Polymarket is a prediction market where traders buy and sell shares on the outcomes of real world events, from elections and economic data to sports and culture. Prices on each contract read as implied probabilities, so the order book doubles as a live forecast.
Founded in 2020 and based in New York, Polymarket is the world's largest prediction market by trading volume. It has become the reference venue that journalists, researchers, and traders check first when they want the market's read on an event.
US access is split by design: polymarket.com is view-only for US visitors, while US trading happens through polymarket.us.