Kalshi is about to do something no prediction market has done before: put its name on the boards at a FIFA World Cup.
The regulated exchange, run by co-founder and chief executive Tarek Mansour, is reported to be closing in on official partner status with FIFA, a deal that would hand it pitchside advertising at the 2026 tournament and exposure across television and digital coverage watched by billions.
The arrangement was first reported by The New York Times’ DealBook and has not yet been confirmed by a formal release from either side, but the direction of travel is unmistakable. A company that spends much of its time insisting it sells financial contracts rather than bets is leaning, hard, into the most mainstream sports marketing there is.
It is a fitting capstone to a frantic few months. Kalshi has been signing football’s biggest names one after another, from the Argentina Football Association, the reigning world champions, to the Croatian Football Federation, which brought Luka Modrić along as an ambassador. Each deal bundles co-branded activations, official data and the right to use team imagery, and each is aimed less at the casual viewer than at the next wave of traders. “The World Cup is the largest stage for any brand,” Mansour said of the strategy, and he has clearly decided to occupy as much of it as he can.
The spending is easy to justify when you look at the volume. In the opening fortnight of World Cup play, Kalshi cleared more than a billion dollars in trades on some days, and it now accounts for roughly nine in ten dollars wagered on regulated prediction markets in the United States, leaving rival Polymarket well behind. Sport, more than politics or economics, is what drives the platform now.
The football push is only the loudest part of a much wider campaign. Kalshi has run a commercial starring Giannis Antetokounmpo, struck a deal with the returning mixed martial artist Nate Diaz, and quietly turned the tennis calendar into another trading floor, listing Wimbledon markets this fortnight on data piped in through a new partnership with Sportradar. For the avoidance of doubt, that tennis presence is a set of markets, not a sponsorship; the Wimbledon name belongs to the All England Club, and the data rights sit with Sportradar.
All of this has reset how the market values the company.
A funding round earlier this year priced Kalshi at around twenty-two billion dollars and pushed Mansour’s estimated personal fortune past two and a half billion. Yet the ground beneath the business is anything but settled. A bipartisan bill introduced in the spring would bar Kalshi and Polymarket from offering sports contracts at all, on the argument that they are gambling dressed up as finance, and the company is fighting a stack of federal lawsuits over whether its sports and election markets are even legal.
Mansour’s wager, in the end, is a bet on familiarity. Put the logo on enough screens and enough boards, attach it to enough champions, and the awkward question of whether Kalshi is an exchange or a sportsbook starts to lose its edge. Whether regulators see it the same way is the one market he cannot yet price.
