Polymarket US Reaches Stipulation with Michigan Authorities to Halt Sports Event Contracts by November 25 Deadline
Polymarket US agreed to stop sports event contracts in Michigan and close open positions by Nov. 25, 2026, after court losses and state notification. It joins Kalshi, Robinhood, and Coinbase in exiting under Michigan's enforcement push. The company's Sixth Circuit appeal remains pending.
SCCG Take — Michigan's sequenced actions affirm that unlicensed prediction market sports products trigger swift regulatory response. Operators must weigh licensing costs against continued legal risk in similar jurisdictions.
Polymarket US will stop offering new sports-related event contracts to Michigan customers and close out remaining open positions by the end of the day Eastern time on 25 November 2026. The agreement with state officials follows similar steps taken against KalshiEX LLC, Robinhood Derivatives LLC, and Coinbase Financial Markets Inc. this year.
Michigan Gaming Control Board 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.”
Terms of the Court-Approved Stipulation
Under the stipulation approved by the U.S. District Court for the Western District of Michigan, Polymarket US must cease offering the contracts and close any open positions held by Michigan residents that customers have not closed voluntarily by the November 25 deadline. The state agreed not to pursue enforcement action against Polymarket US provided the company remains in compliance.
Litigation Timeline and Pending Appeal
Polymarket US sued state officials in federal court in March 2026 seeking to block enforcement of Michigan gaming laws. The court denied the request for a temporary restraining order in March and the motion for a preliminary injunction in June 2026. The appeal is pending before the Sixth Circuit. On Sept. 10 the Michigan Department of Attorney General notified Polymarket US of planned legal action absent cessation of the contracts.
Attorney General Dana Nessel said: “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.”
As reported by G3 Newswire, Michigan has now secured agreements or court orders against all four platforms. Williams and Nessel reiterated that sports wagering must occur only through licensed operators.
Gaming, betting and prediction markets — the desk’s read, every weekday.
Subscribe →