The US Commodity Futures Trading Commission (CFTC) filed a lawsuit against the state of Utah on October 27, 2026, seeking to prevent Utah from enforcing its gambling laws against prediction markets operating under federal jurisdiction (CFTC, The Block).

For prediction exchange operators such as Kalshi, the dispute reaches well beyond Utah's statutes. Prediction markets are venues where traders buy and sell event contracts that pay out based on the outcome of real-world events, and the central question in the case is whether such platforms can function under a single set of federal regulations or must instead comply with the gambling laws of every individual state.

Two lawsuits pointing in opposite directions

The CFTC's action comes one week after Utah Attorney General Derek Brown sued five entities owned by Kalshi and Susquehanna on October 20, 2026, over the alleged facilitation of illegal gambling. The state is seeking an injunction, along with restoration of losses and various fees estimated at between $30.6 million and $61.2 million. According to Cryptopolitan, naming Susquehanna broadens the legal battle to the market makers, the providers of liquidity and trades.

Kalshi maintains that its contracts are derivatives regulated under federal jurisdiction under the Commodity Exchange Act. Utah argues that the Act still leaves room for state gambling laws. The CFTC's new case elevates that disagreement into a direct federal-state showdown. By suing a state government rather than waiting for enforcement actions to play out, the commission is asking federal courts to settle the jurisdictional question in one move instead of leaving operators to litigate it state by state.

An August ruling and pushback from 44 states

The federal argument has already faced setbacks in court. On August 4, a federal judge in Utah ruled that the Act does not prevent states from enforcing their own laws (court document). Appellate courts have reached divergent outcomes: the Third Circuit backed Kalshi in the New Jersey case, the Ninth Circuit sided with Nevada, and the Sixth Circuit ruled for Ohio and Tennessee.

Opposition has not been confined to the courts. In July, 44 state attorneys general contested the CFTC's authority over sports-related contracts in a letter. On October 9, 2026, the agency proposed classifying certain event contracts as swaps, a rule that is not yet final. The classification matters because swaps are instruments the CFTC already regulates, so a final rule would place the covered contracts within the agency's existing oversight framework.

The CFTC is also suing states directly. Utah is the tenth state it has filed suit against, following Arizona, Connecticut, Illinois, New York, Wisconsin, Minnesota, Rhode Island, New Mexico, and Kentucky.

What a $419.1 billion business stands to lose

The financial stakes are considerable. Artemis reports that prediction markets registered trading volume of $419.1 billion in the year up to October 27, 2026. Sports contracts took the top share at $173.6 billion (41.4%), followed by exotics at $149.3 billion and crypto at $60.3 billion (Artemis). The mix intersects directly with the legal fight: sports-related contracts are precisely the category the 44 state attorneys general singled out in their July letter.

Kalshi has plenty riding on sports contracts. Reuters reported the company's valuation at roughly $40 billion, while CEO Tarek Mansour said sports still account for nearly 65% of its revenue, down from around 95% nine months earlier (Reuters). That share remains well above the market's 41.4% sports weighting by volume, a measure of how much of Kalshi's business depends on the contract type at the center of the state challenges.

A patchwork of state rules could make these contracts more expensive to offer or restrict access in certain markets. Legal pressure on liquidity providers could also widen trading spreads and reduce market activity. So far, however, there is no evidence that Susquehanna has withdrawn from Kalshi.

Europe restricts, Asia hesitates

The US is not alone in trying to draw the line between financial trading and gambling. In July, ESMA warned that event contracts classified as derivatives fall under existing retail binary-option bans. Firms distributing these products also need authorization as investment firms, while national gambling laws may still apply (ESMA).

Asia faces a similar challenge. Tiger Research warns that restrictive regulation could drive trading activity offshore and leave users without adequate protection, even as major technology companies show growing interest in prediction markets (Tiger Research).

The road to the Supreme Court

Mansour told Reuters the dispute could reach the Supreme Court and expressed confidence in Kalshi's position. But it was New Jersey — not Kalshi — that petitioned the justices after losing in the Third Circuit. The Court has not agreed to hear the case (docket). A split of this kind is the setting in which the Supreme Court typically resolves conflicting appellate rulings on federal law, since only the justices can replace them with a single national rule.

For now, attention turns to Utah's federal lawsuit, Kalshi's appeal, and the CFTC's pending swaps proposal.