Prediction Markets

Event Contract

A contract that pays $1 if an event occurs and $0 if it doesn't. The price reflects the market's implied probability.

Also known as: binary contract, prediction market contract, binary option

Definition

An event contract is a binary instrument traded on prediction market exchanges. You buy a 'Yes' contract at a price (e.g., $0.65) and receive $1 if the event occurs, or $0 if it doesn't.

The price directly reflects the market's implied probability: a $0.65 Yes contract implies a 65% chance. You can also sell or buy 'No' contracts, which pay $1 when the event doesn't occur.

Event contracts are regulated by the CFTC in the US and are legally distinct from sports betting. They cover politics, economics, weather, sports, and more.

Worked Example

Buy 100 Yes contracts at $0.40 each ($40 total). If the event occurs: receive $100, profit = $60. If not: lose $40. Break-even win rate = 40%.

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