New York has sued Kalshi, calling it an illegal gambling operation.
Why it matters: The case could help decide whether prediction markets are regulated as derivatives or as gambling. A ruling or settlement could shape event contracts, online wagering and state enforcement power.
- New York filed suit on July 31, 2026, in Manhattan state court.
- The state says Kalshi is operating an illegal, unlicensed gambling business and wants it shut down and profits disgorged.
- On July 7, 2026, Judge Analisa Torres denied Kalshi’s bid for a preliminary injunction against New York gaming regulators.
- New York had warned in a January 30, 2026 industry alert that sports-related event contracts could be treated as gambling under state law.
New York has escalated its fight with Kalshi from warnings to a lawsuit, accusing the prediction market platform of running an “illegal gambling operation” and seeking to halt its business in the state. The complaint was filed July 31 in Manhattan state court, according to AP.
The attorney general’s office had already signaled its position in a January 30 industry alert, warning that offering sports-related event contracts through purported derivatives exchanges could count as gambling under New York law and expose operators to civil and criminal penalties. The alert said certain violations could carry penalties of up to $25,000 per day.
The lawsuit lands days after a federal setback for Kalshi. On July 7, U.S. District Judge Analisa Torres denied Kalshi’s request for a preliminary injunction against New York gaming regulators, finding the company had not shown the federal Commodity Exchange Act clearly displaced New York gambling law as applied to its sports-event contracts. Reuters, reporting on the ruling, said Torres found New York’s interests in preventing gambling addiction, preserving sports integrity and avoiding unregulated contracts outweighed Kalshi’s federal-preemption arguments at that stage.
New York Attorney General Letitia James and Gov. Kathy Hochul said on July 8 that they would continue to hold gambling platforms accountable to state law, including prediction markets. James said, “No matter what they call themselves, prediction markets like Kalshi are gambling platforms, plain and simple.”
The dispute sits in a broader national fight over who regulates prediction markets - states or the federal Commodity Futures Trading Commission. AP reported that Minnesota’s attempt to ban prediction markets was temporarily blocked in federal court on July 28, underscoring how fast the legal conflict is moving.
By the numbers
- July 31, 2026 - New York filed suit against Kalshi in Manhattan state court.
- July 7, 2026 - Judge Analisa Torres denied Kalshi’s preliminary-injunction request.
- $25,000 per day - potential penalty cited in New York’s January alert for certain violations.
Yes, but: The exact complaint text and full causes of action were not available in the source materials, so the scope of the state’s claims may evolve as the case develops.
What's next: The case now moves through New York state court. Any response from Kalshi, or a ruling on the complaint, could further define the line between derivatives oversight and state gambling law.