Polymarket US Sues Missouri Attorney General

Polymarket US, operated by QCX LLC, sued Missouri Attorney General Catherine Hanaway and five Missouri Gaming Commission members on November 9, 2026, in the U.S. District Court for the Eastern District of Missouri. The same day, Hanaway filed counterclaims against prediction market exchange Novig, invoking the federal Unlawful Internet Gambling Enforcement Act (UIGEA).

Details

According to Bitcoin.com, Polymarket US argues that the Commodity Exchange Act preempts Missouri's sports-wagering rules and that the state's licensing regime discriminates against out-of-state operators. The complaint notes that new Missouri sports-wagering licenses are available only through in-state casino boats and sports teams. Law360 and RG.org report that Robinhood also sued the state that day, and that Polymarket adds a Commerce Clause claim.

The counterclaim targets Novig's case, which the company filed on October 16, as we reported earlier. Hanaway argues that wagers with unlicensed operators break state law and amount to illegal internet gambling under UIGEA. She also seeks up to $1,000 per violation under Missouri's Merchandising Practices Act, plus restitution and nuisance claims.

Both companies received cease-and-desist letters in September 2026, along with Kalshi, Crypto.com, Underdog and Robinhood. Kalshi filed a similar suit on October 27.

What This Means for the Market

The fight over whether the CFTC or the states regulate sports event contracts is widening: at least five operators are now litigating in Missouri, and the state is answering with a federal gambling statute. The outcome will help decide whether prediction platforms, including those built on crypto rails, can serve residents of states without local licenses. CoinLab uses prediction-market pricing as a sentiment signal in the daily brief. This is not investment advice.