Polymarket to stop offering sports event contracts in Michigan from November 25 after MGCB action
Michigan regulators say Polymarket will end its sports event contracts in the state by the end of November 25, 2026. The move follows similar withdrawals by Robinhood and Coinbase and a court injunction against Kalshi.
GamblingCryptoSource: GamblingNews
The Michigan Gaming Control Board has announced that Polymarket will stop offering sports event contracts to users in the state by the end of the day on November 25, 2026. The regulator has described the outcome as a significant win in its campaign against the platform, which it had accused of operating in breach of Michigan gambling law.
The board's position has been reinforced in court. It obtained a preliminary injunction against another prediction market operator, Kalshi, a ruling that has given it a basis to continue pressing other companies offering comparable products in the state.
Other platforms have already changed course. Robinhood agreed to withdraw first, with the source citing September 9 for its agreement and October 9 as the date it closed trading in sports event contracts. Coinbase also agreed to stop and ceased offering the contracts on October 10.
Michigan Attorney General Dana Nessel commented on the sequence of developments. "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," she said. She added that, working alongside the MGCB, her office aims to protect residents by making sure gaming in the state takes place in licensed and regulated ways, with the safeguards the law provides.
According to the report, Polymarket US had tried to prevent the state from applying its gaming laws but was ultimately unsuccessful in making its case. The company will now comply with the result of several court decisions, among them the Sixth Circuit ruling, which upheld the decision of the lower court.
The development adds to the ongoing legal tension between state gaming regulators and prediction market platforms over whether sports-related event contracts fall under state gambling rules. In Michigan, the regulator's approach has so far produced either court-backed restrictions or voluntary withdrawals from each of the companies named.
Based on reporting by GamblingNews.