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Home/Glossary/Prediction Market
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intermediate

Prediction Market

What is Prediction Market?

A market where you trade contracts on real-world event outcomes, with prices reflecting crowd probability estimates.

Last updated:February 22, 2026

Prediction markets (like Polymarket, Kalshi, and PredictIt) let you buy and sell contracts that pay out based on whether an event occurs. A contract priced at $0.65 implies a 65% probability of the event happening. If the event occurs, the contract settles at $1.00; if not, it settles at $0.00. Unlike traditional betting, prediction markets allow you to sell positions before settlement — you can take profit or cut losses without waiting for the outcome. Prediction markets have been shown to be among the most accurate forecasting tools available, often outperforming expert panels and polls.

In practice

On Kalshi, a regulated prediction market, Trump wins 2024 election contracts trade at $0.58 — implying a 58% probability. You buy 100 YES contracts for $58. If Trump wins, each contract resolves at $1, paying $100 total for $42 profit. If he loses, contracts resolve at $0 and you lose $58.

Prediction markets aggregate distributed knowledge into probability prices. Polymarket, Kalshi, and PredictIt cover elections, economic data (CPI prints, Fed rate decisions), and cultural events (Oscar winners, Super Bowl MVP). A sharp trader who believes Trump is 65% to win finds a 7-point edge — EV per contract = ($1 × 0.65) − ($0.58) = +$0.07, a 12% ROI. Liquidity is the main limit; big positions move price, eroding edge.

Example

<p>On <strong>Kalshi</strong>, a regulated prediction market, <strong>Trump wins 2024 election</strong> contracts trade at <strong>$0.58</strong> — implying a 58% probability. You buy 100 YES contracts for $58. If Trump wins, each contract resolves at $1, paying $100 total for $42 profit. If he loses, contracts resolve at $0 and you lose $58.</p><p>Prediction markets aggregate distributed knowledge into probability prices. Polymarket, Kalshi, and PredictIt cover elections, economic data (CPI prints, Fed rate decisions), and cultural events (Oscar winners, Super Bowl MVP). A sharp trader who believes Trump is 65% to win finds a 7-point edge — EV per contract = <strong>($1 × 0.65) − ($0.58) = +$0.07</strong>, a 12% ROI. Liquidity is the main limit; big positions move price, eroding edge.</p>

Related Terms

Implied Probability

The probability of an outcome as implied by the betting odds, including the bookmaker's margin.

Arbitrage (Arb)

Betting both sides of a market at different sportsbooks to exploit a price gap before execution risk.

Expected Value (EV)

The average amount you can expect to win or lose per bet over time.

Frequently Asked Questions

What does Prediction Market mean in gambling?

A market where you trade contracts on real-world event outcomes, with prices reflecting crowd probability estimates.

What is an example of Prediction Market?

<p>On <strong>Kalshi</strong>, a regulated prediction market, <strong>Trump wins 2024 election</strong> contracts trade at <strong>$0.58</strong> — implying a 58% probability. You buy 100 YES contracts for $58. If Trump wins, each contract resolves at $1, paying $100 total for $42 profit. If he loses, contracts resolve at $0 and you lose $58.</p><p>Prediction markets aggregate distributed knowledge into probability prices. Polymarket, Kalshi, and PredictIt cover elections, economic data (CPI prints, Fed rate decisions), and cultural events (Oscar winners, Super Bowl MVP). A sharp trader who believes Trump is 65% to win finds a 7-point edge — EV per contract = <strong>($1 × 0.65) − ($0.58) = +$0.07</strong>, a 12% ROI. Liquidity is the main limit; big positions move price, eroding edge.</p>

Top Sportsbooks

Editorial platform cards with source-backed notes. Verify current terms on the operator site before acting.

FanDuel Sportsbook

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9.6

Best for: overall experience and ease of use

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BetMGM Sportsbook

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9.2

Best for: sharp odds and casino crossover

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