Kalshi recruits Messi and Chalamet in prediction market push

Kalshi is leaning on celebrity power to push prediction markets into the mainstream, recruiting Lionel Messi and Timothée Chalamet as it tries to turn event contracts into a consumer brand. The campaign shows how quickly the company is moving beyond trading screens and into entertainment marketing, with the pitch aimed at sports fans, moviegoers and social media audiences alike.

The Messi tie-in came alongside an official partnership with the Argentina Football Association announced June 10 in New York for the duration of the 2026 FIFA World Cup. Kalshi used the activation to promote Argentina World Cup markets, including a bet on whether Argentina would repeat as champions. Messi’s promotional post, which featured teammates Nicolás Otamendi and Rodrigo De Paul, drew more than 1.4 million likes within days, a reminder of the scale Kalshi is trying to tap.

A day later, Kalshi rolled out a Timothée Chalamet campaign that immediately drew attention for a different reason. The one-minute ad, made with filmmaker and cinematographer Linus Sandgren, placed Chalamet in surreal everyday scenes and was met online with criticism from fans who accused him of selling out by backing a controversial prediction-market platform. The reaction underscored the reputational risk baked into Kalshi’s push: celebrity endorsements may widen the audience, but they also invite scrutiny over whether the product is financial innovation or speculation wrapped in influencer marketing.

Kalshi has not said how much it is spending on the celebrity deals. One estimate cited in coverage put contracts in the eight-figure to nine-figure range, depending on terms, a sign that major-name endorsements are becoming an expensive acquisition strategy across the sector. Kalshi has also been building ties with news outlets, the National Hockey League and companies such as Venmo as it works to normalize prediction markets as a mainstream venue for trading on real-world events.

That expansion is unfolding under a tougher regulatory lens. On February 25, the Commodity Futures Trading Commission’s Division of Enforcement issued an advisory warning about misuse of nonpublic information and fraud in prediction markets, including event contracts traded on KalshiEX. Kalshi says it is a regulated exchange and prediction market for real-world events, but the mix of celebrity branding, sports betting sensibilities and federal oversight leaves the company balancing growth against legal and political scrutiny.

The strategy also builds on an earlier celebrity link-up. In February, Giannis Antetokounmpo became a Kalshi shareholder, reportedly the first active NBA player to take an ownership stake in the company. Kalshi later highlighted that relationship in marketing materials, signaling that celebrity and athlete partnerships are not a one-off promotion but part of a broader retail-acquisition playbook.