In-the-Money

In-the-money, out-of-the-money and at-the-money are the three descriptions of where an option's fixed strike price sits relative to the current price of the underlying security. The Securities and Exchange Commission's investor bulletin on options states the framework and then the rules: "the relationship between the strike price and the actual price of a stock determines whether the option is 'in-the-money,' 'at-the-money,' or 'out of the money.'" A call option "is in-the-money if the strike price is below the actual stock price"; a put option "is in-the-money if the strike price is above the actual stock price." A call is out-of-the-money if the strike is above the actual stock price and a put is out-of-the-money if the strike is below it. "'At-the-money' has the same meaning for puts and calls and indicates that the strike price and the actual price are the same."

These are three states of one measurement rather than three separate ideas, which is why they are covered together. A page that explained only the in-the-money case would have to state the out-of-the-money rule anyway in order to make it mean anything, and the same is true in reverse.

Two related words are worth naming. Market-quality analysis sometimes uses "moneyness" as the abstract noun for the measurement, but the SEC's investor-facing bulletin names the three states and does not use it. And employee stock options attract their own vocabulary, where an option whose strike is above the share price is usually called underwater rather than out-of-the-money; our page on the strike price covers that setting.

The direction reverses between calls and puts, and this is the single commonest error in the whole subject. A call gives the right to buy at the strike, so it is worth using when the strike is the cheaper of the two prices, which means below the market. A put gives the right to sell at the strike, so it is worth using when the strike is the dearer of the two, which means above the market. Stated as a rule to remember rather than memorize: an option is in the money when exercising it would beat transacting in the open market. The SEC's two sentences are that rule applied twice.

Only an in-the-money option has intrinsic value, and everything else in the premium is the price of time and expected movement. Intrinsic value is what the right is worth if exercised immediately, so it is zero for an out-of-the-money contract and zero for an at-the-money one. The rest of what a buyer pays reflects how long the contract has to run and how far the underlying is expected to move. The SEC's own list of what determines a premium is exactly those three inputs: "the underlying stock price in relation to the strike price," "the length of time until the option contract expires," and "the price volatility of the underlying stock." The first of those is this page's subject; the third is covered on our page for implied volatility.

A deep out-of-the-money option is cheap for a reason that is easy to misread. Its whole premium is the second component, so it is a bet that the underlying moves far enough, in the right direction, before a date. That combination of conditions is why the contract is cheap, and price alone tells a buyer nothing about whether it is good value; a low premium on a contract that needs an improbable move is not a discount.

The margin rules formalize the same measurement, which is a useful confirmation that it is a real quantity rather than a manner of speaking. FINRA Rule 4210(f)(2) uses "in-the-money amount" and "out-of-the-money amount" as computed figures, and defines the latter for stock options as, for a call, "any excess of the aggregate exercise price of the option over the current market value of the equivalent number of shares of the underlying security," and for a put, "any excess of the current market value of the equivalent number of shares of the underlying security over the aggregate exercise price." Margin on a short option may be reduced by that amount, subject to floors. So the distance by which an option is out of the money has a dollar value in the rulebook, not only in conversation.

Being in the money and being profitable are different questions, and conflating them is how a holder concludes a losing trade is a winner. Crossing the strike changes the option's status; it does not repay the premium already spent. A call buyer is ahead only above the strike plus the per-share premium, and a put buyer only below the strike minus it. Our pages on the call option and the put option work each of those through with numbers.

Where the state actually decides something on its own is at expiration. Expiring standardized equity options are subject to the clearing corporation's Exercise-by-Exception procedure, under which contracts in the money by specified amounts are exercised automatically unless the holder gives contrary instructions. So the three states are not merely descriptive on the final day: which one a contract lands in determines what happens to it by default. Our page on options expiration covers that machinery, and our page on options assignment covers what it does to the writer.

Compare the strike price with the current price of the underlying, then apply the rule for the contract's type. For a call, strike below market is in the money and strike above market is out of it. For a put, strike above market is in the money and strike below market is out of it. Equal is at the money in both cases. The distance between the two prices, multiplied by the contract size, is the intrinsic value.

A hypothetical illustration, using the SEC's own example contract. Suppose an investor holds an ABC December 70 Call, which covers 100 shares at a strike of $70.00.

If ABC is trading at $80.00, the strike is below the stock price, so the call is in the money. The SEC states the size of it: "the buyer's option position is in-the-money by $10, since the option gives the buyer the right to purchase ABC stock for $70." Across the contract's 100 shares that is $1,000.00 of intrinsic value. If the contract itself is quoted at $10.20 per share, the remaining $0.20 per share, or $20.00 for the contract, is what the market is charging for the time left and the movement expected in it.

If ABC is instead trading at $60.00, the strike is above the stock price, so the same call is out of the money, by $10.00 a share. Its intrinsic value is zero, because nobody would use a right to buy at $70.00 what the market sells at $60.00, and every cent of its premium is the second component.

Now hold the prices still and switch the contract to an ABC December 70 Put. At $60.00 the put is in the money by $10.00 a share, because the right to sell at $70.00 is worth using. At $80.00 it is out of the money by $10.00. Same two stock prices, same strike, opposite answers. All figures are illustrative and ignore fees.

Why the distinction is worth getting right

• It is the fastest read on whether a contract has any intrinsic value at all, which is a different question from whether it is cheap.
• It decides what happens by default at expiration, because automatic exercise keys off it.
• It is a defined quantity in the margin rules, so the distance out of the money has a dollar effect on what a short position must collateralise.
• Stating it as a comparison between the strike and the market price, rather than as two memorized rules, makes the call and put cases fall out of the same question.

Where it misleads

• It says nothing about profit. A contract can be in the money and still be worth less than the premium the holder paid for it.
• The direction reverses between calls and puts, so a rule half-remembered from one produces exactly the wrong answer on the other.
• An out-of-the-money contract is cheap because it needs an improbable move, which is a warning rather than a bargain.
• At-the-money and just-in-the-money contracts are the ones whose expiration outcome is least predictable, for the holder and the writer alike.
• The employee-equity world uses "underwater" for the same idea and different tax and vesting rules apply there, so vocabulary learned on a traded option does not transfer cleanly.