Timothée Chalamet stars in new ad campaign for Kalshi
Actor Timothée Chalamet launched a new advertisement for Kalshi, a CFTC-regulated prediction market platform, on June 11. The campaign was directed by Academy Award winner Linus Sandgren. Online reaction was sharply negative: a Reddit thread framing the ad drew 692 upvotes and 156 comments by June 11, with users comparing the endorsement to American celebrities filming commercials in Japan to avoid domestic reputational risk. Social media commenters mocked the 'Dune' star's participation. No terms or additional creative details were disclosed. Chalamet is also identified as a New York Knicks fan in promotional materials.
Kalshi is doubling down on celebrity advertising to acquire retail traders after Robinhood began routing event contracts to rival Rothera. If star-driven campaigns fail to convert viewers into active users, Kalshi's customer-acquisition cost advantage over Polymarket and DraftKings collapses just as its retail flow pipeline frays.
Joins a second Kalshi sports-celebrity spot in under a day, after Giannis Antetokounmpo's Grease-themed NBA Finals commercial, cementing the platform's bet that star power can offset rival Polymarket's organic reach with mainstream marketing muscle.