Polymarket US Agrees to Halt Sports-Related Event Contracts in Michigan by November 2026

Polymarket US has agreed to stop offering sports-related event contracts to Michigan customers and close out any remaining open positions by the end of the day Eastern time on 25 November 2026. The Michigan Gaming Control Board announced the agreement with QCX LLC, doing business as Polymarket US, as the latest step targeting unlicensed sports wagering products framed as prediction markets.

The deal follows similar agreements with Coinbase Financial Markets, Robinhood Derivatives, and a preliminary injunction against KalshiEX. It comes after Polymarket US sued state officials in federal court in March 2026 to block enforcement of Michigan gaming laws. The U.S. District Court for the Western District of Michigan denied a temporary restraining order in March and a preliminary injunction in June 2026, with the appeal now pending before the Sixth Circuit. The Michigan Department of Attorney General notified the company it would pursue legal action absent compliance.

Agreement Terms and Court Approval

Under the stipulation approved by the U.S. District Court for the Western District of Michigan, Polymarket US must cease new sports-related event contracts in the state. Michigan has agreed not to take enforcement action against the company provided it remains in compliance. As first reported by G3 Newswire, MGCB Executive Director Henry Williams said: “Polymarket joining Kalshi, Robinhood, and Coinbase in stepping back from these unlicensed sports contracts shows that Michigan’s approach is working. We expect all operators to respect Michigan’s regulatory framework. If you want to offer sports wagering to Michigan residents, you need a Michigan license.”

Attorney General Dana Nessel stated: “One by one, from Kalshi to Robinhood and Coinbase, and this latest agreement with Polymarket, we’re holding the national sports betting industry accountable to Michigan law. Alongside the MGCB, we’re protecting Michigan residents by ensuring gaming in our state occurs in licensed and regulated ways, and under the protections and safeguards afforded by the law.”

Michigan's Enforcement Momentum

The state has now secured agreements or court orders against Kalshi, Robinhood, Coinbase, and Polymarket. The joint efforts of the Attorney General’s office and the Michigan Gaming Control Board direct all sports wagering into properly licensed channels. This progression of actions makes clear that platforms must secure Michigan licenses to operate lawfully in the state.