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Gaming Edge’s TL;DR
- Kalshi says it added 3 million new users during the 2026 FIFA World Cup.
- The prediction market firm reported generating more than $1.2 billion in trading on its World Cup winner market alone.
Kalshi is reporting that the FIFA World Cup delivered a major growth spike, as the prediction market company added 3 million new users and generated more than $1.2 billion in trading on its World Cup winner market.
According to CNBC, Kalshi said its World Cup winner market set a company record for a single market before the market closed Sunday after Spain beat Argentina 1-0 to capture the title. The company also said daily activity was much stronger on match days than on days without World Cup games.
Kalshi CEO Tarek Mansour told CNBC that the company’s World Cup strategy centered on volume and fast-moving marketing. In his words, “Our volumes are where the news is at.”
The company backed that push with a broad ad campaign. Kalshi partnered with ADI Predictstreet for co-branded stadium ads and with OpenAI so Kalshi contract odds could appear when users searched about tournament games on ChatGPT. It also ran ads featuring Luka Modric, José Mourinho, the Argentina national team, Timothee Chalamet, and J Balvin.
Conrtoversy remains
Even with that growth, the legal and political debate has not gone away. CNBC noted that sports-event contracts remain under scrutiny in a dispute between the federal government and states over whether they are effectively sports betting.
Kalshi’s position is that the Commodity Futures Trading Commission has sole authority to regulate prediction markets. That claim sits at the center of a broader argument with potentially wide implications for gambling policy, especially as sports-related contracts draw more consumer attention.
The immediate takeaway is simple: major sports events can bring huge traffic to prediction markets, but it is still unclear how many of those users will remain active once a tournament ends. Mansour acknowledged that challenge when discussing post-World Cup engagement, saying, “You have to believe there’s not going to be any news after Sunday.”
For players, that means the product category is growing fast, but the rules around it are still being contested. Anyone following these platforms should pay attention not only to headline user numbers and trading volume but also to how regulators and states continue to frame sports-event contracts.
Based on reporting by Davis Giangiulio for CNBC.
