New York Attorney General Letitia James and Governor Kathy Hochul sued prediction-market platform Kalshi on July 31, 2026 [2].
The lawsuit challenges the legality of prediction markets in the U.S., potentially setting a precedent for how financial regulators and state governments categorize event-based trading.
Filed in New York state court, the legal action alleges that Kalshi is operating an illegal gambling operation [1, 3]. The state said the platform's activities violate New York gambling laws [5, 6]. As part of the filing, the state is seeking an injunction to stop the operations, as well as the forfeiture of gains, and restitution [1, 3].
Some reports indicate the state is seeking damages as high as $36 billion [1], though other accounts of the filing refer more generally to the recovery of gains [1, 3].
Additional allegations in the suit suggest that Kalshi targeted users under the age of 21 [4], which would further constitute a violation of state gambling regulations [4].
This legal move follows a separate development earlier in July 2026, when a federal judge denied an attempt by Kalshi to intervene in a related matter [3].
The state's pursuit of an injunction could force the platform to cease its services for New York residents while the court determines if the platform's model constitutes a regulated financial product or an illegal bet [1, 3].
“New York is seeking an injunction, forfeiture of gains, and restitution.”
This lawsuit represents a significant escalation in the tension between emerging prediction-market platforms and traditional state gambling laws. By framing event-trading as illegal gambling rather than financial speculation, New York is attempting to assert state-level jurisdiction over digital markets that often claim to operate under federal regulatory frameworks. A victory for the state could lead to a fragmented regulatory landscape where prediction markets are banned in some U.S. states while remaining legal in others.
