Utah Sues Kalshi to Halt Contracts, Recover Profits Amid U.S. Court Split

Key Facts

Utah Attorney General Derek Brown has sued prediction market platform Kalshi, seeking to halt the offering of its contracts in the state and recover its profits, according to local outlet KSL. The demands include a ruling declaring the contracts illegal, along with restitution and damages, making a halt to operations and financial claims the two central elements of the legal action. The coverage attributes allegations of harm to state residents to the lawsuit, claims Utah is advancing as part of its request for court intervention against the platform. The action follows a federal ruling in which Judge Robert Shelby held that federal commodities law does not preempt Utah's authority to prohibit gambling within its borders. In announcing that ruling, the attorney general's office said the state had defeated Kalshi's argument that federal law prevents enforcement of its laws.

Part of the dispute rests on Utah law's definition of gambling, which includes wagers on an individual act, a statistic, or whether an event occurs, according to the federal ruling. That definition brings the nature of the event being wagered on within the law's scope, alongside wagers tied to participants' actions and statistics. Announcing the earlier court victory, Brown said: "Gambling is still gambling, regardless of what any company calls it." The attorney general's position thus links the function of the contracts to enforcement of the gambling ban, challenging Kalshi's insistence on the protection it says federal regulation provides for its activities. The litigation also extends to appeals, with Gary Gensler's brief to the Supreme Court stating that the 10th Circuit also denied the company's request for an injunction pending appeal in the Utah case.

Kalshi filed its preemptive federal lawsuit against Utah officials on February 23, 2026, according to the ruling published through the U.S. Government Publishing Office. That followed the company's launch of contracts on sporting event outcomes in January 2025, the activity at the heart of disputes over enforcement of sports betting laws. Kalshi's designation as a contract market by the Commodity Futures Trading Commission dates to November 3, 2020, according to the commission's record for the organization. The company says on its policies page that trading takes place between users and other participants, and that the platform itself is not their counterparty in those transactions. Kalshi describes its role in the published text: "The platform is neutral, has no interest in the outcome, and you trade with other participants, not with the platform."

At the appeals court level, the 3rd Circuit ruled that the Commodity Futures Trading Commission has exclusive jurisdiction over Kalshi's event contracts, according to the Pennsylvania attorney general's office. The ruling limits states' ability to subject those contracts to their gambling laws, based on the primacy of federal jurisdiction recognized by the court. By contrast, the 6th and 9th Circuit appeals courts reached a different conclusion on states' authority over prediction markets. Both courts allowed states to regulate these markets when the contracts function as gambling, according to the Pennsylvania attorney general's office's account of the rulings. The judicial split thus lies between exclusive federal jurisdiction over event contracts and state authority to regulate contracts that function as wagers.

The dispute between federal oversight and state powers took another course when the Commodity Futures Trading Commission announced on April 28, 2026, that it had sued Wisconsin. The announcement came in a federal proceeding parallel to states' disputes with prediction markets over enforcement of their laws. In the Utah case, Kalshi initiated federal litigation against state officials before Brown announced his action against the platform. In Wisconsin, the federal regulator itself brought the lawsuit against the state, according to the commission's announcement. The legal conflict thus encompasses lawsuits brought by the platform against state officials, action by the federal regulator, and Utah's demand to halt the contracts and obtain damages.

The request to resolve the split is heading to the U.S. Supreme Court after a coalition of states asked it to review the dispute over federal preemption of state sports betting laws. The requested review seeks to resolve conflicting appeals court rulings on who has authority to regulate prediction market contracts. The states said in their brief: "Only this Court can restore order to this national disorder." The request before it is to settle the relationship between the Commodity Futures Trading Commission's jurisdiction and states' powers to enforce gambling laws. For the coalition of states, granting review is the judicial step needed to address the conflicting rulings governing the dispute with Kalshi and prediction markets.