Kalshi Faces Supreme Court Battle as Utah Joins States in Legal Crackdown

Utah authorities are seeking to bar Kalshi from operating within the state, marking the latest legal challenge against the prediction market platform. The company's co-founder, Tarek Mansour, indicated that the broader regulatory fight over his business could reach the U.S. Supreme Court.

Utah Attorney General Derek Brown filed a lawsuit Tuesday in state court, alleging that Kalshi operates as "the manager of a back-alley gambling den" in a state where gambling is illegal. The suit contends that Kalshi has demonstrated a "brazen pattern of unlawful conduct" and seeks to recover millions in profits made on Utah residents.

Kalshi, which allows users to wager on a wide range of real-world events—from political outcomes and financial markets to cultural events and weather patterns—argues that its contracts are financial "swaps" regulated by the federal Commodities Futures Trading Commission (CFTC). The company asserts that this federal oversight preempts state-level prohibitions.

However, several states, including New York and Nevada, have also pursued legal action against Kalshi and similar prediction market companies, aiming to prevent them from offering services within their jurisdictions. This trend has been further amplified by a recent ruling from a U.S. appeals court, which determined that states like Ohio and Tennessee have the authority to regulate Kalshi's event contracts under their gambling laws. This decision represents a significant setback for the prediction market industry.

A spokesperson for Kalshi stated, "Kalshi is a federally regulated financial exchange, like the stock market. Our customers trade with each other and set the prices. As a national derivatives market overseen by the CFTC, Kalshi answers to federal law, and no single state should have a veto over it. This latest state court action does not affect our ongoing federal litigation."

The legal complexities extend to a previous case where New Jersey's request for a Supreme Court review followed Kalshi's success in an appellate court.

Speaking on a Reuters podcast, Mansour expressed confidence in his company's legal standing, noting, "Frankly, the statute and the structure is very, very clear... whether people think a sports game is a game, this commodities exchange act gave the CFTC the authority to decide what to do with the game, and to regulate it the way it sees fit, and that’s what it’s doing."

Despite these legal hurdles, Kalshi has continued to attract significant investment, raising a total of $2.6 billion and reportedly seeking further financing that could value the company at $40 billion. Investors have voiced optimism that Kalshi can prevail in some of the legal challenges, viewing its business model as resilient.

Utah's lawsuit names four of Kalshi's subsidiaries and two Pennsylvania-based trading firms that provide pricing and liquidity for the platform. Utah's Attorney General's office clarified that the suit does not target individual Utah residents with verified Kalshi accounts.

The complaint alleges that Kalshi is aware of Utah's ban on gambling but continues to operate as a gambling provider by acting as the market maker, facilitating bets, and retaining a portion of each wager. The suit describes Kalshi's operation as administering a "closed-loop wagering system."

Initially, Kalshi focused on wagers tied to traditional financial instruments. However, by 2024, as prediction markets gained mainstream attention, the company began offering sports trading and explicitly referencing wagers on professional sports. Utah's legal filing argues this shift undermines any distinction between Kalshi's activities and gambling.

Data from a source close to the company indicates that sports betting accounts for approximately 70% of Kalshi's estimated $4 billion in revenue for the twelve months concluding in July.