World Cup prediction market volume passes $2 billion as knockout stage begins
Crypto prediction markets on Polymarket and Kalshi surpassed $2 billion in trading volume during the 2026 World Cup, which kicked off its knockout stage with France beating Paraguay 1-0 on July 4. Kalshi hit $30 billion in monthly volume for June, while Polymarket reached $10.8 billion. Mexico is favored over England in a July 5 knockout match, with Polymarket listing active markets for both fixtures. The figure marks a sharp increase from the 2022 Qatar World Cup.
The $2 billion tournament volume proves prediction markets can absorb sportsbook-scale liquidity without settlement failures, a live test of the Bernstein thesis that financial incumbents will acquire prediction-market infrastructure. For Kalshi and Polymarket, clean settlement through the final would open the NFL and Olympics as next verticals and deflate state attorney general arguments that the product is unregulated gambling.
A cracked settlement or fraud case does the opposite, reinforcing the gambling label just as Illinois and other states investigate. The whale bets Kalshi has flagged — including a $360,000 Mexico position — show the pools can take size, but without disclosed open interest or spread data, those remain unverified boasts that institutional desks cannot trade on. Whether the $45 billion June total converts to sustained institutional participation depends on whether the next marquee trade clears without slippage that sends size back to traditional sportsbooks.