JPMorgan Chase ended its banking relationship with prediction market platform Polymarket in October 2025 and told the company to find a new lender, with the Financial Times reporting the move on Aug. 15 and Reuters independently confirming it the same evening. Polymarket has since moved its accounts to another bank that was not identified. Regulatory concerns were cited for the decision, while neither the Financial Times nor Reuters reported that any government authority instructed or pressured JPMorgan to act. Even so, the split did not sever broader ties: Polymarket and people close to the company say JPMorgan continues to work with it across multiple entities, operational integrations and customer fund flows, and the bank remains interested in underwriting a potential initial public offering. The episode underscores how compliance risk can shape banking access for crypto-linked and event-contract businesses even as Polymarket expands and pursues fundraising.