New York State filed a lawsuit against prediction market platform Kalshi on Friday, alleging the company is operating an illegal gambling business without the necessary state license. The suit, submitted by Attorney General Letitia James in Manhattan state court, accuses Kalshi of offering gambling products to New Yorkers, including individuals aged 18 to 20, thereby exposing consumers to financial harm and evading taxes and regulatory requirements imposed on licensed sportsbooks.

Kalshi, which launched in 2021 and has gained popularity as a platform where users can place “Yes” or “No” bets on a wide range of outcomes—including sports events, elections, and news developments—has been valued at $22 billion with an annual transaction volume estimated at $178 billion. New York officials contend that Kalshi’s operations violate state gaming laws designed to protect consumers, generate public revenue, and prevent gambling-related harm. The lawsuit highlights concerns about increased risks of gambling addiction, particularly among young adults aged 18 to 24, and cites studies linking gambling disorders to serious social problems such as suicide and intimate partner violence.

Governor Kathy Hochul and Attorney General James criticized Kalshi for ignoring state laws by not obtaining a license from the New York State Gaming Commission. The legal action seeks to halt Kalshi’s unlicensed offerings, recover all profits the company has made in New York, compensate affected users, and impose penalties of $100,000 for each unauthorized wager on sports events. The suit also requests detailed accounting of bets placed and funds lost by customers.

Kalshi, through spokeswoman Elisabeth Diana, rejected the allegations, arguing that it operates as a federally regulated exchange overseen by the Commodity Futures Trading Commission (CFTC), which grants it authority beyond state jurisdiction. Diana characterized the lawsuit as political theater and warned that shutting down Kalshi would push New Yorkers to offshore platforms. She emphasized the company’s commitment to serving New York customers and disputed claims that it harms consumers.

The CFTC, the federal agency regulating Kalshi, also responded on Friday by seeking a temporary restraining order to block enforcement actions by New York. Chairman Mike Selig, a Trump administration appointee, criticized the state’s lawsuit on social media, stating that New York is attempting an unprecedented shutdown of prediction markets nationwide and asserting the agency’s intent to defend its authority.

The legal dispute comes amid a broader debate over the classification and regulation of prediction markets, which some critics equate with gambling platforms. The lawsuit referenced concerns about insider trading and other risks, noting a separate federal prosecution involving bets placed on Polymarket, a rival prediction market company. Meanwhile, Kalshi’s CEO maintains that such markets democratize financial opportunities by allowing everyday individuals to participate in event-based trading akin to Wall Street.

As the lawsuit proceeds, it underscores the tension between state regulatory efforts and emerging federally regulated platforms in the rapidly evolving online betting and prediction market space. The case also reflects ongoing challenges related to consumer protection, taxation, and jurisdictional authority over new forms of wagering technology.