World Cup prediction markets hit $2B before kickoff

Polymarket’s World Cup winner market generated roughly $2 billion in trading before the tournament began, with Spain and France each trading near a 16% market-implied chance to win. Kalshi’s regulated market showed a similar top tier, with Spain near 16.5% and France about 16.2%. On Polymarket, England traded near 11%, Portugal around 10% and defending champion Argentina about 9%; Kalshi placed Portugal at roughly 10.5%, England at 10.1% and Argentina at 8.9%.

Prediction markets sell contracts tied to outcomes. A contract priced at $0.40 implies a 40% market probability and pays $1 if that outcome occurs. Traders can buy, sell or change positions as group-stage results, injuries, disciplinary actions or draws alter a team’s path in the 104-match, 39-day tournament.

Kalshi’s World Cup contracts have exceeded $100 million in trading, according to platform data. An industry data summary showed combined monthly global trading volume across major event-contract platforms rose from under $5 billion in September 2025 to about $24 billion by April 2026. For comparison, average monthly legal sportsbook wagers in the U.S. last year were about $14 billion.

Crypto exchanges and wallet firms have linked products to the World Cup. Bitget, OKX and Gate launched event promotions aimed at trading users. Alvin Kan, Bitget Wallet’s chief operating officer, described the appeal of prediction markets to global audiences: “The World Cup shows why this matters: billions of people are not only watching the same moments, but forming views, debating outcomes and acting on conviction in real time.”

Regulatory frameworks differ across platforms. Kalshi operates under Commodity Futures Trading Commission oversight in the United States. Polymarket’s international platform has not been regulated by the CFTC and has generally barred U.S. users; the company has since launched a U.S. operation while its international venue remains larger. State officials and some lawmakers have argued that sports contracts on prediction platforms are effectively gambling and should be subject to state consumer-protection and gaming rules. The CFTC has maintained that certain event contracts can fall under its jurisdiction as derivatives.

Regulators are examining market-integrity risks tied to rising volume. Officials and platform operators point to know-your-customer checks, data security, fraud prevention and the risk of nonpublic information moving prices. Team staff, medical personnel, agents or broadcasters may know injury or availability details before the public, and that information can affect liquid contracts. Platforms report using surveillance tools and monitoring programs; Kalshi cites identity checks and ongoing monitoring, while Polymarket has described a market-integrity framework and has referred suspicious wallets to law enforcement in past cases.

The World Cup will present repeated moments for prices to react as results, injuries and news arrive. The continuous news flow and the tournament’s format mean platforms will process frequent updates and monitor for irregular activity while traders adjust positions across the event.