Kalshi and Polymarket Combined Trading Volume Surges 75% in June, Significant World Cup Effect
Source：
www.theblock.co
According to The Block, prediction market platforms Kalshi, Polymarket, and Polymarket US reached a combined trading volume of $44.8 billion in June, a 75% month-over-month increase from $25.66 billion in May. Among them, Kalshi saw the largest increase, with trading volume rising from $16.81 billion to $31.5 billion, up 87.4% month-over-month; Polymarket's main platform recorded $10.26 billion, a 45% month-over-month increase; Polymarket US recorded $3.04 billion. The surge in volume was mainly attributed to the 2026 FIFA World Cup opening on June 11; Kalshi's World Cup champion prediction market cumulatively attracted over $832 million in bets, with about 35% of users favoring France to win the championship.
