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Breaking: Polymarket Lawsuit Could Decide Who Regulates US Prediction Markets (Cointelegraph)

created: Feb 19, 2026, 06:30 PM
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A lawsuit involving Polymarket challenges state authority and could redefine whether the CFTC controls US prediction markets, or whether states set their own rules. The dispute centers on whether event contracts qualify as financial derivatives or gambling. A ruling in favor of Polymarket could establish uniform national oversight and prevent differing state regulations.

A federal lawsuit filed by Polymarket against Massachusetts could determine whether prediction markets are regulated solely by the CFTC or also by individual states. The lawsuit was filed in response to state-level actions against platforms like Kalshi, with Massachusetts and Nevada moving to restrict sports-related prediction contracts. Polymarket argues that Congress has granted exclusive authority over event contracts to the CFTC, making state efforts to regulate its operations unlawful. Polymarket's chief legal officer, Neal Kumar, contends that the legal questions should be resolved in federal court to avoid hindering industry development through piecemeal enforcement by individual states. The lawsuit came after Massachusetts courts acted against Kalshi, blocking sports-related contracts under state gambling laws. A judge upheld a preliminary injunction requiring Kalshi to prevent residents from accessing certain markets without a gaming license, treating these markets as unlicensed sports wagers. Key takeaways:

  • The Polymarket lawsuit challenges state authority over prediction markets.
  • The case could determine whether the CFTC has exclusive regulatory control.
  • The lawsuit follows state-level actions against platforms like Kalshi.
  • A ruling for Polymarket could establish uniform national oversight.