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NEW: Prediction Markets API

One REST API for all prediction markets data

Market Probability

Market probability is the percentage chance that a prediction market assigns to a specific outcome. It reflects how traders collectively estimate the likelihood of an event happening.
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Market probability is the core signal produced by prediction markets. Every trade shifts the probability up or down, showing how the crowd interprets new information. This creates a running estimate of the event’s likelihood that updates continuously.

Because prediction markets rely on financial incentives, traders reveal their beliefs through buying and selling. When confidence rises, the probability moves upward; when doubts appear, it moves downward. The result is a clear, real-time measure of sentiment.

Market probability is often easier to understand than other forecasting tools because it exists on a simple 0–100% scale. It shows not just what people think will happen, but how strongly they feel about it. Over time, these shifts form a detailed picture of how expectations evolve.

Market probability provides a quick, intuitive way to understand forecasting signals. It shows how new information affects expectations and gives teams a measurable indicator they can track, compare, and analyze.

Market probability adjusts rapidly because prediction markets update with every trade. When someone buys shares, the price increases slightly, signaling higher confidence in the outcome. This constant feedback loop makes the probability responsive to news, rumors, and sentiment shifts. Traders incorporate new information as soon as they see it, which helps produce fast-moving and informative prediction markets data. The result is a real-time indicator of changing expectations.

Analysts use market probability to monitor trends, track sentiment, and evaluate how expectations shift around key events. It helps them compare prior beliefs with new signals and identify moments when the crowd’s view begins to change. By reviewing the full history of market probability, analysts can study how predictions responded to specific announcements or developments. Many teams combine these signals with traditional analytics to strengthen forecasting models. This layered approach gives a clearer view of future scenarios.

Market probability is tied to financial incentives, which encourages participants to be more accurate than in polls. Instead of giving opinions, traders make decisions that cost money, reducing noise and guesswork. Markets also update continuously, unlike most surveys that run on fixed schedules. This creates a steady flow of prediction markets data that reflects real-time belief shifts. For many forecasting use cases, this ongoing clarity is more informative than static predictions.

A prediction market tracks whether a company will meet its quarterly revenue target. As earnings rumors spread, traders adjust their positions, causing the market probability to climb or drop. Leadership watches the probability trend to gauge internal expectations before the official report.

Market probability becomes far more useful when it’s easy to access, track, and analyze over time. FinFeed's Prediction Markets API delivers clean prediction markets data—including historical probability paths, market updates, and outcome records—that teams can use to study how beliefs shift and build tools that react to those changes. This makes market probability a practical data signal rather than just a visual indicator on a trading screen.

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