BlockBeats News, July 21st, 2026 - The FIFA World Cup 2026 marked a watershed moment for the prediction market industry. According to Dapp Radar's statistics, during the World Cup, Kalshi's total platform trading volume reached $54.338 billion, approximately 2.6 times that of Polymarket's $20.988 billion; the World Cup-related event trading volume was $13.591 billion, 31% higher than Polymarket's $10.356 billion.

In terms of user growth, Kalshi's app was downloaded 5.368 million times, far surpassing Polymarket's 2.136 million downloads. The exposure effect of stadium-side advertisements was considered a key driver for Kalshi's lead. While Polymarket led in website traffic with 57.44 million visits, it failed to translate this into a proportional advantage in trading volume and downloads.

As for other platforms, Predict.fun had a total trading volume of $1.092 billion, with $0.886 billion related to the World Cup; Opinion's total trading volume was $1.137 billion, with approximately $0.561 billion related to the World Cup; Limitless achieved a total trading volume of $0.446 billion, with around $0.22 billion related to the World Cup.

From a data perspective, Kalshi and Polymarket have formed a duopoly, accounting for over 95% of the market share combined, while smaller platforms still face a significant gap in absolute volume. The World Cup, as the prediction market's "Super Bowl," had a significant impact. During the event, industry concentration further increased, and brand exposure and user acquisition efficiency are becoming the core variables determining the next phase of the competitive landscape.