World Cup fuels surge in prediction markets

The FIFA World Cup has triggered a wave of trading and new sign-ups on prediction-market platforms, led by Kalshi. The company said it attracted 3 million new users over the course of the tournament, highlighting how a major global sporting event can draw a broad audience into real-money forecasting markets.

Kalshi reported that more than $1.2 billion has been traded on its contracts tied to predicting the World Cup winner, describing this as a record for a single market on its platform. That market is scheduled to close when the final between Spain and Argentina concludes.

Beyond Kalshi alone, more than $5.55 billion is riding on the outcome of the World Cup final across Polymarket and Kalshi, based on figures reported on July 18. The sum underscores how the tournament has become a focal point for prediction markets, concentrating liquidity in a small number of high-profile contracts.

On Kalshi, Spain has been priced as the favorite to win the final, with contracts implying a 59 percent chance of victory over Argentina. These odds place Spain ahead in the market’s assessment, while still leaving considerable probability on an Argentina win.

Trading activity on Kalshi has been strongly tied to the World Cup match calendar. Volumes on the platform have been significantly higher on days when matches are played and notably lower on days without games, indicating that user engagement has been driven by live tournament action.

This pattern suggests that a large share of recent users have focused primarily on World Cup-related contracts. The platform now faces the task of sustaining activity once the tournament ends and the high-profile winner market closes.

To capitalize on the World Cup, Kalshi has launched a series of marketing initiatives aimed at sports fans. These include advertisements featuring soccer players, a partnership with the Argentina national team, and amplified social media posts tied to star forward Lionel Messi.

Kalshi has also sought to present itself as more than a sports-focused venue, even as World Cup contracts account for a substantial portion of current activity. The recent user growth and record single-market trading volumes position the platform at the center of a broader surge in prediction-market participation during the tournament.