Polymarket countersues New York over prediction-market rules

Polymarket has filed a federal lawsuit seeking to block New York from applying state gambling laws to its federally regulated prediction market.

Key points

QCX LLC, which operates Polymarket US, filed a separate federal action in Manhattan seeking to stop New York officials from enforcing state gambling laws against the platform.
The filing came after New York sued Polymarket on September 24, alleging it operates an unlicensed gambling business and permits access by people aged 18 to 20.
Polymarket's federal designation is undisputed, but the new case asks a court to resolve whether that status displaces state gambling regulation in this context.

Polymarket has filed a federal lawsuit against New York Attorney General Letitia James and state gaming officials, opening a second front in a dispute over whether prediction markets should be governed principally by federal derivatives law or state gambling rules. The complaint was filed late September 24 in the U.S. District Court for the Southern District of New York by QCX LLC, which does business as Polymarket US. Public docket listings identify the case as QCX LLC d/b/a Polymarket US v. James et al., No. 1:26-cv-08345.

A countersuit after New York's action

The federal action followed a lawsuit announced earlier Thursday by James and Governor Kathy Hochul. New York alleges that Polymarket runs an illegal, unlicensed gambling operation in the state and exposes people aged 18 to 20 to a platform that should be restricted to users aged 21 or older under state mobile sports-betting rules. The attorney general is seeking an order stopping the alleged conduct, along with fines, forfeiture of gains and restitution for affected users. Those claims are allegations and have not been adjudicated.

Polymarket's new complaint asks the federal court to declare that New York cannot apply its civil and criminal gambling laws to the company's federally regulated market. Reuters reported that the company argues the Commodity Exchange Act gives the Commodity Futures Trading Commission exclusive authority over contracts traded on a designated contract market. The lawsuit also seeks to prevent the attorney general and members of the New York State Gaming Commission from taking enforcement action on that basis.

Federal designation is central to the dispute

CFTC records show that QCX LLC is a designated contract market and operates under the assumed name Polymarket US. The regulator lists the designation date as July 9, 2025. That status allows the venue to list contracts under federal commodities rules, but the designation itself does not settle the preemption question now before the court. New York maintains that its consumer-protection and gambling laws still apply to activity offered within the state.

The timing distinguishes the countersuit from New York's initial case. Polymarket first removed the state's proceeding from New York County Supreme Court to federal court, where public records identify it as No. 1:26-cv-08338. It then filed the separate No. 1:26-cv-08345 action seeking affirmative relief against state officials. The court has not yet ruled on the merits of either side's position, and an early filing does not indicate which jurisdictional argument will prevail.

Why the case matters beyond one platform

The litigation adds to a broader conflict over event contracts tied to sports, politics and other real-world outcomes. Federally registered prediction-market operators argue that a single national framework is necessary for products traded across state lines. State officials counter that contracts resembling wagers can trigger local licensing, age-limit and consumer-protection requirements. Similar disputes involving other operators have produced competing lawsuits and appeals, leaving important boundaries unsettled.

For Polymarket users, the immediate confirmed development is legal rather than operational: the company is asking a federal judge to block New York enforcement, while the state is asking a court to halt what it describes as unlicensed gambling. The next material signals will be any request for temporary relief, New York's response and the court's treatment of the federal-preemption claim. Until then, the CFTC designation and the state's allegations coexist, but neither resolves the central jurisdictional question.

Sources

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