CoinDesk
New York Attorney General Letitia James sued prediction-market platform Kalshi on Friday in New York Supreme Court, alleging the company runs an unlicensed gambling business in the state and seeking to bar it from operating there. The petition asks for an accounting of customer bets, losses and company gains, plus restitution, damages and civil penalties equal to three times Kalshi's gains from the activity. It also seeks $100,000 for each unauthorized or attempted offer of sports or mobile sports wagering.
James' office framed Kalshi's event contracts as bets, covering professional and college sports, elections and culture. The lawsuit alleges the platform allows users aged 18 to 20 to wager and lists markets tied to New York college teams, both prohibited for licensed sportsbooks in the state. A federal judge had already denied Kalshi's bid to block state regulators on July 7 and rejected an injunction pending appeal on July 27, leaving the October cease-and-desist order from the New York State Gaming Commission in force.
Why it matters
The complaint follows a contradictory ruling in Minnesota, where the U.S. District Court for the District of Minnesota held the state's law banning prediction markets likely conflicts with the Commodity Exchange Act and granted Kalshi and Polymarket a preliminary injunction alongside the CFTC. New York's theory is civil: even where federal preemption arguments hold up, the state can still pursue consumer-protection and gaming-license enforcement, and the damages model (treble gains plus per-wager penalties) is built to make that math expensive. Kalshi, which reportedly targeted a $40 billion valuation in a June funding round, added 3 million users during the World Cup, more than double the 2 million it reported at the start of May, putting scale directly in the crosshairs.
Market impact
Prediction-market competitors are watching the docket. Polymarket's regulatory posture diverges sharply from Kalshi's US-regulated event-contract model, but a treble-damages ruling against the largest US-regulated venue would chill institutional capital sitting on the sidelines of the sector.
Frequently asked questions
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What is New York alleging Kalshi did wrong?
Attorney General Letitia James alleges Kalshi runs an unlicensed gambling business in New York, taking bets on sports, elections and culture and allowing users aged 18 to 20 to wager, in violation of state gaming and consumer-protection law.
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What penalties is New York seeking from Kalshi?
The lawsuit seeks an accounting of customer bets, losses and company profits, plus restitution, damages, and civil penalties equal to three times Kalshi's gains from the activity, alongside $100,000 for each unauthorized or attempted offer of sports or mobile sports wagering.
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How does this differ from the Minnesota ruling Kalshi won?
In Minnesota, a federal court held the state's prediction-market ban likely conflicts with the Commodity Exchange Act and granted Kalshi, Polymarket and the CFTC a preliminary injunction. New York's suit sidesteps that federal-preemption shield by pursuing state consumer and gaming-license law instead of derivatives…
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What prior rulings had already gone against Kalshi in this case?
A federal judge denied Kalshi's bid to block state regulators on July 7 and rejected an injunction pending appeal on July 27. The New York State Gaming Commission's October cease-and-desist order against the platform remains in force.
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Why does the size of Kalshi matter to the lawsuit?
Kalshi reportedly targeted a $40 billion valuation in a June funding round and added 3 million users during the World Cup, more than double the 2 million it had at the start of May. The treble-damages-plus-per-wager structure in the New York complaint is designed to scale with that user and revenue base.
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