Introduction
How Prediction Markets Work
A simple explanation of how users trade outcomes and how market prices represent probabilities of future events.
How Prediction Markets Work
Prediction markets allow participants to trade on the outcomes of future events. Instead of simply predicting an answer, users buy or sell market outcomes that represent different possible results.
Market prices reflect the collective expectations of participants. As users trade outcomes based on their beliefs, prices adjust to represent the probability of each event occurring.
Through this mechanism, prediction markets transform trading activity into forecasts about future events.
Market Questions
Each prediction market begins with a clearly defined question about a future event.
Examples of market questions may include
• Will Bitcoin exceed $100,000 by the end of 2026?
• Will Ethereum ETF approval occur this year?
• Which team will win the next World Cup?
These questions define the event that participants will trade on.
Market Outcomes
Every market contains possible outcomes that participants can trade.
Common outcomes may include
• YES / NO outcomes for binary markets
• multiple outcomes for categorical markets
• numerical ranges for scalar markets
Participants choose the outcome they believe is most likely to occur.
Price and Probability
In prediction markets, prices represent probabilities.
For example
• YES price = 0.65
• NO price = 0.35
This means the market estimates a 65% probability that the event will occur.
As traders buy or sell outcomes, prices update continuously to reflect new information and changing expectations.
Trading Activity
Participants interact with markets by buying or selling outcomes.
Traders may
• buy outcomes they believe are undervalued
• sell outcomes they believe are overvalued
• adjust positions as new information becomes available
• trade across multiple markets
This trading activity allows markets to aggregate information from many participants.
Market Resolution
When the event occurs, the market is resolved.
During resolution
• the final outcome of the event is verified
• the correct outcome is confirmed
• the market is closed
Once the outcome is finalized, the market lifecycle is complete.
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