New York Sues Kalshi, Calling Prediction Market An Illegal Gambling Operation

New York's attorney general has filed suit against Kalshi, accusing the New York City–based prediction market of operating an illegal gambling business that exposes residents to financial and personal risk. The complaint asks a court to stop Kalshi's New York operations, require restitution for consumers, forfeit company profits and impose fines equal to three times the revenue Kalshi earned in the state.

What the Lawsuit Alleges

The complaint from Attorney General Letitia James argues that Kalshi functions as a gambling platform rather than a merely informational market. It alleges the company allowed users under New York's legal gambling age of 21 to place bets and that its operations violate state gaming statutes. The suit seeks injunctive relief, consumer restitution, disgorgement of profits and treble fines tied to in-state revenue.

"New York's gambling laws protect children from underage betting and help combat gambling addiction," Attorney General James said. "No matter what they call themselves, prediction markets like Kalshi are gambling platforms, plain and simple."

Kalshi's Response

Kalshi, through spokeswoman Elisabeth Diana, called the lawsuit "political theater" and argued states cannot shut down a federally regulated exchange. The company warned that restricting its U.S. operations could push users offshore and harm New Yorkers who use the platform.

Federal Clash Over Authority

The lawsuit highlights a broader legal battle between states and the Commodity Futures Trading Commission (CFTC). The CFTC contends Congress granted it exclusive jurisdiction over prediction markets and has sued at least nine states, including New York, to block state-level regulation. The agency argues states cannot preemptively close down platforms that fall under federal oversight.

Market Growth And Stakes

Interest in prediction markets has surged since the 2024 U.S. presidential election. The Pew Research Center reports combined monthly global trading volume across Kalshi, Polymarket and similar platforms rose from under $5 billion in September 2025 to about $24 billion by April 2026. For context, Americans wager roughly $14 billion per month on licensed sports-betting sites.

Recent Related Rulings

In a related legal development, a federal judge recently blocked Minnesota from enforcing a new law that would have banned most bets on prediction markets after the CFTC challenged that statute. The decision underscores the unsettled legal landscape and signals protracted litigation ahead.

What Comes Next

The New York case is likely to join or run alongside federal litigation testing whether states can individually regulate or shut down prediction markets that contend they fall under federal oversight. The outcome will shape how prediction markets operate in the U.S., who enforces rules, and what protections exist for consumers, including young users and those at risk of gambling harm.