Robinhood files suit as Washington moves against prediction markets

Summary

Robinhood has filed a lawsuit in the US District Court for the Western District of Washington challenging actions by Washington state officials, including the Washington State Gambling Commission and the state attorney general. The company says state attempts to classify trading in event contracts as illegal gambling conflict with federal regulation and threaten its ability to route trades through federally regulated exchanges such as Kalshi and ForecastEx.

Robinhood argues that Congress has created an exclusive, comprehensive regulatory framework for derivatives and event contracts under the Commodity Exchange Act, and that Washington’s enforcement would be pre-empted by federal law. The complaint warns state-level restrictions would fragment a national market, reduce liquidity and could force platforms to close customer positions at unfavourable prices.

The filing echoes prior and parallel litigation involving Kalshi — including Washington’s recent action against Kalshi — and ongoing cases in Massachusetts and New Jersey. The outcome of KalshiEx LLC v. Flaherty before the Third Circuit is expected to be influential for related disputes.

Key Points

Robinhood sued Washington state officials over attempts to treat event contracts as illegal gambling.
The company says event contracts are covered by federal regulation (Commodity Exchange Act) and that state rules are pre-empted.
Robinhood routes trades through exchanges such as Kalshi and ForecastEx, making it vulnerable to the same state actions.
Company warns state bans would fragment a nationally uniform market and harm liquidity and traders’ access.
Similar legal fights are active in Massachusetts, New Jersey and in appeals involving Kalshi; a Third Circuit decision is particularly important.
The dispute highlights the wider tension between financial innovation (binary/event contracts) and state gambling laws.

Why should I read this?

Short version: this isn’t just another lawsuit. If states win the right to treat federally regulated event contracts as gambling, platforms could be blocked or forced to stop trades in parts of the US — that means less market access, choppier liquidity and headaches for traders and firms alike. If you follow prediction markets, fintech regulation or platform risk, it’s worth a quick read — we’ve saved you the digging.