and most exchange-traded funds. It sets how they must be organized, valued, governed and financed, and it is what people mean by a "1940 Act fund".
- Investment Policy Statement (IPS)
An investment policy statement is a written document that spells out how your money will be invested: your goals, target asset allocation, rebalancing rules, and the conditions under which anything changes.
- IPO Lockup Expiration
An IPO lockup expiration is the date on which company insiders and early investors, who agreed not to sell their shares for a set period after an initial public offering, are first allowed to sell. Most lockups run 180 days, the date is disclosed in the prospectus, and the SEC warns that a stock's price may fall in anticipation of the shares that become sellable when it arrives.
J
L
- Labor Force Participation Rate (LFPR)
The labor force participation rate is the share of the population aged 16 and over that is either working or looking for work. Because its denominator has no upper age limit, the headline figure moves with the age structure of the population before it moves with anything happening in the job market.
- Land Banking
Land banking, in its investment sense, is buying a small plot carved out of a larger piece of undeveloped land on the expectation that it will be worth much more once the land is rezoned or built on. The value depends on a planning decision that no seller controls and that may never come.
- Large-Cap Stock
A large-cap stock is a share in one of the largest companies in the market by market capitalization. The band has no fixed boundary, and the practical point for most investors is that a broad cap-weighted fund is already mostly made of these companies, so adding a large-cap fund adds far less than it appears to.
- Layer-2 Blockchain
A layer-2 blockchain is a separate network that runs on top of an existing blockchain, executing transactions on its own record and settling the results back to the network beneath it. The purpose of the arrangement is lower cost and more capacity; the consequence for a holder is that the asset now sits on a second network with its own software and its own operators.
- Lazy Portfolio
A lazy portfolio is a small set of broad, low-cost funds held at fixed target weights and rebalanced on a schedule, with no forecasting and no security selection. The name describes how much maintenance it needs, not how much risk it carries.
- Leading Economic Indicators
Leading economic indicators are data series that tend to turn before overall economic activity does, so they are read as early evidence about where the economy is heading. They are one of three branches of business-cycle indicators, alongside coincident indicators, which move with the economy, and lagging indicators, which turn after it.
- Leverage (Investing)
Leverage in investing means holding more exposure than the money committed, with the difference borrowed. It multiplies the percentage result in both directions, but it does not treat the two directions equally, because a large enough loss ends the position instead of reversing later.
- Leveraged ETF
A leveraged ETF is an exchange-traded fund built to deliver a multiple, commonly 2x or 3x, of an index's return on a single trading day. Because it resets that target daily, its return over any longer period can differ sharply, and unpredictably, from the same multiple of the index's own longer-period return.
- Life Insurance as an Investment
Using life insurance as an investment means buying a permanent policy with a cash value component partly for its tax-advantaged savings rather than only for the death benefit. Whether it makes sense turns on cost, and for most people the comparison is against buying term insurance and investing the difference.
- Limit Order
A limit order is an instruction to buy or sell a security at a specified price or better. It controls the price you pay or receive and gives up the certainty that the trade happens at all.
- Liquidity
Liquidity is how quickly and easily an asset can be converted to spendable cash without losing value in the process. Cash is perfectly liquid; a house is not.
- Liquidity Risk
Liquidity risk is the risk of not being able to turn something into cash at a fair price when you need to. The phrase also has a narrower federal meaning for mutual funds, where it names the risk that a fund cannot meet redemption requests without diluting the investors who stay.
- Loss Aversion
Loss aversion is the finding that a loss of a given size hurts more than a gain of the same size feels good. Experimental estimates put the ratio at roughly two to one, which is enough to make people decline sensible risks and hold on to investments they would never buy again.
M
- Margin Account
A margin account is a brokerage account in which the firm lends the investor money to buy securities, using the account itself as collateral. It increases what can be bought and it magnifies losses, and three of its consequences are set by the lender rather than chosen by the borrower.
- Margin Call
A margin call is a brokerage firm's demand that an investor add cash or securities to a margin account after its equity falls below the required minimum. The firm can also simply sell holdings to cover the shortfall itself, without asking first and without waiting for any deadline it may have given.
- Market Capitalization
Market capitalization is the share price multiplied by the number of shares outstanding, and it is the standard measure of a company's size in the stock market. It is not the share price, which says nothing about size, and it is not the figure most stock indexes actually weight by, which counts only the shares available to investors.
- Market Cycle
A market cycle is the recurring pattern by which asset prices move through phases of rising and falling over time, commonly described as expansion, peak, contraction, and trough, driven by fundamentals and by swings in investor sentiment.
- Market Discount
Market discount is the amount by which a bond's stated redemption price at maturity exceeds what a buyer paid for it in the secondary market. The tax law treats that discount as interest in disguise, so the gain it produces is generally ordinary income rather than capital gain.
- Market Maker
A market maker is a dealer that stands ready to both buy and sell a security for its own account on a regular or continuous basis. The statutory definition turns on that two-sided, continuous willingness to deal, which is what separates a market maker from any other buyer or seller.
- Market Order
A market order is an instruction to buy or sell immediately at whatever price is available. It is also the default, so an investor who has never considered order types has been placing market orders without choosing to.
- Market Risk
Market risk is the part of investment risk that survives diversification: the chance that broad conditions push nearly everything down at once. It is managed by choosing an asset mix and a time horizon, not by owning more holdings.
- Market Timing
Market timing usually means trying to be invested at good moments and out of the market at bad ones, which requires being right twice rather than once. The same phrase has a second, regulatory meaning in fund documents, where it describes rapid trading of fund shares and the policies written to stop it.
- Master Limited Partnership (MLP)
A master limited partnership is a partnership whose units trade on a stock exchange, which keeps partnership tax treatment only because nearly all of its income comes from a narrow list of qualifying sources. Investors receive a Schedule K-1 rather than a 1099, and the tax paperwork is the real cost of admission.
- Median Home Price
The median home price is the middle price in a set of home sales: half sold for more, half for less. It is a statistic about which homes sold, not a measure of what any particular home is worth, and it moves when the mix of homes sold changes as well as when prices do.
- Median Household Income
Median household income is the income level at which half of all households earn more and half earn less. Published annually by the U.S. Census Bureau, it is a common benchmark for the "typical" household, and it differs from the average because a small number of very high incomes pull the average up.
- Memecoin
A memecoin is a cryptocurrency created around an internet joke, mascot, or community rather than around any product or use. Its price is driven almost entirely by attention and speculation, which makes it among the most volatile and manipulation-prone corners of the crypto market.
- Microfinance
Microfinance is the practice of supplying very small loans, and often savings, insurance and payment services, to households and businesses that conventional banks will not serve. Its defining problem is that the cost of making a loan does not shrink in proportion to the size of the loan.
- Mid-Cap Stock
A mid-cap stock is a company in the middle market-capitalization band, between small-cap and large-cap. The dividing lines are industry conventions set by index providers, not fixed legal thresholds.
- Modern Portfolio Theory (MPT)
Modern portfolio theory is the framework, introduced by Harry Markowitz in 1952, showing that an investment should be judged by its effect on a whole portfolio's risk and return, not on its own, and that combining assets that do not move together improves the tradeoff.
- Monetary Policy
Monetary policy is the set of actions a central bank takes to manage the supply of money and the cost of credit in order to meet its goals, chiefly stable prices and full employment. In the United States it is run by the Federal Reserve.
- Money Market Fund
A money market fund is a mutual fund that invests in short-term debt. It is a security, not a bank deposit, so it is not FDIC-insured and you can lose money in it. The money market account with the near-identical name is a bank deposit and is insured, and the two are frequently sold on the same screen.
- Money Supply
The money supply is the total stock of money held outside the banking system and available to be spent, measured by the Federal Reserve in two published aggregates, M1 and M2. The Fed's statistical release that carries the data is titled "Money Stock Measures," so the reader-facing name and the release name are different.
- Money-Weighted Return (MWR)
A money-weighted return measures what an investor's own money actually earned, counting the size and timing of every deposit and withdrawal. It is the number that answers "how did I do?", and it is usually not the number a fund publishes.
- Moral Hazard
Moral hazard is the change in behavior that follows from being protected against a cost. It is used in two related but different senses: insurance regulators use it for traits in an insured that raise the chance of a loss, while economists use it for the incentive effect of the coverage itself.
- Morningstar Rating
The Morningstar Rating is a one-to-five-star score assigned to a fund based on its past risk-adjusted return compared with other funds in the same Morningstar category. The stars are allocated on a fixed curve, so they rank funds rather than grade them.
- Municipal Bond
A municipal bond is a debt security issued by a state, a local government or one of their agencies. Interest on it is generally excluded from federal gross income, and the exclusion has four holes worth knowing before buying one.
- Mutual Fund
A mutual fund is an SEC-registered investment company that pools money from many investors and buys a portfolio of securities with it. Its defining legal feature is redeemability: the fund itself stands ready to buy your shares back, at a price computed once a day.
N
- Nasdaq
Nasdaq refers to two related things: an electronic U.S. stock exchange and a family of stock indexes named after it. The exchange is where shares trade; the indexes measure the performance of stocks listed there.
- National Debt
The national debt is the total amount the federal government owes, built up from years of borrowing to cover budget deficits. It is a running total, not a single year's shortfall, and the Treasury reports it daily.
- Net Asset Value (NAV)
Net asset value is a fund's total assets minus its total liabilities, and net asset value per share is that figure divided by the shares outstanding. It is a computed value rather than a quoted price, and for anything the fund holds that does not trade actively, part of it is an estimate made in good faith by the board.
- Net Investment Income Tax (NIIT)
The net investment income tax is a 3.8% tax on investment income for households above a fixed income threshold. It applies to the lesser of your net investment income or the amount by which your modified adjusted gross income exceeds the threshold, so a household just over the line usually owes it on very little.
- Net Present Value (NPV)
Net present value is what an investment or purchase is worth today after its cost is subtracted from the discounted value of what it will produce. A positive figure means the money coming in outweighs the money going out at the rate used to compare them.
- No-Load Fund
A no-load fund is a mutual fund that charges no sales load, meaning nothing is taken off the top when you buy or off the proceeds when you sell. It does not mean the fund is free: annual operating expenses still apply, and several shareholder fees are not sales loads.
- Nominal Return
A nominal return is an investment's stated percentage gain or loss in plain dollars, before adjusting for inflation, taxes, or fees: the number quoted on statements, in ads, and in headlines.
- Non-Fungible Token (NFT)
A non-fungible token (NFT) is a unique, one-of-a-kind entry recorded on a blockchain that represents ownership of a specific digital or physical item, as opposed to ordinary cryptocurrency, where every unit is interchangeable.
- Non-Traded REIT
A non-traded REIT is a real estate investment trust that is registered with the SEC and sold through brokers but does not trade on a stock exchange. It shares the tax structure of a listed REIT but carries higher fees, limited ability to sell, and prices set by periodic estimate rather than a live market.
O
- Odd Lot
An odd lot is an order to buy or sell a stock in an amount smaller than that stock's round lot, the standard trading unit assigned to it under Regulation NMS. The familiar answer, fewer than 100 shares, has been wrong for higher-priced stocks since November 3, 2025, when the round lot became a price-tiered quantity.
- Opportunity Cost
Opportunity cost is the value of the best alternative you give up when you choose one use of your money, time, or effort over another. Every financial decision has one, whether or not it appears on any statement.
- Options Assignment
Assignment is what happens to the seller of an options contract when the buyer exercises: the seller receives a notice and must perform, buying or selling the underlying at the strike price. The writer does not choose whether or when it happens, and which customer gets assigned is decided by a method the brokerage firm has filed in advance.
- Options Contract
An options contract gives its buyer the right, but not the obligation, to buy or sell a security at a fixed price within a set period. The seller of the same contract holds the matching obligation, which is where the risk actually sits.
- Options Expiration
Options expiration is the point at which an options contract ceases to exist. Standard monthly equity and index options expire on the third Friday of the expiration month, contracts that are in the money by enough are exercised automatically unless the holder says otherwise, and on standardized equity options the holder's final decision is due at 5:30 p.m. Eastern Time on the day of expiration.
- Order Book
An order book is a trading venue's ranked list of the orders and quotations resting on it, sorted by price and then by time. The version the public sees is a processed summary of it: sizes are rounded down and small orders are bundled, so the displayed picture is not the book.
- Ordinary Dividend
An ordinary dividend is a dividend taxed at your regular income tax rates rather than the lower rates for qualified dividends. On Form 1099-DIV, Box 1a "total ordinary dividends" is the gross figure and includes the qualified portion shown in Box 1b.
- Original Issue Discount (OID)
Original issue discount is the amount by which a debt instrument's stated redemption price at maturity exceeds its issue price. The tax law treats that gap as interest and, for most instruments, requires the holder to report it as it accrues each year rather than when it is paid.
- Over-the-Counter Market
The over-the-counter market is where securities that are not listed on a stock exchange are quoted and traded through a network of dealers rather than on a central venue. It is regulated, chiefly through SEC Rule 15c2-11's requirement that a dealer quoting a security have current public information about the issuer, but how much is known about an OTC company varies far more than it does for a listed one.
- Overconfidence Bias
Overconfidence bias is the tendency to trust your own judgment more than the evidence supports. It is not one effect but three separable ones, and the one that decides how much of something you buy is the least discussed of the three.
P
- Panic Selling
Panic selling is selling investments because their prices are falling rather than because anything in the plan changed. It is an action rather than a bias, and the expensive half of it is not the sale but the decision about when to buy back.
- Paper Savings Bond
A paper savings bond is a Series EE or Series I savings bond issued as a physical certificate rather than as an entry in a TreasuryDirect account. Paper is a legacy form that Treasury no longer sells, and a paper bond is never paid automatically: nothing happens until the holder presents it.
- Passive Investing
Passive investing is an approach in which the investor declines to bet on which securities will do well or on when to be in the market, and instead holds broad, rules-based holdings and keeps holding them. It describes the investor's behavior rather than the product, which is why a portfolio built entirely from index funds can still be run actively.
- Payment for Order Flow (PFOF)
Payment for order flow is money a brokerage receives for sending its customers' orders to a particular trading firm to be executed. It is legal in the United States, it must be disclosed, and it is the main reason a broker can charge no commission and still make money on stock trades.
- Peer-to-Peer Lending
Peer-to-peer lending is an arrangement in which individuals lend money to other individuals or small businesses through an online platform, in exchange for interest. For the lender it is an investment whose return depends on borrowers repaying, and it carries no deposit insurance.
- Penny Stock
A penny stock is a low-priced, speculative security, generally one trading under $5 a share, that trades with little liquidity and limited public information, which is why the category attracts fraud.
- Performance Chasing
Performance chasing is buying an investment because of how well it has recently done and selling one because of how badly it has, so recent returns become the forecast rather than merely the record.
- Personal Consumption Expenditures Price Index
The Personal Consumption Expenditures Price Index is the Bureau of Economic Analysis measure of prices paid by, and on behalf of, people living in the United States. It is the index the Federal Reserve's inflation goal is written on, and its readings are revised after publication.
- PFIC (PFIC)
A PFIC is a foreign corporation that is mostly passive, meaning most of its income or assets are investment-related. For a US investor it triggers a punitive tax regime, which is why owning a foreign mutual fund or ETF is a costly trap for Americans abroad.
- Pig Butchering Scam
A pig butchering scam is a long-running fraud in which a stranger builds a relationship over weeks or months and then steers the target onto an investment platform the scammer controls, where the displayed gains are fabricated. Federal agencies also describe it as cryptocurrency investment fraud.
- Ponzi Scheme
A Ponzi scheme is an investment fraud in which the returns paid to existing investors come from money contributed by new ones rather than from any real profit. The account statements are not optimistic, they are invented, which is what distinguishes it from a bad investment.
- Portfolio
A portfolio is the combined set of investments someone holds, taken together rather than account by account. The SEC defines it as the combined holdings of stock, bond, commodity, real estate and other investments by an individual or institutional investor.
- Portfolio Margin
Portfolio margin is a risk-based alternative to ordinary margin, in which a brokerage firm sets the requirement on a whole group of related positions by the worst loss a model projects across a range of market moves, rather than position by position. It can require far less collateral than ordinary margin and it can demand far more, quickly, when the model's view of risk changes.
- Precious Metals IRA
A precious metals IRA is a self-directed IRA that holds physical gold, silver, platinum, or palladium under a narrow exception in the tax code. The metal must meet purity standards and be held by an approved trustee or depository, never at home.
- Preferred Stock
Preferred stock is a class of equity that pays a fixed dividend and ranks ahead of common stock for dividends and in liquidation, but usually carries no voting rights, making it a hybrid of a stock and a bond.
- Premium or Discount to NAV
A premium or discount to NAV is the gap between what a fund's shares trade for and what the fund's holdings are worth per share, stated as a percentage of net asset value. A positive gap is a premium and a negative one is a discount; federal rules make it one signed measurement rather than two.
- Price Return
Price return is the change in an investment's price alone, leaving out any dividends or interest it paid along the way. It is the number a simple price chart shows, and for anything that pays income it understates what the investment actually produced.
- Price Target
A price target is the price a research analyst expects a security to reach. FINRA rules require it to have a reasonable basis and to come with the valuation method and the risks to achieving it, and where a firm has carried a target for a year the report must also show the price chart alongside every target the firm has set.
- Price-to-Earnings Ratio
The price-to-earnings ratio is a company's share price divided by its earnings per share, so it reports how many dollars a buyer is paying for each dollar of annual profit. It is a comparison tool rather than a verdict, and it is silent about the companies whose valuation is most argued over.
- Prime Money Market Fund
A prime money market fund is a money market fund that holds private-sector short-term debt, such as commercial paper and bank CDs, rather than only government securities. That extra credit is why it usually yields a little more, and why the 2008 crisis reforms were aimed squarely at it.
- Prime Rate
The prime rate is the reference interest rate large banks use as a base for pricing short-term loans to their most creditworthy borrowers. It moves in step with the Federal Reserve's benchmark rate and sets the floor under many variable consumer loans.
- Private Activity Bond
A private activity bond is a state or local government bond whose proceeds mostly benefit or are repaid by a private party rather than the government itself. Its interest is taxable unless the bond fits one of the qualified categories in the tax code, and even then it may count toward the alternative minimum tax.
- Private Credit
Private credit is lending to companies by non-bank investors, usually through funds, instead of by banks or the public bond market. Investors earn interest in exchange for taking on illiquidity and the risk that borrowers default.
- Private Equity (PE)
Private equity is the business of buying ownership stakes in companies that are not publicly traded, usually through funds that acquire whole mature companies, improve them over several years, and sell them at a profit. Investors commit capital for a decade and cannot easily get it back.
- Private Key
A private key is the secret cryptographic code that authorizes spending cryptocurrency from an address. Whoever holds the private key controls the coins, which is why keeping it secret is the whole of crypto security.
- Private Placement
A private placement is a sale of securities that skips SEC registration because it does not involve a public offering. Almost all are done under Rule 506 of Regulation D, which lets an issuer raise an unlimited amount from accredited investors with no SEC review of the deal.
- Program-Related Investment (PRI)
A program-related investment is a loan, guarantee, or equity stake a private foundation makes primarily to advance its charitable purpose rather than to earn a return. It is the statutory exception that keeps a deliberately uncommercial investment from being taxed as one that jeopardizes the foundation's exempt purpose.
- Prohibited Transaction
A prohibited transaction is a dealing between a retirement account or plan and someone too close to it, which the law bars regardless of whether the terms were fair. Two statutes carry the rule, and the penalty is completely different depending on which account is involved.
- Prospect Theory
Prospect theory is the model of how people actually decide under risk: they judge outcomes as gains and losses from a reference point rather than as final wealth, feel losses more sharply than equivalent gains, and misweight probabilities.
- Prospectus
A prospectus is the disclosure document an issuer must deliver when it offers a security for sale. In everyday use it means the fund booklet describing objectives, risks, costs and performance, but the legal definition is far wider and reaches notices, circulars, advertisements and letters.
- Proxy Voting
Proxy voting is voting shares you own without attending the meeting, by authorizing someone else to cast the vote as you direct. For almost every retail investor it is the only way their shares are ever voted, because the shares are held in the broker's name rather than their own.
- Pump and Dump Scheme
A pump and dump scheme is stock manipulation in which promoters spread false or misleading information to drive a share price up, then sell their own shares into the demand they created. The fraud is complete at the moment they sell, which is why being right about the company's story is irrelevant.
- Purchasing Power
Purchasing power is how much a unit of money can actually buy. It falls over time as inflation raises prices, and it differs from place to place, which is why the same salary stretches further in a low-cost city than a high-cost one.
- Put Option
A put option is an options contract that gives its buyer the right, but not the obligation, to sell the underlying security at a fixed strike price on or before expiration. The seller, or writer, of that same contract takes on the matching obligation to buy if the buyer exercises.
Q
- Qualified Default Investment Alternative (QDIA)
A qualified default investment alternative, or QDIA, is the investment a workplace retirement plan puts contributions into when the participant never chooses. Meeting the federal QDIA rules shifts responsibility for the resulting investment outcome from the plan's fiduciaries to the participant. It does not make the investment a good one.
- Qualified Dividend
A qualified dividend is a dividend that is taxed at long-term capital gains rates instead of ordinary income rates. What makes one qualified is the payer and a holding period, and the statute achieves the lower rate not by writing a separate rate table but by folding the dividend into your net capital gain.
- Qualified Opportunity Fund (QOF)
A qualified opportunity fund is the corporation or partnership through which capital gains are reinvested to obtain the opportunity zone tax benefits. Nobody approves one: the fund certifies itself on its own tax return, and it then has to keep passing a 90 percent asset test or pay a monthly penalty.
- Qualified Opportunity Zone (QOZ)
A qualified opportunity zone is a low-income census tract designated under the tax code so that capital gains reinvested in a fund operating there receive deferral and, after a long enough holding period, an exclusion of the fund investment's own appreciation. The program was made permanent in 2025 on a ten-year designation cycle, and the rules for money invested from 2027 onward differ from the rules for money already in.
- Qualified Purchaser
A qualified purchaser is a person who meets a high investment-holdings threshold under the Investment Company Act, most commonly $5 million in investments, which is what allows a private fund to admit an unlimited number of investors. Confusingly, the same phrase means something completely different in Regulation A.
- Quantitative Easing (QE)
Quantitative easing is a central bank buying large quantities of longer-term bonds in order to push long-term interest rates down, used when its usual tool of cutting the short-term rate has run out of room. The Federal Reserve's own name for it is large-scale asset purchases.
R
- R-Squared
R-squared is the share of one thing's variation that is accounted for by another. In investing it usually reports how much of a fund's return movement is explained by its benchmark index, on a scale from 0 to 1, and a high reading says the two move together, not that either one is any good.
- Real Estate Crowdfunding
Real estate crowdfunding is the market name for buying an interest in property or property debt through an online platform. It names a distribution channel rather than a type of investment, and the same phrase covers at least three different legal structures with different rules.
- Real Estate Investment Trust (REIT)
A real estate investment trust is a company that owns or finances income-producing property and, in exchange for meeting a set of statutory tests, pays no corporate tax on the income it distributes. The requirement to distribute is what makes the yield high and the tax treatment awkward.
- Real Estate Syndication
A real estate syndication is a private arrangement in which a sponsor forms a company to buy and operate a specific property and sells passive ownership interests in that company to investors. What the investor buys is an interest in the entity, which is generally a security, rather than any direct interest in the building.
- Real Rate of Return
The real rate of return is an investment's return after subtracting inflation: the growth in what your money can actually buy, rather than the growth in the account balance.
- Real Wages
Real wages are pay adjusted for prices, so that a change in the number means a change in what the pay can buy. The adjustment requires choosing a price index, and because different institutions choose different ones, two correct real-wage figures for the same period can differ.
- Real Yield
A real yield is a bond's yield after inflation is removed, so it measures purchasing power rather than dollars. On Treasury Inflation-Protected Securities it is the number actually quoted, because the principal already adjusts with the Consumer Price Index.
- Realized Gain
A realized gain is the profit locked in the moment you sell or exchange an asset for more than its adjusted basis. Selling is what turns a paper profit into a realized one, and realization is the event federal tax law generally requires before any gain is taxed.
- Rebalancing
Rebalancing is periodically restoring a portfolio to its target asset allocation, selling what has grown beyond its target and buying what has shrunk, so market moves don't gradually change how much risk you hold.
- Recency Bias
Recency bias is the tendency to give the most recent stretch of experience disproportionate weight when forecasting, so expectations end up extrapolating whatever just happened.
- Recession
A recession is a significant decline in economic activity that is spread across the economy and lasts more than a few months. In the United States the start and end dates are set retrospectively by the National Bureau of Economic Research, a private nonprofit, and the announcement typically arrives many months after the turning point it names.
- Regulation A Offering
A Regulation A offering is a public sale of securities that is exempt from full SEC registration, up to $20 million a year under Tier 1 or $75 million under Tier 2. Anyone may invest, the SEC qualifies the offering statement rather than approving the deal, and the shares are not restricted securities.
- Regulation T
Regulation T is the Federal Reserve Board's rule governing how much credit a broker-dealer may extend to a customer buying securities, and how quickly a customer must pay for a purchase. It sets initial margin and the cash-account payment period, and its figures are floors that exchanges, FINRA and the firm itself may raise.
- Reinsurance
Reinsurance is insurance bought by an insurance company from another insurance company. The policyholder is not a party to it and keeps dealing with the insurer that issued the policy; what reinsurance changes is the issuing insurer's balance sheet.
- Reinvestment Risk
Reinvestment risk is the risk that when a bond's coupons or its principal are returned to you, prevailing interest rates are lower, so the money can only be put back to work at a worse rate than the original investment earned.
- Rent Control
Rent control is a law limiting what a landlord may charge or how much the rent may rise for covered housing. In New York, where the oldest such program runs, the phrase names the narrower of two schemes, and the umbrella term is rent regulation.
- Rental Property
A rental property is a dwelling unit held to produce rental income rather than to live in. Federal tax law decides which one it is by counting days of personal use, and the answer changes which deductions exist at all.
- Reserve Currency
A reserve currency is a currency that central banks and finance ministries hold in their official foreign exchange reserves, and that the rest of the world uses to invoice trade, borrow, and settle payments. The U.S. dollar has been the dominant one since the Second World War.
- Retail Investor
A retail investor is an individual who invests their own money for personal accounts, as opposed to an institutional investor that manages large pools of money professionally.
- Retirement Savings Gap
A retirement savings gap is the shortfall between what someone has actually saved for retirement and what they would need to fund the retirement they're planning for.
- Revenue Bond
A revenue bond is a municipal bond repaid only from a specified stream of revenue, such as tolls, water charges or airport fees, rather than from the issuer's taxing power. If the pledged revenue falls short, there is no general tax base behind the bond.
- Reverse Stock Split
A reverse stock split combines several existing shares into one, raising the price per share by the same ratio without changing what the company is worth or what each holder owns. It is most often used to lift a low share price back above an exchange's minimum, and since 2025 both major exchanges refuse a cure period to a company that has already used one recently.
- Rights Offering
A rights offering is a way for a company to raise cash by giving its existing shareholders the right to buy additional shares, in proportion to what they already hold, at a set price and by a set deadline. Shareholders who exercise keep their percentage of the company; those who do not are diluted, and the rights themselves usually have a value that can be sold or lost.
- Risk Capacity
Risk capacity is your financial ability to absorb investment losses without derailing your goals: determined by your time horizon, income stability, and resources, not your feelings.
- Risk Pooling
Risk pooling is combining many independent exposures so that the group's total loss becomes predictable even though no individual loss is. It is what lets an insurer promise more than it could ever pay all at once, and it stops working when the exposures are not independent.
- Risk Premium
A risk premium is the extra return an investor expects, above the return on a risk-free asset, for agreeing to hold something whose outcome is uncertain. It is a reward that is expected rather than promised.
- Risk Tolerance
Risk tolerance is your emotional and psychological willingness to accept investment losses and uncertainty in exchange for the chance of higher returns.
- Risk-Free Rate
The risk-free rate is the return assumed on an asset whose payment is treated as certain, used as the baseline against which risky returns are measured. In U.S. practice the proxy is a Treasury security, which is default-free rather than risk-free, and the difference is not a quibble: a default-free asset can still lose a saver purchasing power.
- Robo-Advisor
A robo-advisor is an online service that builds and manages a diversified investment portfolio automatically using algorithms: typically for a much lower fee than a human asset manager, and typically without personalized financial planning.
- Royalty Income
Royalty income is what you are paid for someone else's right to use property you own, such as a mineral interest, a patent, a copyright, or your name and likeness. Whether it is taxed as business income or as investment income turns on a single question, and that question decides whether self-employment tax applies.
- Rug Pull
A rug pull is a crypto scam in which the creators of a token or project raise money from investors and then abandon it or drain its funds, leaving buyers with a worthless asset and no recourse.
- Rule 10b5-1 Plan
A Rule 10b5-1 plan is a written trading arrangement adopted in advance, while the person holds no inside information, which then executes automatically. It is how an employee or executive with company stock sells on a schedule without each sale looking like a decision.
- Rule of 72
The Rule of 72 is a mental-math shortcut for estimating how long it takes money to double: divide 72 by the annual rate of return, and the result is the approximate number of years.
S
- S&P 500
The S&P 500 is a float-adjusted, capitalization-weighted index of 500 large U.S. companies, published by S&P Dow Jones Indices. Its constituents are chosen by a committee rather than ranked mechanically, and the headline number quoted in the news excludes dividends.
- Sales Load
A sales load is a one-time charge paid when you buy or redeem mutual fund shares, similar to a commission. The Investment Company Act defines it as the gap between what you pay and what the fund actually receives and invests, so it is best understood as the part of your money that never reaches the portfolio.
- Schedule D (Form 1040)
Schedule D is the attachment to Form 1040 that nets a year's capital gains and losses into one figure. Its official title is "Capital Gains and Losses", and the rate that figure is taxed at is computed on a worksheet in the instructions rather than anywhere on the schedule itself.
- Secondary Market
The secondary market is where investors buy and sell securities from one another after they have been issued. The company that issued the security is not involved and gets none of the money; it is a trade between two investors.
- Sector Fund
A sector fund is a mutual fund or ETF that concentrates its holdings in one industry, such as technology, energy, or health care, rather than spreading across the whole market. It trades the diversification of a broad fund for a targeted bet on how one part of the economy performs.
- Secured Overnight Financing Rate (SOFR)
The Secured Overnight Financing Rate is the benchmark that replaced US dollar LIBOR as the reference rate under variable-rate loans and financial contracts. The New York Fed publishes it every business day from actual overnight borrowing secured by Treasury securities.
- Securities Act of 1933
The Securities Act of 1933 is the federal law governing the offer and sale of securities. It requires an offering to be registered with the SEC, and the registration statement to disclose prescribed information, unless an exemption applies. Its enforcement engine is a private right to sue over what the disclosure said.
- Securities Exchange Act of 1934
The Securities Exchange Act of 1934 is the federal law governing securities markets and the people in them. It created the SEC, requires exchanges and broker-dealers to register, and obliges public companies to keep reporting after their shares are sold, rather than only at the moment of sale.
- Securities Fraud
Securities fraud is deception in connection with the purchase, sale or offer of a security. It is a legal conclusion about conduct rather than the name of a particular scheme, which is why Ponzi schemes, pump and dump schemes and insider trading are all prosecuted under the same short antifraud provisions.
- Securities Investor Protection Corporation (SIPC)
The Securities Investor Protection Corporation (SIPC) is the nonprofit membership corporation Congress created to restore cash and securities to customers when a brokerage firm fails. It is not a government agency, not an insurer, and it does not respond to investments losing value.
- Securities Lending
Securities lending is a transaction in which the holder of a security transfers it to a borrower against collateral, with an obligation to return identical securities later. It exists mainly because a short sale cannot be placed unless the security has been borrowed or can reasonably be expected to be available for delivery.
- Security (Investment)
A security is a tradeable financial instrument that federal law brings under the securities statutes: stocks, bonds, fund shares, options and, through the catch-all category of the investment contract, a great many arrangements that do not look like any of those.
- Seed Phrase
A seed phrase is a list of ordinary words, usually 12 or 24, that a crypto wallet generates as a human-readable master backup. It can regenerate all of a wallet's keys, so anyone who has it can control the funds.
- Self-Directed IRA (SDIRA)
A self-directed IRA is a traditional or Roth IRA held at a custodian that lets you invest in assets beyond publicly traded securities, such as real estate, private companies, or precious metals. It follows the exact same tax rules as any IRA; only the range of permitted investments and the custodian differ.
- Seller's Market
A seller's market is a period in which buyers competing for a limited number of homes give sellers the stronger negotiating position, and a buyer's market is the reverse. Both are informal labels for one underlying balance, and the statistical agencies that publish the usual measure of that balance attach no label to any level of it.
- Separately Managed Account
A separately managed account is a portfolio of individually owned securities, managed on your behalf by a professional manager, rather than shares of a pooled fund. You directly own each stock or bond in the account, which is what makes tax and customization features possible that a mutual fund or ETF cannot offer.
- Sequence of Returns Risk
Sequence of returns risk is the danger that the order of investment returns, not just their average, damages a portfolio you're withdrawing from. Poor markets in the first years of retirement force you to sell more shares to fund the same spending, and the portfolio may never recover even if returns later improve.
- Series EE Savings Bond
A Series EE savings bond is a non-marketable U.S. Treasury savings bond that earns a fixed interest rate and carries a guarantee that its value will at least double if held for 20 years.
- Series I Savings Bond
A Series I savings bond is a US Treasury savings bond whose interest rate has two parts, a fixed rate set for the life of the bond and an inflation component that resets every six months. It is built to track inflation rather than be eroded by it, and its nominal value cannot fall.
- Settlement Date
The settlement date is the day ownership of a security and the cash that paid for it actually change hands, as distinct from the trade date, when the order was executed. Under the current standard cycle, settlement happens one business day after the trade.
- Share Buyback
A share buyback is a company using its cash to buy back its own shares, shrinking the share count. It is one of the two main ways a company returns cash to owners, the other being a dividend, and each remaining share ends up representing a larger slice of the company.
- Share Class
A share class is one of several versions of the same mutual fund, each holding the identical portfolio but charging fees in a different way. Which class is cheapest depends almost entirely on how long you hold and how you bought it.
- Shareholder Meeting
A shareholder meeting is the gathering at which a company's owners elect directors and vote on the matters put to them. The duty to hold one comes from state corporate law and stock exchange listing standards rather than from the federal securities laws, which regulate how the company asks for your vote.
- Sharpe Ratio
The Sharpe ratio measures how much return an investment earned above a risk-free asset for each unit of volatility it took on. A higher ratio means more reward for the risk.
- Short Selling
Short selling is selling a security you do not own, having borrowed it, in order to buy it back later at what you hope is a lower price. It creates four obligations that an ordinary purchase does not, and the loss it can produce has no arithmetic ceiling.
- Shrinkflation
Shrinkflation is when a product's package or portion gets smaller while its price stays the same, so the buyer pays the same money for less. It is a hidden form of inflation, because the unit price rises even though the sticker price does not.
- Silver Investing
Silver investing means holding silver for its price rather than for income, through the same routes as gold: bullion and coins, an exchange-traded product, futures, or mining shares. What makes silver behave differently is that about half of U.S. demand is industrial, so its price answers to the manufacturing cycle as well as to investment demand.
- Slippage
Slippage is the gap between the price an investor expected when the order was sent and the price at which it actually executed. The word itself appears nowhere in Regulation NMS, but the measurement does: Rule 605 makes brokers and trading venues publish monthly statistics on exactly this gap.
- Small-Cap Stock
A small-cap stock is a share in a company at the smaller end of the public market by market capitalization. There is no fixed boundary: FINRA says in terms that there are no fixed cutoff points, and index providers define their size segments by how much of a market they cover rather than by a dollar figure.
- Smart Contract
A smart contract is computer code stored on a blockchain that executes automatically when its conditions are met. The CFTC's own educational primer warns that the name may be an oxymoron: a smart contract is not necessarily smart, and it is not necessarily a legally binding contract.
- Social Security Solvency
Social Security solvency is the question of whether the program's income and trust-fund reserves will be enough to pay full scheduled benefits in the future, measured each year by the Social Security Trustees.
- Social Security Trust Fund
The Social Security trust funds are the two federal accounts, OASI and DI, that collect Social Security payroll taxes, hold the surplus in special Treasury securities, and pay out benefits.
- Socially Responsible Investing (SRI)
Socially responsible investing means excluding companies or industries that conflict with an investor's values, such as tobacco, weapons, or gambling, from a portfolio. It is the oldest and narrowest of a family of values-driven approaches that also includes ESG investing and impact investing, and the three are often confused with one another.
- Soft Landing
A soft landing is the outcome in which a central bank brings high inflation back down without causing a recession. It has been named as an objective in the Federal Reserve's own record, and there is no published test for whether one has happened.
- Sophisticated Investor
A sophisticated investor is a buyer in a private offering who does not meet the accredited investor thresholds but has enough knowledge and experience in financial and business matters to evaluate the deal. The category exists in one place in federal law, Rule 506(b), and it is capped at 35 such purchasers.
- Special Purpose Acquisition Company (SPAC)
A special purpose acquisition company is a shell company that raises money in an initial public offering with no business of its own, holds the cash in trust, and has a fixed period, usually two years, to merge with a private operating company, which thereby becomes public. If no deal closes, the cash goes back to shareholders; if one does, shareholders may take their share of the trust instead of staying in.
- Specific Share Identification
Specific share identification is choosing exactly which shares to sell out of a position built up over multiple purchases, instead of letting the default rule decide for you. It lets you control the size and character of the gain or loss a sale produces, but only if you make the identification before the trade settles.
- Sports Card Investing
Sports card investing is buying sports trading cards in the expectation of reselling them at a profit. What separates it from the rest of the collectibles market is measurement: independent graders assign a published numeric grade, seal the card in a holder, and publish how many examples exist at each grade.
- Spot Bitcoin ETP
A spot bitcoin ETP is an exchange-traded product that holds bitcoin itself and trades on a stock exchange like a share. The name in common use is spot bitcoin ETF, while the SEC's own approval order calls it an ETP, and the difference is which law the product is registered under and therefore which investor protections apply.
- Stable Value Fund
A stable value fund is a capital-preservation investment option offered inside many 401(k) plans that aims to hold a steady, non-fluctuating value while typically paying more than a money market fund.
- Stablecoin
A stablecoin is a cryptocurrency designed to hold a fixed value against a reference asset, almost always one U.S. dollar, so it can be used for payments and trading without the wild price swings of other crypto.
- Stagflation
Stagflation is the uncomfortable combination of a stagnant economy, high unemployment and weak growth, occurring at the same time as high inflation. It is difficult because the usual cures for one problem worsen the other.
- Staking
Staking is committing proof-of-stake cryptocurrency to help operate and secure a blockchain network, earning rewards in return. The rewards are taxable as ordinary income when you gain control of them.
- Standard Deviation
In investing, standard deviation measures how much an investment's returns have varied around their own average. It is the most common single number used to describe how risky, in the sense of how bouncy, an investment is.
- Standard of Living
Standard of living is the level of material comfort a person or household can sustain: the housing, food, healthcare, transportation, and leisure their income and wealth actually support.
- Stock
A stock is a security representing part ownership of a company. What the owner holds is a claim on the company's assets and earnings that ranks behind every creditor, which is why the return has no fixed ceiling and why the investment can also end at zero.
- Stock Screener
A stock screener is a tool that filters the universe of listed stocks down to the ones meeting criteria you set, such as a market value above a certain size, a price-to-earnings ratio below a certain level or a dividend yield above one. It produces a list to investigate, not a verdict, and the list is only as good as the definitions behind each number.
- Stock Split
A stock split multiplies the number of shares a company has and divides the price by the same factor, so your stake is worth exactly what it was a moment before. It changes the arithmetic of the share, not the value of the company.
- Stockbroker
A stockbroker is the everyday name for a licensed securities salesperson, formally a registered representative of a broker-dealer, who buys and sells investments for customers. The classic commission-per-trade stockbroker has largely given way to app-based trading and advice-branded roles.
- Stop-Loss Order
A stop-loss order tells your broker to sell a security once its price falls to a level you set, so a loss cannot run past it while you are not watching. It caps the trigger, not the sale price, so the actual exit can be worse than the stop.
- Strike Price
The strike price is the fixed price at which the holder of a stock option can buy the underlying shares. On employee stock options it is set at grant, and the rules that govern how it may be set are what separate a favorable option from a tax problem.
- Structured Products
A structured product is a security, usually a note issued by a bank, whose return is tied to the performance of an underlying asset such as a stock index, and shaped by features like caps, buffers, and barriers. The investor also takes on the credit risk of the issuing bank.
- Student Loan Payoff vs. Invest
Student loan payoff versus investing is the decision about whether to send extra money toward student debt or into investments. The general math compares the loan's interest rate with an expected investment return, but three student-loan-specific factors, an employer match, the interest deduction, and the risk of forgoing forgiveness, often decide it.
- Style Drift
Style drift is a fund coming to hold something materially different from what its name, stated objective and category imply, so an investor's actual asset allocation changes without the investor deciding anything.
- Supply and Demand
Supply and demand is the basic model of how prices form in a market: the quantity sellers offer and the quantity buyers want to buy adjust until they meet at an equilibrium price. It underlies the pricing of nearly everything, from groceries to stocks.
- Survivorship Bias
Survivorship bias is the error of drawing a conclusion from a group that has already been filtered by survival, so the failures are missing from the evidence and the survivors look better than the full population ever was.
- Swing Trading
Swing trading is a trading style that holds a position for roughly several days to a few weeks to capture an expected price swing, longer than a day trade and much shorter than a buy-and-hold position.
T
- Target-Date Fund (TDF)
A target-date fund is a single diversified fund named for a year (2045, 2060) that automatically becomes more conservative as that year approaches. It is designed to be an investor's entire portfolio, and it is the default investment in most workplace retirement plans.
- Tariff
A tariff is a tax a government charges on imported goods. It is paid to the government by the company importing the goods, not by the exporting country, and its cost is commonly passed along, in whole or in part, to consumers through higher prices.
- Tax Drag
Tax drag is the reduction in your long-run investment return caused by taxes paid along the way, on dividends, interest, and capital gains distributions, rather than only at the eventual sale. It is a cost that compounds year after year in a taxable account, in a way that does not apply to a tax-advantaged retirement account.
- Tax-Equivalent Yield
Tax-equivalent yield is the pre-tax yield a taxable bond would have to pay to leave an investor with the same after-tax income as a given tax-exempt bond. It is the tax-exempt yield divided by one minus the investor's marginal tax rate.
- Tax-Exempt Income
Tax-exempt income is income that federal law excludes from gross income altogether, so it never enters the tax calculation. Municipal bond interest, gifts and inheritances, and most life insurance death benefits are the familiar examples.
- Tax-Gain Harvesting
Tax-gain harvesting is deliberately selling an appreciated investment in a taxable account during a low-income year to realize the gain at a low or zero rate, then usually buying it straight back. The point is not the sale but the higher cost basis it leaves behind.
- Tax-Loss Harvesting (TLH)
Tax-loss harvesting (TLH) is selling an investment in a taxable account for less than you paid to capture the loss for tax purposes, then reinvesting in a similar (but not substantially identical) holding so you stay invested.
- Technical Analysis
Technical analysis is the practice of studying a security's own past price and trading volume, mainly through charts, to try to time when to buy or sell it, rather than studying the business behind it.
- Thematic ETF
A thematic ETF is an exchange-traded fund built around a trend or idea, such as artificial intelligence, robotics, or clean energy, rather than a traditional industry classification. It buys companies believed to benefit from the theme wherever they sit in the economy, which can mean crossing several conventional sectors to do it.
- Three-Fund Portfolio
A three-fund portfolio holds a total US stock fund, a total international stock fund and a total US bond fund, and nothing else. The name comes from the Bogleheads investing community rather than from any regulator or fund company, and what defines it is as much what it leaves out as what it includes.
- Ticker Symbol
A ticker symbol is the short string of letters that identifies a security on an exchange, such as the code you type to look up or trade a stock. It is a label for finding and trading a security, not a measure of anything about it.
- Timberland Investing
Timberland investing is owning forestland for the combined value of the land and the trees standing on it. Its distinctive feature is that the crop keeps growing whether or not the market cooperates, so the owner can postpone the harvest when prices are poor.
- Time Value of Money (TVM)
The time value of money is the principle that a dollar available today is worth more than the same dollar received later, because today's dollar can be invested and earn a return in the meantime.
- Time-Weighted Return (TWR)
A time-weighted return measures how an investment or a manager performed by removing the effect of when money was added or withdrawn. It answers what a dollar invested at the start would have done, which is why it is the number funds publish and usually not the number your own account earned.
- Tokenized Assets
A tokenized asset is a stock, bond, fund, property or commodity whose ownership is represented by a crypto asset recorded on a blockchain. Putting an asset on a ledger changes how ownership is recorded, not what the asset is or which law governs it.
- Total Bond Market Fund
A total bond market fund is an index fund that aims to hold the broad U.S. investment-grade bond market in a single fund, usually by tracking an index such as the Bloomberg U.S. Aggregate Bond Index. It is the fixed-income counterpart to a total stock market fund.
- Total Return
Total return is what an investment produced counting everything: the change in price plus the income it paid, with that income treated as reinvested. It is the measure that answers what actually happened to the money, rather than what happened to the quoted price.
- Total Stock Market Index
A total stock market index aims to represent the whole investable US stock market rather than a selected slice of it. There is no single index by that name. Several providers publish competing versions that differ in how many companies they include, how they treat closely held shares, and how often they reconstitute.
- Tracking Error
Tracking error measures how closely a fund's return follows the return of the benchmark index it is built to track, usually expressed as the standard deviation of the difference between the two over time. A lower tracking error means the fund is doing a better job of matching its index.
- Trade Confirmation
A trade confirmation is the written notice a brokerage must give a customer at or before the completion of a securities transaction, setting out what was bought or sold, at what price, on what date, and in what capacity the firm acted. The capacity line is the field most people never read and the one that explains how the firm was paid.
- Trade Deficit
A trade deficit exists when a country's imports of goods and services exceed its exports over a period. The headline U.S. figure is a net number: a large deficit in goods offset by a smaller surplus in services, published monthly by the Census Bureau and the Bureau of Economic Analysis.
- Trading Halt
A trading halt is a temporary stop in trading in one security, or in every security at once. While it is in effect a member firm may not trade the security or publish a quotation in it anywhere, including off-exchange, and it is the security's primary listing market that declares the halt and says when trading resumes.
- Transfer on Death Registration
A transfer on death registration is a beneficiary named on the records of a brokerage or securities account, so that ownership passes directly to that person when the owner dies, without probate. The statutory term for it is registration in beneficiary form, and the beneficiary has no rights in the account at all while the owner is alive.
- Treasury Auction
A Treasury auction is the bidding process by which the US Treasury sells its marketable securities to the public: bills, notes, bonds, inflation-protected securities and floating rate notes. Every buyer in an auction pays the same price, set by the highest yield Treasury has to accept to sell the whole offering, and an individual bidding noncompetitively is guaranteed the amount requested at that price.
- Treasury Bill
A Treasury bill is a short-term debt security issued by the United States Treasury that pays no coupon. You buy it for less than its face value, or occasionally at face value, and the return is the difference you receive at maturity. It is backed by the full faith and credit of the United States rather than by deposit insurance.
- Treasury Bond
A Treasury bond is a marketable debt security issued by the United States Treasury with a term of 20 or 30 years. It is the longest security Treasury sells, which makes it the one with the strongest credit and the most volatile price at the same time.
- Treasury Inflation-Protected Securities (TIPS)
Treasury Inflation-Protected Securities are US Treasury bonds whose principal moves up and down with the Consumer Price Index, so both the interest payments and the final repayment track prices. The annual increase in principal is taxable federally in the year it happens, before any of it is paid out.
- Treasury Note
A Treasury note is an intermediate-term debt security issued by the United States Treasury, with a maturity of 2 to 10 years and interest paid every six months. The benchmark 10-year note is one of the most watched securities in the world.
- Treasury Yield
A Treasury yield is the rate of return an investor earns on a U.S. Treasury security, expressed as an annual percentage. Yields move opposite to prices, and the pattern of yields across different maturities, the yield curve, is one of the most watched signals in finance.
- TreasuryDirect
TreasuryDirect is the US Treasury's official website, TreasuryDirect.gov, where individuals can buy Treasury securities and savings bonds directly from the government with no broker or fee.
- Turnover Ratio
A turnover ratio measures how much of a fund's portfolio was replaced over a year, expressed as a percentage. A high turnover ratio means the manager traded a large share of the portfolio; a low one means most holdings stayed in place, which is the pattern typical of an index fund.
U
- Unemployment Rate
The unemployment rate is the share of the labor force that is jobless but actively looking for work and available to take it. The headline figure in the United States is published monthly by the Bureau of Labor Statistics.
- Unit Investment Trust (UIT)
A unit investment trust is one of the three statutory classes of registered investment company, separate from the management companies that mutual funds and closed-end funds belong to. It holds a fixed portfolio chosen at the outset, has no board of directors and no ongoing manager, and terminates on a date set when it is created.
- Unrealized Gain
An unrealized gain is the amount by which something you still own is worth more than its adjusted basis. It is a measurement rather than an event, no tax is due on it, and there are four quite different ways it can end, only one of which involves paying tax on it.
- Unregistered Securities Offering
An unregistered securities offering is a sale of securities that has not been registered with the Securities and Exchange Commission. Many are perfectly lawful, because federal law requires registration or an exemption. What the buyer loses either way is the disclosure regime that registration brings.
V
- Value Investing
Value investing is the strategy of deliberately holding more of the companies whose shares look cheap against what the business earns or owns than a broad market fund would hold. Choosing the companies is the easy half; the strategy only pays the investor who holds an unpopular position long enough for the disagreement to be settled.
- Value Stock
A value stock is a share that appears cheap relative to what the company earns or owns, bought on the belief that the market is underpricing it. FINRA states the risk in the same breath as the definition: investors may be avoiding the company for good reasons, and the low price may be a fair reflection of its value.
- Velocity of Money
The velocity of money is how often a unit of currency is used to buy domestically produced goods and services in a period. It is not observed directly. It is computed as nominal gross domestic product divided by a measure of the money stock, which means it is a ratio derived from two other statistics rather than something anyone measures.
- Venture Capital (VC)
Venture capital is money invested in young, high-growth private companies, usually through funds that take minority equity stakes in startups in exchange for financing their growth. Most bets fail, and the fund relies on a few large successes to carry the whole portfolio.
- Volatility
Volatility is how much a measured quantity moves around, usually the return on an investment. It is commonly reported as the standard deviation of returns. It measures movement in both directions, which is why it is a useful statistic and a poor definition of risk.
W
- Wage Growth
Wage growth is the rate at which pay is rising. There is no single official series by that name; three widely used measures answer three different questions, and they routinely disagree because two of them can move when the mix of who is employed changes and one is built not to.
- Wage-Price Spiral
A wage-price spiral is a proposed feedback loop in which rising prices push workers to demand higher pay, higher pay raises the cost of production, and employers pass that cost into prices, which restarts the cycle. It is a named mechanism, and whether any particular episode of inflation fits it is a separate question from whether the mechanism is coherent.
- Wash Sale Rule
The wash sale rule disallows a loss on the sale of stock or securities if you acquire substantially identical holdings within 30 days before or after the sale. It does not destroy the loss in most cases: it moves the amount into the basis of the replacement shares, so the deduction is postponed rather than forfeited.
- Wealth Inequality
Wealth inequality describes how unevenly net worth is held across households at a point in time. It is a stock rather than a flow, it is measured in the United States chiefly through the Federal Reserve's Survey of Consumer Finances, and the survey's own definition of net worth leaves out two of the largest retirement resources many households have.
- Wealth Management
Wealth management is a bundled service model in which one firm manages a client's investments and coordinates the planning around them (taxes, estate, insurance, sometimes banking and lending) typically for a percentage of the assets it manages, and typically for wealthier clients.
- Whiskey Cask Investment
A whiskey cask investment is the purchase of an individual barrel of maturing spirit that stays in a bonded warehouse, bought on the expectation that it will be worth more later. What the buyer owns is a warehouse record rather than anything they can hold, and confirming that record is the whole of the due diligence.
- Wholesaling Real Estate
Wholesaling real estate is contracting to buy a property and then selling the contract rather than the property. The wholesaler never takes title; what changes hands is the right to complete the purchase, and the wholesaler's profit is the difference between the contract price and what the end buyer pays for that right.
- Wine Investing
Wine investing is buying bottles of wine in the expectation of selling them for more later. It differs from every other collectible in one basic way: the asset is perishable, so its value rises and then falls over the bottle's life rather than depending on scarcity alone.
- Wrap Fee Program
A wrap fee program bundles investment advice, trading, and account services into one all-inclusive fee, typically a percentage of the assets in the account, instead of charging separately for each trade.
- Wrapped Token
A wrapped token is a crypto asset issued on one blockchain to represent a crypto asset deposited on another, redeemable one for one. What the holder owns is a receipt against whoever holds the deposit, which makes that provider a counterparty.
Y
- Yield
A yield is income expressed as a percentage of what the investment costs or is currently worth. One word covers several different measures across deposits, bonds, stocks and funds, and two investments quoting the same yield are rarely making the same claim.
- Yield Curve
A yield curve plots the yields on debt of one issuer against the length of time to repayment. The one people mean is the US Treasury's, which the Treasury publishes every trading day as the Daily Treasury Par Yield Curve Rates.
- Yield Farming
Yield farming is the practice of depositing crypto into decentralized finance protocols to earn fees and newly issued reward tokens, and moving between protocols as those rewards change. The advertised rate is a rate of token emission, not a return, and the two can point in opposite directions.
- Yield to Maturity (YTM)
Yield to maturity is the single annualized return a bond investor earns if they buy at today's price and hold the bond until it matures, counting every coupon and the gain or loss between the purchase price and the face value repaid at the end.
Z
- Zero-Coupon Bond
A zero-coupon bond pays no interest along the way. It is sold for well below its face value and pays the full face value on one date, at maturity, so the entire return is the difference between the two.
- Zero-Days-to-Expiration Options (0DTE)
A zero-days-to-expiration option, usually called a 0DTE option, is a listed option contract traded on the day it expires. It is not a separate product but the last day in the life of an ordinary option, and it is the day on which the contract's entire remaining value is decided.
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