The State of New York sued prediction-market operator Kalshi on Friday, July 31, alleging the company runs an illegal, unlicensed gambling operation [1].
The lawsuit represents a significant escalation in the regulatory battle over whether prediction markets—platforms where users bet on the outcome of real-world events—function as financial instruments or unauthorized gambling. If the court rules against Kalshi, it could set a precedent that limits how these platforms operate across the U.S.
New York's Attorney General's office filed the action in a New York State court [1, 2]. The state said that Kalshi's prediction-market contracts constitute illegal gambling and that the company has operated without the required gambling license in the state [1, 4].
Through the filing, the state is seeking to halt Kalshi's prediction-market services and seize the company's profits [1, 3]. Additionally, the lawsuit seeks a penalty of $36 billion [5].
Kalshi has faced mounting legal challenges regarding the nature of its services. The current action by New York follows a series of disputes over whether such markets are regulated by the Commodity Futures Trading Commission or fall under state-level gambling laws [3].
The state's legal team said that the platform enables illegal gambling by allowing users to speculate on event outcomes without proper oversight. The lawsuit aims to shut down these operations within the state's borders to ensure compliance with local gaming statutes [1, 2].
“The state seeks to halt prediction-market services and recover profits.”
This legal action highlights a growing tension between emerging fintech platforms and traditional state gambling laws. By seeking a massive financial penalty and a complete shutdown of services, New York is attempting to define prediction markets as gambling rather than financial hedging. The outcome will likely determine whether these platforms can continue to scale in the U.S. or if they must obtain individual gaming licenses in every state where they have users.



