This page may contain affiliate links to legal sports betting partners. If you sign up or place a wager, FOX Sports may be compensated. Read more about Sports Betting on FOX Sports. Prediction markets let you trade contracts on the outcome of real world events, from sports to politics to economics, with each contract priced between $0 and $1 based on how likely the market thinks that outcome is to happen. Kalshi and Polymarket are the two biggest prediction markets in the United States. Between the two of them, they carry the deepest liquidity, the broadest sports coverage, and the largest tra...
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