The lawsuit, announced by the state, asks a court to prevent Polymarket from operating without a gambling license in New York and to recover what the state alleges are illegally obtained gains. The action continues a recent pattern of enforcement by New York against digital-asset platforms. The state filed a similar suit against prediction market competitor Kalshi two months ago, and has also sued crypto exchanges Coinbase and Gemini on related grounds in recent months.
Polymarket allows users to bet on the outcomes of real-world events—such as elections, sports results, and policy decisions—using cryptocurrency. New York regulators have long taken a hard line against unlicensed gambling, and the lawsuit argues that Polymarket's operations amount to illegal wagering.
Neither Polymarket nor its founder has publicly commented on the lawsuit as of Thursday evening. The case adds to the legal uncertainty facing prediction markets, which have grown in popularity but face an unclear regulatory landscape across the United States.