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New York sues Polymarket, says it ran illegal gambling operation

By Thomson Reuters Sep 24, 2026 | 9:32 AM

NEW YORK, Sept 24 (Reuters) – New York’s attorney general sued Polymarket on Thursday, escalating her battle against prediction markets, an ​industry that she says violates ‌state laws against illegal gambling.

Attorney General Letitia James filed her petition nearly two months after bringing a similar case against Polymarket rival Kalshi. She ‌filed ​similar petitions in April ⁠against two other ⁠prediction market operators, Coinbase Financial Markets and Gemini Titan.

James’ case against Polymarket is the latest effort by US states ​to crack down on an industry that has soared in popularity since ⁠faring better than pollsters ⁠in predicting that Republican Donald ​Trump would beat Democrat Kamala Harris in ​the 2024 presidential election.

Those states are ‌also at odds with the Trump administration, with the Commodity Futures Trading Commission claiming exclusive authority to regulate prediction ⁠markets.

Federal appeals courts are divided over who should oversee the industry, raising the prospect the US Supreme ⁠Court ‌may need to decide.

Prediction markets ⁠are best known for letting ​people ‌wager through so-called event contracts ​on the ⁠outcomes of sports events, though people can also often wager on elections and cultural events such as the Oscars.

(Reporting by Jonathan Stempel in New York; Editing by ​Bill Berkrot)