Utah Calls Kalshi a 'Back-Alley Gambling Den' in New Lawsuit

Utah has filed a lawsuit against prediction market operator Kalshi, describing the platform in court filings as a "back-alley gambling den" and naming Susquehanna-affiliated firms as defendants. The complaint marks the most aggressive state-level legal challenge yet to Kalshi's sports event contracts business.

The filing, submitted in Utah state court, targets Kalshi's offering of event contracts that the state characterizes as unlicensed gambling rather than regulated financial derivatives. Utah maintains some of the strictest anti-gambling laws in the United States, with near-total prohibition on wagering within its borders.

Why does the complaint name Susquehanna?

The inclusion of Susquehanna-affiliated firms signals that Utah intends to reach beyond the exchange operator itself. Susquehanna International Group, the quantitative trading firm, has been a key liquidity provider and investor in the prediction markets sector, and its affiliates have backed Kalshi's market-making infrastructure. Utah's theory appears to be that firms supplying capital and liquidity to the contracts share liability for offering them to state residents.

That approach carries operational consequences well beyond Utah. If a state can attach liability to market makers and investors, every liquidity partner supporting event contracts in restrictive jurisdictions faces exposure. Compliance teams across the sector will now have to weigh state-by-state litigation risk against the revenue those markets generate.

The complaint does not, according to the filing's framing, stop at injunctive relief. The state seeks to bar the contracts from being offered to Utah residents and to pursue penalties under its gambling statutes. What the filing does not yet specify is the full scope of monetary damages sought, a gap worth watching as the case develops.

What does this mean for prediction markets?

The lawsuit lands amid a broader unresolved question: whether event contracts on sports outcomes constitute derivatives regulated by the Commodity Futures Trading Commission, or gambling products governed by state law. Kalshi has operated under CFTC oversight as a designated contract market, a status the company treats as preempting state gambling rules. Utah, evidently, does not agree.

Several states have moved against sports event contracts in recent months, sending cease-and-desist orders to Kalshi and rival platforms. Utah's decision to escalate directly to litigation, and to name Susquehanna entities, raises the stakes considerably. A state court victory would establish a template other attorneys general could replicate.

For Kalshi, the practical risk is market access. Each restrictive state shrinks the addressable audience for its fastest-growing product line. For Susquehanna, the risk is reputational and legal: a quant firm best known for options market-making now faces allegations tying it to what one state calls illegal gambling.

What happens next?

The defendants will have an opportunity to respond, and the jurisdictional fight over whether CFTC registration shields them from state gambling claims will likely define the early procedural battles. Kalshi has previously argued that federal law governs its contracts; whether a Utah judge accepts that argument remains the central open question.

A trial schedule and any preliminary injunction motion should clarify within months whether Kalshi can continue serving Utah residents while the case proceeds. Until then, the complaint stands as the clearest signal that state regulators intend to test the limits of federal preemption in prediction markets.