Event contracts are built around a simple idea: a clearly defined outcome that either happens or does not. Each contract is tied to a question, such as whether interest rates will rise or if a candidate will win an election.

These contracts usually have binary outcomes, often labeled “yes” or “no.” If the event happens, the “yes” contract pays out. If it does not, the “no” side wins. The price of each contract reflects how likely the market thinks that outcome is.

As traders buy and sell these contracts, prices change in real time. This creates a live estimate of probability based on collective expectations. The more confident participants are, the more the price moves toward one outcome.

Why It Matters

Event contracts turn expectations about the future into tradable instruments. They allow participants to express views, manage risk, and track probabilities in a clear and measurable way.

How are event contracts priced in markets?

Event contracts are typically priced between 0 and 1, or 0 and 100 cents. The price reflects the perceived probability of the event happening. For example, if a contract trades at 0.65, the market is estimating a 65% chance of that outcome. Prices adjust constantly as new information enters the market and traders update their positions.

What types of events are used in event contracts?

Event contracts can cover a wide range of topics. Common examples include political elections, economic indicators, corporate announcements, and even weather events. Some platforms also support niche or community-driven questions. The key requirement is that the outcome must be clearly defined and verifiable.

How do traders use event contracts for risk management?

Event contracts can be used to hedge against specific risks. For example, a business exposed to interest rate changes might use contracts tied to central bank decisions. If the event occurs, the payout can offset losses elsewhere. This makes event contracts useful not only for speculation but also for managing uncertainty.

Real-World Example

A trader buys a contract that pays out if the Federal Reserve raises interest rates this quarter. If the contract is priced at 0.40, the market sees a 40% chance of that happening. If expectations increase and the price rises to 0.70, the trader can sell early for a profit or hold until the outcome is decided.

Event Contracts and CoinAPI

CoinAPI does not provide event contract data directly, as it focuses on market data such as prices, trades, and order books from exchanges.

However, FinFeedAPI, a sister company of CoinAPI, provides access to event contract and prediction market data, including contract prices, implied probabilities, and outcome tracking. This allows users to monitor how expectations around specific events change over time.