What Are Prediction Markets? Simple Definition, Examples & Risks

Prediction markets are markets where people trade contracts tied to future events. Instead of buying a stock or a commodity, a trader buys exposure to a question: will this event happen, yes or no?

The useful part is not only the final answer. It is the price before the answer is known. A market price can act like a live probability signal, updating as new information appears.

This page is the short definition layer. If you already know what prediction markets are and want the mechanics, go to how prediction markets work.

What Is a Prediction Market?

A prediction market starts with a clearly defined outcome. For example: will a central bank cut rates at its next meeting, will a candidate win an election, or will a city record measurable rain tomorrow?

Participants buy and sell contracts based on their view of the outcome. In the common YES/NO format, a contract usually settles to $1.00 if the answer is yes and $0.00 if the answer is no.

That simple structure turns opinions into prices. If YES trades near $0.63, the market is roughly saying that the outcome is being priced around a 63% probability. It is not a scientific forecast. It is a traded consensus.

Prediction Markets vs Polls

Polls ask people what they think or prefer. Prediction markets show what people are willing to risk money on. That difference matters because incentives can change behavior.

A poll can measure opinion at a point in time. A prediction market can update minute by minute as traders react to news, data, rumors, and uncertainty. Neither tool is perfect, but they answer different questions.

Prediction Markets vs Betting

Prediction markets can look like betting because both involve uncertain outcomes. The key difference is market structure. In a prediction market, prices move through trading between participants, not just through odds posted by a bookmaker.

That does not make them safe or automatically better. It only means the price itself becomes useful information. A changing price tells you how the market is updating its probability estimate.

Prediction Markets vs Trading

Traditional trading usually focuses on assets such as stocks, bonds, commodities, or crypto tokens. Prediction markets focus on event outcomes. The trade is about whether a defined event resolves one way or another.

Event trading is the broader behavior of using those event contracts as positions. For the broader category, see the event trading hub.

A Short Real-World Example

Imagine a rate-cut market before a central bank meeting. At first, YES trades around 35%. The market is uncertain. Then a weaker-than-expected economic report arrives, and traders quickly reprice YES to 55%.

Nothing has resolved yet. The central bank has not made a final decision. But the market has absorbed new information and changed the implied probability. That is the core idea: prediction markets turn changing expectations into visible prices.

For a full numeric walkthrough with entry price, exit price, payout, liquidity, spread, and resolution, use the mechanics guide instead of this definition page.

Common Types of Prediction Markets

• Binary markets: a YES/NO question, such as whether an event happens.
• Multiple-choice markets: several possible outcomes, such as which candidate, team, or option wins.
• Range or scalar markets: outcomes based on a number, such as inflation, temperature, or a price range.

Most beginners should understand the binary format first. It is the foundation for the price/probability logic used across the category.

Who Uses Prediction Markets?

• Beginners who want a concrete way to understand probability.
• Market observers who want a live signal around politics, macro events, sports, weather, or crypto.
• Researchers and analysts who compare market probabilities with polls, models, or public commentary.
• Platform shoppers who need to compare regulated exchanges, crypto-native venues, and specialized markets.

If you are comparing venues, use the prediction market platforms database rather than relying on a definition article.

Basic Risks and Limitations

Prediction markets are not magic forecasts. They can be wrong, thinly traded, slow to update, or distorted by a small number of aggressive traders. Resolution rules can also matter more than beginners expect.

• Total loss: a losing contract can settle at $0.00.
• Liquidity risk: thin markets can be hard to enter or exit at a fair price.
• Resolution risk: the official rules decide the result, not the headline version of the story.
• Availability risk: platform access, rules, and legal treatment vary by location.

What to Read Next

Start with this definition if the category is new. Then read the mechanics guide to understand pricing and payout math. After that, use the beginner guide when you want a practical learning path.

FAQ

What is a prediction market in simple terms?

It is a market where people trade contracts based on whether a future event happens. Prices act like live probability estimates.

Are prediction markets the same as polls?

No. Polls measure stated opinions. Prediction markets show traded prices created by people risking money on an outcome.

Are prediction markets the same as betting?

They can look similar because both involve uncertain outcomes, but prediction markets use market prices and tradable contracts. They still involve risk and should not be treated as safe.

Can you lose money in prediction markets?

Yes. A contract can settle at $0.00, and thin markets can be difficult to exit. Treat them as risky educational/trading instruments, not guaranteed income.