Bellingcat: World Cup betting hit $14 billion on Polymarket and Kalshi
Bellingcat analysis found football fans wagered more than $14 billion on the 2026 World Cup through Polymarket and Kalshi. Sports contracts' share of activity has declined since the tournament ended. Wagers on Cristiano Ronaldo crying ranked among large individual bets. Polymarket provides more information about individual trading accounts than Kalshi does.
Every billion-dollar headline becomes ammunition for lawmakers weighing a ban on sports event contracts. Kalshi and Polymarket now face the problem of their own success: the volume proves mainstream adoption but also proves political salience. Congress can cite hard numbers instead of abstract fears.
Kalshi is already stretched across state fights in New York, Washington, Michigan, Illinois, and New Mexico, plus a Second Circuit appeal. A federal ban would strip the core sports vertical nationwide without waiting for courts. Both platforms must build credible self-regulation on insider surveillance and tax reporting before lawmakers write rules for them. The platform that moves first may shape any ban's final form.
World Cup billion-dollar volume claims now join scrutiny over drug, TV, and political betting as the running storyline for Kalshi and Polymarket, with each record figure adding fuel to congressional debate.