Louisiana sues Kalshi, Robinhood, Polymarket and other prediction market firms in state court, asking for an immediate restraining order

Louisiana Attorney General Liz Murrill announced on Thursday that the state has sued Kalshi, Robinhood, Polymarket and other prediction market companies in state court. In a post on X she said the platforms have "violated our laws with impunity," and the suit asks for an immediate restraining order and an injunction.

KSLA reported that the state accuses the companies of running illegal online gambling through event contracts tied to sports, awards and elections. KSLA named Kalshi, Polymarket, Robinhood, Coinbase and Gemini among the defendants. The Block listed ten: those five plus ForecastEx, Crypto.com, Novig, Underdog and ProphetX. The Block counted Louisiana as the 11th state to sue one or more prediction markets.

The companies are already fighting back. Kalshi sued Louisiana officials, including Murrill and Gov. Jeff Landry, last month to block enforcement of the state's gambling laws against it, KSLA reported, and The Block said it has now filed for an emergency temporary restraining order. A Robinhood spokesperson told The Block its event contracts are federally regulated by the CFTC and offered through Robinhood Derivatives, LLC, a CFTC-registered entity.

The Block noted that the CFTC has sued states to claim exclusive jurisdiction over prediction markets and that the dispute could reach the Supreme Court.