Prediction markets now account for 27% of World Cup sports betting volume, with Kalshi processing $40B in bets and Rothera surging 86% in daily volume.

Overall prediction market bets tied to the World Cup on Kalshi and Polymarket have collectively exceeded $29 billion in total trading volume.

Prediction markets processed over $50 billion in World Cup trading volume in June, with Kalshi and Polymarket leading a surge that threatens traditional