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What a Polymarket price means
A Polymarket market is one binary question with Yes and No outcomes. Polymarket says prices emerge from supply and demand between participants, rather than being set by the platform. Each outcome share is priced between $0.00 and $1.00.
That $0–$1 scale is why a cents price can also be read as a percentage: 63¢ for Yes is a 63% market-implied probability for Yes. It describes the market’s current view, which can change as participants place or cancel orders.
Translate cents into market-implied probability
For a single displayed outcome price, the conversion is direct:
- 18¢ → 18% market-implied probability
- 50¢ → 50% market-implied probability
- 63¢ → 63% market-implied probability
- 82¢ → 82% market-implied probability
This translates a current market price into percentage language. It does not measure the event with scientific precision, prove that an outcome will occur or tell a reader what to buy. Use the Price and Probability Calculator when the conversion itself is the question.
Why the displayed price and order price can differ
Polymarket says the displayed price is normally the midpoint of the best bid and best ask. If the gap between them is wider than 10¢, it displays the last traded price instead. Neither display rule guarantees an executable quote.
For example, with a 34¢ best bid and a 40¢ best ask, the displayed price is 37¢. A buyer would pay the 40¢ ask and a seller would receive the 34¢ bid if those offers were still available. The 37¢ display is useful for reading the market, but it is not the price either side necessarily gets.
For the page-level workflow of checking the question, outcome, available prices and rules, use How to Read a Polymarket Market Page.
Yes, No and the $1 payoff
Yes and No represent opposing outcomes for the same defined question. After resolution, the winning outcome token redeems for $1 and the losing outcome is worth $0, according to Polymarket’s documentation. Before resolution, however, their market prices can move and a position can lose value.
That final $1-or-$0 payoff explains the scale; it does not mean the current displayed Yes and No prices always add up to exactly $1 in every screen state. Bid-ask spreads, the display rule and current available orders matter when reading or acting on a market.
If the practical question is what a position could pay after resolution rather than what a price implies, use the Profit and Payout Calculator.
Read probability with the market rules
A percentage only makes sense after you read the exact question and the resolution rules. Polymarket’s rules identify the resolution source, end date and stated edge cases; the headline does not settle those details by itself.
That is why the sensible order is: read the question, identify whether the displayed number is Yes or No, translate the price, inspect the available bid and ask when execution matters, then read the rules. How Polymarket Works explains the broader market and resolution lifecycle.
Bottom line
A 63¢ Polymarket Yes price means a 63% market-implied probability, not a 63% guarantee or a promised order price. Read it together with the exact question, the available bid and ask, and the resolution rules.
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Frequently Asked Questions
Does a 60¢ Polymarket price mean a 60% chance?
Yes. Polymarket describes a 60¢ outcome price as a 60% market-implied probability for that outcome. It is the market’s current view, not a guaranteed real-world result.
Why can the displayed Polymarket price differ from an order price?
Polymarket normally displays the midpoint between the best bid and ask, while a buyer pays an available ask and a seller receives an available bid. When the spread is wider than 10¢, Polymarket says it displays the last traded price instead.
What does a 50¢ Polymarket price mean?
A 50¢ Polymarket outcome price represents a 50% market-implied probability for that outcome. It does not mean the market is guaranteed to resolve evenly or that a new order will execute at 50¢.
What happens to a Polymarket Yes share if Yes wins?
A Polymarket Yes share redeems for $1 if Yes is the winning outcome after resolution. If No wins, the Yes share is worth $0; the specific market rules determine which outcome wins.
Do Polymarket Yes and No prices always add up to $1?
Not necessarily as displayed prices. Bid-ask spreads, the midpoint display rule and last-trade display rule can make visible prices differ from a simple $1 total, even though the resolved winning outcome pays $1 and the losing outcome pays $0.
Do I need to read Polymarket resolution rules before using the probability?
Yes. Polymarket resolution rules state the source, end date and edge cases for the specific question. The displayed percentage is meaningful only alongside the exact question and the rules that determine the final outcome.