Prediction Market

A prediction market is a market in which participants buy and sell contracts whose payout depends on the outcome of a future event, such as an election, a sporting event or the weather. The CFTC describes prediction markets as offering "a variety of products designed to help the public forecast, plan for, hedge, and even harness perceptions of future events," and notes that the products traded on them are frequently called event contracts, which have existed in U.S. regulated markets for more than two decades. An event contract is typically structured as a swap, which, like futures contracts and options on futures, is a derivative; its value comes from the outcome of the event. Event contracts are often yes-or-no questions that pay a fixed amount, usually $1, to the correct side at expiration, though some frameworks offer multiple-choice outcomes or partial payouts. The instrument has a regulatory name, event contract; the market where it trades is what most people call a prediction market.

What the price means. Because a winning contract pays $1 and a losing one pays nothing, the price of a "yes" contract can be read as the market's collective estimate of the probability that the event happens. The CFTC's own example: on a $1 contract asking "Will it rain tomorrow?", a "yes" price of 70 cents and a "no" price of 30 cents reflect the market's expectation, and a buyer of "yes" at 70 cents earns 30 cents if it rains and loses the 70 cents if it does not. The CFTC adds that combining many traders' knowledge can sometimes forecast outcomes better than polling. A price is still only the level at which traders last agreed to deal. Fees, thin trading and traders' own biases all shape it, and an event priced at 70 cents should still fail about three times in ten if the price is accurate.

How regulated venues differ. On a CFTC-registered exchange, the CFTC says, the exchange and intermediaries must pass an application process and periodic examinations, follow core principles against manipulation and insider trading, and do not take the other side of a customer's trade, and customers can trade out of a position before it settles. The brokers that hold customers' money must follow the CFTC's customer protection rules, the National Futures Association adds its own oversight, and customers can complain to the exchange, NFA or the CFTC. The CFTC warns that customers "may have little or no protections" with unregistered platforms operating outside the United States.

The law and its open questions. The Commodity Exchange Act lets the CFTC determine that event contracts listed on a registered exchange are contrary to the public interest, and so may not be listed, if they involve activity unlawful under federal or state law, terrorism, assassination, war, gaming, or similar activity it identifies by rule (7 U.S.C. § 7a-2(c)(5)(C)). In 2026 the CFTC withdrew a 2024 event-contracts proposal in February, published an advance notice of proposed rulemaking on prediction markets in March, and in June proposed a framework for deciding whether a contract involves one of the activities the statute lists and, if so, whether it is contrary to the public interest, citing the growth of contracts that include ones on sporting events. The CFTC's position is that regulated prediction markets fall under its exclusive jurisdiction and can operate in all 50 states under federal law. Some states have challenged that, and in February 2026 the CFTC filed a brief in the U.S. Court of Appeals for the Ninth Circuit, in a case between a CFTC-registered exchange and Nevada's gaming regulators, supporting its exclusive jurisdiction. What may be listed, and where, can change as the rulemaking and the litigation end.

An event contract asks a question with a defined answer, a settlement source and an expiration. Traders buy "yes" or "no" at the current price, between 0 and $1. At expiration, contracts on the correct side pay $1 each and the others pay nothing. Before then, a trader can sell at the market price to lock in a gain or cut a loss.

Consider an example. Tamsin buys 200 "yes" contracts at 35 cents on whether a city's total snowfall will exceed 12 inches by March 31, paying $70 (200 times $0.35) plus any fee. If the snowfall passes 12 inches, she receives $200 (200 times $1), a gain of $130 before fees. If it does not, the contracts pay nothing and she loses the $70. If a storm in February lifts the "yes" price to 60 cents, she can sell early for $120 (200 times $0.60) and keep a $50 gain, giving up the extra $80 she would collect if the event did happen. Her break-even at expiration, ignoring fees, is the price she paid: she needs the event to happen more than 35 percent of the time across many such bets to come out ahead.

Pros

• The risk on each contract is known in advance: a buyer can lose only what was paid for it.
• On a CFTC-registered exchange the venue is supervised, does not take the other side of the trade, and lets positions be closed before settlement.
• Event contracts can hedge a real risk, such as a farmer's exposure to a freeze, which is the use the CFTC gives as an example.
• Prices aggregate many traders' information and can be a useful public signal.

Cons

• Each contract is all-or-nothing, and frequent small bets can add up to large losses.
• Fees and wide spreads on thinly traded contracts eat into returns.
• Unregistered and offshore platforms offer "little or no protections," in the CFTC's words.
• The rules on which contracts may be offered, and the dispute between the CFTC and some states, are unsettled.