Polymarket Sues New York AG Letitia James Over Prediction Market Regulation
New York wants treble gains and $100,000 per unlicensed offer from a company it says is worth more than $20 billion. Polymarket answered with a federal lawsuit resting on the Commodity Exchange Act. The desk expects no court to stop Polymarket serving New Yorkers before the November 3 midterms, and the Supreme Court to grant review of prediction-market preemption by June 30, 2027.
The 33-page petition Letitia James filed in New York State Supreme Court on September 24 does not mention the Commodity Futures Trading Commission once. It names QCX LLC, doing business as Polymarket US, a Delaware company with its principal place of business in New York City, and calls every contract on its platform "a bet." It lists the New York Knicks in the NBA Finals, the "New York Governor Election Winner" and the fourth-week eviction on "Big Brother Season 28" as examples. It asks for a permanent injunction, an accounting, restitution, a penalty of three times Polymarket's gains and $100,000 for each unauthorised offer of sports wagering.
Polymarket's reply, reported by Reuters, was to sue James in federal court to block the state from regulating its market at all. The legal theory is the one the state's petition leaves out: that Congress gave the CFTC exclusive jurisdiction over contracts traded on federally designated exchanges, so New York's gambling statutes cannot reach them.
The preemption argument is stronger than New York's petition allows, and weaker than Polymarket's "legal in all 50 states" advertising implies. It will be decided in Washington, on a timetable that runs well past the midterms.
Polymarket's path to this courtroom was unusual. In January 2022 it paid the CFTC a $1.4 million penalty for offering unregistered swaps and agreed to wind down US access. The FBI searched chief executive Shayne Coplan's home in November 2024. In July 2025 the Justice Department and the CFTC closed their investigations without new charges, and Polymarket bought QCEX, a CFTC-licensed exchange and clearing house, for $112 million. The CFTC issued an amended designation order in November, and the US app went live for selected users on December 3, 2025, promising sports first. Intercontinental Exchange agreed in October 2025 to invest up to $2 billion at an $8 billion valuation. New York's petition says the business is now "reportedly" valued at more than $20 billion, with annualised revenue "well over $1 billion." On those figures the QCEX licence cost about half of one percent of today's reported valuation, which makes it one of the better regulatory purchases of the decade.
New York's case is straightforward on its own terms. Gambling is barred by Article I, Section 9 of the state constitution except where licensed, and mobile sports wagering operators hold licences from the State Gaming Commission. According to the petition, those operators generated about $2 billion of gross gaming revenue in 2024 and paid more than $1 billion in state tax, an effective rate of about 50%. Polymarket pays none of it, lets 18-to-20-year-olds open accounts where licensed books require bettors to be 21, and gave new users $20 with the code FREE20. The petition also pleads a violation of the federal Wire Act, a federal claim that gives Polymarket a route to move the state case into federal court if it chooses.
Federal preemption is where the fight is. The Commodity Exchange Act gives the CFTC "exclusive jurisdiction" over swaps and futures traded on a designated contract market, and the Dodd-Frank definition of a swap covers contracts on events "associated with a potential financial, economic, or commercial consequence." On April 6 the Third Circuit, ruling 2-1 in KalshiEX v. Flaherty, upheld an injunction barring New Jersey from enforcing its gambling laws against Kalshi's sports contracts. Judge David Porter wrote that the contracts "are swaps traded on a CFTC-licensed DCM, so the CFTC has exclusive jurisdiction," and held that both field and conflict preemption apply. Judge Jane Roth dissented, arguing that point spreads and game props are gaming contracts that the statute's "special rule" lets the CFTC prohibit. Thirty-four states and the District of Columbia filed as amici on New Jersey's side.
Other courts have gone the other way. A federal judge in Maryland refused to enjoin that state's regulators in 2025. A federal judge in Ohio ruled on March 9 that Kalshi's products amounted to gambling under state jurisdiction, a decision now before the Sixth Circuit. Massachusetts and Washington state courts have issued preliminary injunctions against Kalshi's sports markets, and a Nevada judge enjoined Polymarket on May 29. On the other side, a federal judge in Arizona dismissed criminal charges against Kalshi in May on the ground that the CFTC's jurisdiction is exclusive.
Washington has picked a side. The CFTC, under chairman Michael Selig, has sued nine states, including New York on April 24 in federal court in Manhattan, where it seeks a declaration of exclusive federal jurisdiction. In July it used emergency powers to stop Kalshi cancelling trades that a Michigan court had ordered voided. "A state cannot force a DCM to violate its obligations," Selig said. The CFTC sued Minnesota on May 19 to block the state's new ban on prediction markets.
New York's best argument is that gambling is a traditional state police power, that courts apply a presumption against preemption in such fields, and that the Supreme Court in Murphy v. NCAA in 2018 handed sports betting back to the states. Roth's dissent gives that argument a statutory hook. It also has a political weakness to exploit: the CFTC's stance could change with the next administration, and a preemption doctrine built on agency forbearance is only as durable as the agency. The desk thinks the text still favours the platforms. The swap definition is broad, the Third Circuit majority read it literally, and the current Supreme Court tends to read statutes the same way. But the dissent is credible enough, and the lower-court record divided enough, that the justices will need to settle it.
Nor are the platforms helping themselves. The CFTC ordered George Santos to pay $35,000 in July for manipulating a State of the Union contract and Gabriel Perez, described in press reports as a Trump teleprompter operator, to pay $172,000 in August for insider trading on "mention" markets. A MrBeast video editor was fined in February for trading on inside information on Kalshi. Most of Kalshi's trading is in sports contracts, which makes the "financial consequence" framing harder to sell to a judge who has read the product list.
Winners and losers are clear enough. Polymarket, Kalshi and ICE, which owns a large stake at a valuation that has more than doubled on paper, gain from delay, because every month of operation compounds market share. New York's licensed sportsbooks and the state budget lose if preemption holds, because the tax base shifts to operators that pay federal fees instead of a 50% state levy. Tribal gaming operators, which filed against Kalshi in the Third Circuit, face the same exposure.
The desk's call: no court will order Polymarket to stop serving New York users before the November 3 midterms. The Supreme Court will grant review of a prediction-market preemption case by June 30, 2027, most likely from the Third Circuit or the Sixth. When it rules, the desk expects the platforms to win on CFTC-listed contracts, with the court leaving the agency free to prohibit specific contract types under its public-interest powers.
Checkpoints: the Sixth Circuit's decision on the Ohio appeal, a ruling on the CFTC's own suit against New York in Manhattan, and any cert petition from New Jersey. A Sixth Circuit ruling for Ohio would deepen the split and speed up review. A New York state judge granting James a temporary restraining order before Polymarket can move the case would break the first part of the call. A CFTC decision to bar sports contracts under the "special rule" would end the argument on the platforms' side without any court's help.