Market mechanics
What Is a YES Share?
A YES share is a position that pays if the event resolves YES. This guide explains the concept without hype.
Educational note: This guide explains probability and market structure. It is not a recommendation to trade, and availability depends on local rules.
YES share in one sentence
A YES share represents exposure to the event happening under the market rules. If the event resolves YES, it typically pays the resolution value; if it resolves NO, it does not.
Read the rules first
The important part is not only the title. Resolution criteria define what counts as YES, the source of truth, dates, edge cases and dispute handling.
Use probability language
Instead of thinking in slogans, translate price into implied probability and compare it with your own evidence-based estimate.
Next step: compare a market price with your own estimate, then read the rules before opening any external market.
Use the calculatorOpen Polymarket