Prediction Markets Kalshi, Polymarket and Rothera Set Combined Record Volume in June During World Cup

Prediction market platforms Kalshi, Polymarket and Robinhood's Rothera recorded a combined record month as the 2026 FIFA World Cup began, according to CoinDesk. Kalshi posted $31 billion in total notional trading volume in June 2026, a more than 70 percent increase from May, with sports contracts accounting for around 85 percent of activity. Its World Cup-specific markets reached $22.42 billion.

Polymarket's international exchange set a new monthly record at $10. Its regulated U.S. platform separately logged $3.5 billion, nearly double May's total. Rothera, which launched in June, processed $2 billion in notional volume in its first month and accounted for 7 percent of the U.S.

Prediction market. U.S. legal sportsbooks are projected to handle between $2.8 billion and $4.3 billion across the tournament's 104 matches.4 billion before the group rounds ended.

Kalshi was named FIFA's official prediction market partner during the tournament and signed a co-branding deal with ADI Predictstreet on June 26. Polymarket was fined $1.4 million by the CFTC in 2022 for operating unregistered event-based derivatives. It later acquired a CFTC-licensed exchange for $112 million, received an Amended Order of Designation in November 2025, launched a U.S.

IOS app in December 2025 and removed its waitlist in May 2026. -linked wallets traded $571 million on Polymarket's political markets over the past year. By June 30, Kalshi's daily active users were 36 percent above their June 15 level.

Female users grew 106 percent during the tournament compared with 54 percent growth among male users, bringing the female share of its user base to 33.3 percent. Kalshi and Polymarket together accounted for 78.5 percent of betting app installs across six major platforms tracked through June. DRW has built a dedicated prediction market desk targeting Polymarket and Kalshi.