Polymarket

Polymarket is the world's largest prediction market — a peer-to-peer platform where users trade shares in the outcomes of real-world events. Topics span politics, sports, crypto, finance, geopolitics, culture, technology, and more.

Share prices range from $0.01 to $0.99 and represent the crowd's real-time estimate of how likely an event is to happen. If a share trades at $0.30 and the outcome occurs, that share pays out $1.00. Unlike traditional sportsbooks, Polymarket never takes the opposing side of your trade — every order is matched against another participant in a true exchange model.

Markets cover everything from "2026 FIFA World Cup Winner" and "When will Bitcoin hit $150k?" to Fed interest-rate decisions, presidential nominations, geopolitical events, and live sports outcomes across NBA, NHL, UFC, MLB, and 20+ leagues. New markets are added continuously as newsworthy events emerge.

Polymarket has processed over $3.9B in cumulative trading volume and publishes its accuracy track record on a dedicated page — odds are accurate over 90% of the time a full month before resolution, rising above 96% within four hours. The platform's Brier score of 0.0843 across resolved markets represents one of the most calibrated public forecasting tools available.

Funding is supported via crypto, credit/debit card, or bank transfer. Trading is available 24/7 with markets that can be entered or exited at any time before resolution, allowing traders to lock in profits or cut losses as new information develops.