According to BlockBeats, July 21st marked a turning point for the 2026 FIFA World Cup prediction market. BlockBeats statistics show that Kalshi's total trading volume across its platform reached $54.338 billion during the World Cup, approximately 2.6 times that of Polymarket's $20.988 billion; World Cup-related event trading volume reached $13.591 billion, exceeding Polymarket's $10.356 billion by about 31%.
In terms of user growth, the Kalshi app saw 5.368 million downloads, far surpassing Polymarket's 2.136 million. The exposure from sideline advertising at the games is considered a key driver of Kalshi's widening lead. While Polymarket's website traffic led with 57.44 million visits, it failed to translate into a corresponding advantage in transaction volume and downloads.
On other platforms, Predict.fun had a total transaction volume of $1.092 billion, with $886 million related to the World Cup; Opinion had a total transaction volume of $1.137 billion, with approximately $561 million related to the World Cup; and Limitless had a total transaction volume of $446 million, with approximately $220 million related to the World Cup.
From a data perspective, Kalshi and Polymarket have formed a duopoly, together holding over 95% of the market share, while smaller platforms still lag behind by orders of magnitude in terms of absolute size. The World Cup has a significant "Super Bowl" effect on the prediction market—the industry concentration further increases during the event, and brand exposure and user acquisition efficiency are becoming the core variables determining the competitive landscape in the next stage.