Open Market
In prediction markets, an open market is one that has not reached its closing date. Trading is live, and probabilities continue to update as participants place trades.
Open markets reflect ongoing uncertainty. Prices move in response to new information, changing sentiment, and trading activity. Liquidity and participation are usually highest while a market is open. This is when belief formation and information aggregation are most visible.
An open market can exist before or after a real-world event occurs, depending on the rules. What matters is whether trading is still allowed. Open markets represent live prediction markets data. They are useful for monitoring behavior, reactions, and real-time belief updates.
Why It Matters
Open markets show active forecasting in progress. Knowing a market is open helps users distinguish live signals from finalized results.
How can you tell if a prediction market is open?
A prediction market is open if it is still accepting trades. This status is usually indicated by market metadata or trading availability. Open markets show active price updates. Closed markets do not accept new positions.
How do open markets differ from closed markets in prediction markets?
Open markets allow trading and probability updates. Closed markets stop accepting trades and probabilities become fixed. Open markets reflect live belief, while closed markets reflect final or pending resolution states. This distinction is critical for analysis.
How should open markets be used in prediction markets data analysis?
Open markets are used for monitoring belief changes, detecting reactions, and tracking volatility. Analysts avoid using them for accuracy evaluation because outcomes are not final. Open market data is best suited for real-time analysis and alerts. Final evaluation requires resolved markets.
Real-World Example
On Polymarket, an election market remains open for trading until its specified closing date. During this time, probabilities continue to move as participants react to news and events.
Open Market and FinFeedAPI
FinFeedAPI’s Prediction Markets API provides prediction markets data that includes market status indicators. Analysts can filter for open markets to access live probabilities, volume, and activity signals. This supports real-time monitoring, behavioral analysis, and alerting systems. The API enables consistent identification and analysis of open markets across prediction markets.