New York Sues Polymarket, Escalating Battle Over Prediction Markets

New York Attorney General Letitia James filed a lawsuit Thursday against Polymarket, accusing the prediction market platform of running an illegal gambling operation by offering sports-related event contracts to state residents without a license. The suit, which could result in Polymarket being blocked from operating in New York, marks the third such action the state has taken against a crypto-linked prediction platform in less than a year — and it deepens an unresolved fight over who actually gets to regulate this fast-growing corner of finance.

The complaint centers on Polymarket’s mobile app, which launched in December 2025 and allowed users to trade on the outcomes of sporting events. New York officials argue that these contracts function no differently than sports bets, placing them squarely under state gambling law rather than federal commodities rules. Because Polymarket does not hold a New York gambling license, the state contends its marketing of these products to residents is unlawful.

A Pattern, Not an Isolated Case

Thursday’s filing is not New York’s first swing at this industry. The attorney general’s office sued Kalshi in July 2026 on similar grounds, and in April 2026 it brought legal action against prediction market products offered through Coinbase and Gemini. In each case, the state’s theory has been consistent: sports-outcome contracts are gambling products dressed up as financial instruments, and platforms offering them to New Yorkers need the same licenses a sportsbook would.

That theory sits in direct tension with the position taken by the Commodity Futures Trading Commission. CFTC Chair Michael Selig has argued that the federal agency holds exclusive jurisdiction over these markets because the contracts are traded as regulated derivatives, not wagers. If Selig’s reading prevails, state gambling laws would have no purchase over platforms like Polymarket and Kalshi, no matter how similar their sports contracts look to a traditional bet.

The jurisdictional standoff has already reached the country’s highest court. New Jersey officials petitioned the Supreme Court earlier in September 2026, asking the justices to clarify once and for all which authority — state or federal — governs prediction markets. As reported in our coverage of state lawmakers’ push to rein in Kalshi’s sports markets through the Supreme Court, that petition remains pending, and the court has not yet said whether it will even take up the case.

What the Lawsuit Means for the Industry

For prediction market operators, the practical stakes are significant. A ruling against Polymarket in New York — or an eventual Supreme Court decision favoring state authority — could force these platforms to seek gambling licenses state by state, a costly and fragmented compliance burden that looks nothing like the single federal registration model the CFTC has encouraged. Conversely, if federal jurisdiction is upheld, states like New York could lose their ability to police sports-related contracts entirely, regardless of local gambling laws.

This is not simply a legal technicality. It shapes whether prediction markets are treated as financial products subject to federal derivatives oversight, or as gambling subject to a patchwork of state restrictions and licensing fees. The outcome will influence where these platforms choose to operate, how they market themselves, and how much regulatory risk investors and users are exposed to when trading event contracts.

The scrutiny extends beyond courtrooms. The New York City council has separately announced a probe into how prediction market platforms market their products to residents, suggesting local lawmakers see marketing practices — not just contract structure — as part of the problem. That inquiry runs parallel to, but distinct from, the CFTC’s own recent warnings about specific contract types; the agency has flagged risks tied to so-called ‘mention’ contracts on speech and separately cautioned that mention-market contracts carry high manipulation risk, underscoring that federal regulators are grappling with their own concerns even as they resist state intervention.

What to Watch Next

Several developments will determine how this conflict resolves:

• Whether the Supreme Court agrees to hear New Jersey’s petition, which could produce a nationwide standard for jurisdiction over prediction markets.
• How New York’s courts rule on the Polymarket, Kalshi, Coinbase, and Gemini cases individually, and whether those rulings are consistent with one another.
• Whether the CFTC under Chair Selig takes further action — such as formal guidance or rulemaking — to assert federal primacy before courts settle the matter.
• The scope and findings of the New York City council’s probe into prediction market marketing practices.

Until one of these processes produces a definitive answer, prediction market platforms will continue operating in a legal gray zone, with state attorneys general and federal regulators pulling in opposite directions over the same products.

Source: Cointelegraph

This content is for informational purposes only and does not constitute financial or investment advice.