A prediction market is a venue where people trade contracts whose settlement depends on a defined future event. A simple binary event contract pays a fixed amount if its written “Yes” condition is met and pays nothing on that side if the condition is not met; the price can move as traders interpret information, but the rules—not the headline or crowd mood—control settlement.［1］

Key Takeaways

A market question becomes useful only after its terms define the event, deadline, evidence source, and payout.

A quoted price summarizes trading at that moment; it is not a poll result or a guaranteed forecast.

Traders can enter, exit, or hold, while the contract eventually settles from an external fact under written rules.

Regulated exchanges and on-chain systems may use different custody, governance, dispute, and legal structures.

Read the full contract before interpreting any percentage shown by an interface.

What exactly is being traded?

The underlying election, weather reading, economic release, or other event is not itself bought or sold. What changes hands is a standardized claim about how the contract will pay after the event. In a binary design, one side represents “Yes” and the other “No,” and the combined final obligation is normally fixed by the venue's contract design.

Suppose a question asks whether a named weather station will record at least a stated temperature before a precise deadline. A Yes position is not ownership of the weather data, and a No position is not a vote against the forecast. Each is a contractual payoff tied to the rulebook's treatment of the station, unit, time zone, threshold, and published observation.

That distinction matters because a short title can hide decisive details. “Will it reach 30 degrees?” is incomplete until the contract says Celsius or Fahrenheit, identifies the place and measurement source, explains whether exactly 30 qualifies, and establishes which timestamp or later revision counts.

How do prediction markets work from question to payment?

The cleanest way to understand the process is as five connected layers. Confusing any two layers produces many of the common errors readers make.

Layer	What it contains	What it does not prove
Question	A human-readable event summary	The complete settlement test
Contract terms	Threshold, window, source, edge cases, payout	That the event will happen
Trading price	Current bids, asks, and completed trades	A universal or objective probability
Event fact	What happened in the outside world	How ambiguous contract language will be interpreted
Settlement	The venue's final application of rules	That every other platform must reach the same result

First, a venue lists a contract with eligibility, trading, and settlement terms. Participants then place orders on opposing views. When compatible orders meet, a trade occurs; later participants may quote different prices as new information, liquidity, urgency, or risk preferences change.

A holder does not always wait for the final event. If the venue permits it and another participant takes the other side, the holder may close the position before settlement. The exit price can be above or below the entry price, so an early trading result is different from the contract's final fixed payout.

After the relevant window ends, the designated process checks the named source and applies the written criteria. A platform may move through stages such as open, closed, determined, disputed, amended, and finalized; Kalshi documents those labels for its own lifecycle, but they are an example rather than a universal taxonomy.［3］

Who is on the other side of an event contract?

Prediction markets need opposing exposure. Depending on venue design, another customer, a market maker, or an order-book participant may provide the matching side. The platform may operate the marketplace and settlement process without taking the directional view itself.

This structure differs from a house posting fixed sportsbook odds and accepting bets under its own bookmaking model. It can also differ from an automated on-chain market, where smart contracts, collateral, an oracle, and a dispute mechanism divide responsibilities that a centralized venue might handle within one organization.

The practical question is not simply “Who disagrees with me?” It is who holds customer assets, who matches orders, who publishes the rules, who supplies the external fact, who can challenge a determination, and who makes the outcome final. Those roles can sit with different entities.

Why can the price move before anything happens?

An event contract can trade before the event is known because participants value the contingent payoff differently. A new report, a data release, an injury, a forecast update, or merely a large order can change available bids and asks. Thin liquidity can make a small number of orders move the displayed figure sharply.

Many interfaces map a price on a one-dollar binary contract to a percentage. That shorthand can be informative, but it remains market-implied rather than a measurement of truth. Fees, spread, trading constraints, unequal information, risk tolerance, and participant composition can all separate price from a carefully estimated probability.

The last trade can also be stale. If the screen shows a prior transaction at 60 while current buyers bid 54 and sellers ask 58, a new participant cannot necessarily transact at the displayed 60. Our guide to prediction market odds versus probability explains those readings separately.

How is a prediction market different from a poll?

A poll asks selected people what they believe, intend, prefer, or recall, then uses a sampling method to estimate something about a population. A prediction market records prices produced by voluntary trading under financial or token incentives. Neither method automatically dominates the other.

Poll quality depends on sampling, question wording, weighting, response behavior, and timing. Market quality depends on contract clarity, participant access, liquidity, incentives, information, and trading constraints. A market can react continuously, while a poll provides a dated sample; a poll can represent non-traders, while a market may concentrate the beliefs of a smaller self-selected group.

Treating a market price as “60% of people think Yes” is therefore wrong. It does not reveal a headcount, and one participant can trade more than another. It is a clearing outcome among orders, not a survey proportion.

Are all prediction markets regulated the same way?

No. Legal classification, permitted subjects, customer protections, access rules, custody, and enforcement differ across jurisdictions and venue types. The CFTC describes event contracts and prediction markets in the United States within its own statutory and regulatory remit.［1］ That description should not be projected onto every country or every blockchain application.

The policy boundary can also evolve. A 2026 CFTC rulemaking proposal is evidence that the US framework and its treatment of prediction-market contracts remain subjects of formal rule development.［2］ A proposal is not the same as a final rule, and an agency page is not personal legal advice.

Before using any venue, a reader would need to check current local law, eligibility, customer-asset arrangements, fees, market rules, complaint routes, and the exact regulatory status of the operator. A familiar interface or the word “market” does not establish any of those protections.

What should you check before interpreting a market?

Use this compact sequence even if you do not intend to trade:

Read the full question and every definition, not just the card title.
Identify the precise Yes and No settlement conditions.
Record the event window, cutoff, time zone, threshold, and unit.
Find the named resolution source and rules for corrections or missing data.
Distinguish last trade from the current executable bid and ask.
Check whether the shown percentage includes spread or fees.
Identify who determines, challenges, and finalizes the result.
Separate the venue's example workflow from rules that apply elsewhere.

For a field-by-field method, use our guide to reading prediction market resolution rules. The same habit of checking claims, counterparties, and data exposure also belongs in a broader online security routine.

Summary

A prediction market trades conditional claims, not the real-world event itself.
Contract terms connect the question to a specific source, decision process, and payout.
Prices emerge from orders and can change before the event or before finalization.
A market price is neither a poll percentage nor a guaranteed probability.
Venue type and jurisdiction change the applicable custody, dispute, and regulatory protections.

Frequently Asked Questions

Is a prediction market the same as gambling?

The legal and economic classification depends on the contract, venue, and jurisdiction. Some systems operate under derivatives or event-contract rules, some resemble wagering, and some use decentralized protocols, so a single label cannot settle the legal question.

What is a binary event contract?

It is a contract with two mutually exclusive settlement sides, commonly Yes and No. The rules specify which side receives the fixed payout after the designated evidence and decision process establish the outcome.

Does a 70-cent price mean a 70% chance?

It is often displayed as a 70% market-implied probability on a one-dollar binary contract. It is still a price shaped by liquidity, spread, fees, constraints, and traders' preferences, not an independently verified probability.

Can I sell before the event happens?

Some venues allow a participant to close through an offsetting trade while the market remains open and liquidity exists. The result then depends on entry and exit prices rather than the final event payout.

What happens if the event is postponed?

The contract's postponement, cancellation, and time-window clauses control. A venue may extend, void, or settle under a specified fallback, but no response should be assumed without reading that market's full rules.

Who decides whether Yes or No wins?

The rules identify the resolution source and the party or mechanism that applies it. Depending on the venue, this may involve an internal determination, an oracle proposal, a challenge period, a vote, or another formal process.

Are prediction-market prices always accurate?

No. Prices can aggregate useful information, but unclear rules, limited participation, low liquidity, concentration, new evidence, and behavioral biases can all produce error or instability.

Is a prediction market anonymous?

Not necessarily. A platform may require identity checks and retain account, payment, device, or transaction records; public blockchains can expose address activity. Our explanation of whether Bitcoin is anonymous covers why a public address is not the same as privacy.

Disclaimer: This article provides general educational information, not financial, investment, trading, tax, or legal advice. Prediction-market availability, classification, protections, and dispute procedures vary by platform and jurisdiction and may change.

Sources:

CFTC — Prediction Markets and Event Contracts — https://www.cftc.gov/LearnandProtect/PredictionMarkets
CFTC — 2026 Prediction Markets rulemaking — https://www.cftc.gov/LawRegulation/FederalRegister/proposedrules/2026-05105.html
Kalshi — Market Lifecycle — https://docs.kalshi.com/getting_started/market_lifecycle

Sources checked 6 September 2026.

Related reading:

What Is a Prediction Market? Event Contracts Explained