According to The Block, the combined trading volume of the prediction market platforms Kalshi, Polymarket, and Polymarket US reached $44.8 billion in June, a 75% month-over-month increase from $25.66 billion in May. Kalshi saw the largest growth, with trading volume rising from $16.81 billion to $31.5 billion, a 87.4% monthly increase; Polymarket’s main platform recorded $10.26 billion, up 45% month-over-month; and Polymarket US recorded $3.04 billion. The surge in volume was primarily driven by the kickoff of the 2026 FIFA World Cup on June 11, with Kalshi’s World Cup champion prediction market attracting over $832 million in bets, approximately 35% of users betting on France to win.
Kalshi and Polymarket trading volume surges 75% in June amid the FIFA World Cup.
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Summary
Kalshi and Polymarket’s trading volume reached $44.8 billion in June, a 75% increase from May. Kalshi led the growth, surging to $31.5 billion, up 87.4%. Polymarket’s main platform rose 45% to $10.26 billion, while Polymarket US reached $3.04 billion. The 2026 FIFA World Cup, which began on June 11, drove much of the trading volume. Kalshi’s World Cup prediction market saw over $832 million in bets, with France favored by 35% of users.
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