Utah has taken an unusually aggressive step against one of America’s fastest-growing financial technology companies, filing criminal charges against prediction-market operator Kalshi and its two co-founders, Tarek Mansour and Luana Lopes Lara. The case is part of a widening confrontation over whether platforms that allow people to trade on the outcomes of sporting events, elections and political developments are operating legitimate financial exchanges or disguising online gambling behind the language of financial markets.
The charges, filed on October 28, 2026, put the company’s leadership directly in the middle of a legal battle that could have consequences far beyond Utah. Prosecutors accuse Kalshi of promoting illegal gambling by allowing state residents to put money on sporting outcomes through its online platform, despite Utah’s strict prohibition on gambling. The prosecution includes one count of participating in a pattern of unlawful activity, 12 counts of online gambling promotion and one count of general gambling promotion. The felony allegations carry the possibility of prison sentences if the individuals are convicted.
At the centre of the case are two young entrepreneurs who built a multibillion-dollar business from an idea developed while studying at the Massachusetts Institute of Technology (MIT). Mansour, 30, is Kalshi’s co-founder and chief executive officer, while Luana Lopes Lara, also 30, serves as co-founder and chief operating officer. Mansour was born in California and grew up in Lebanon before moving to the United States for his education. He graduated from MIT with degrees in computer science and mathematics and a master’s in engineering. Before establishing Kalshi, he worked at Goldman Sachs and Citadel, gaining experience in quantitative trading and financial markets.
Lopes Lara, originally from Brazil, followed a considerably different path into finance. She trained in classical ballet at an academy affiliated with the Bolshoi Theatre and subsequently performed professionally in Austria. She later studied computer science and mathematics at MIT, where she met Mansour. Her professional experience includes positions at Bridgewater Associates, Citadel and Five Rings Capital. Together, the pair established Kalshi in 2018, aiming to create a regulated marketplace where users could trade contracts based on the outcome of real-world events. Both founders are publicly associated with New York, where the company is based.
Kalshi’s business model is built around what the financial industry calls event contracts. In straightforward terms, a customer takes a position on whether a particular event will happen. A contract might concern whether a political candidate wins an election, whether the Federal Reserve changes interest rates or whether a particular sports team wins a match. Depending on the market, the customer can buy a position predicting either outcome and potentially make money if the prediction is correct. Kalshi collects transaction fees rather than simply taking the losing side of every trade. The company argues that these products are financial derivatives, not conventional sports bets, and therefore belong under federal commodities regulation.
That argument has helped Kalshi attract substantial institutional backing. The company received approval to operate as a designated contract market from the Commodity Futures Trading Commission (CFTC) in 2020. In 2024, it also secured a significant legal victory allowing it to offer contracts tied to the outcome of US congressional elections. Its growth accelerated as prediction markets gained attention during the 2024 presidential election. In May 2026, Kalshi announced a $1 billion funding round led by Coatue, with participation from Sequoia Capital, Andreessen Horowitz, Morgan Stanley, Paradigm and ARK Invest. The investment valued the company at approximately $22 billion.
However, federal registration has not ended the controversy. State gambling regulators have increasingly challenged the company’s expansion into sports-related contracts, arguing that a financial label does not automatically transform a wager into a legitimate investment product. Utah has become one of the most prominent opponents, particularly because its constitution and state laws prohibit gambling.
The dispute escalated in February 2026, when Kalshi filed a federal lawsuit against Utah Governor Spencer Cox and Attorney General Derek Brown, seeking to prevent state officials from enforcing gambling restrictions against its platform. Kalshi argued that the federal Commodity Exchange Act gives the CFTC authority over its contracts and prevents individual states from independently regulating them as gambling. The state rejected that interpretation.
On August 4, US District Judge Robert J. Shelby ruled in Utah’s favour. His decision concluded that the Commodity Exchange Act did not prevent Utah from enforcing its gambling laws against Kalshi. The court granted summary judgment to state officials, rejecting the company’s central argument that federal regulation automatically displaced state authority. Kalshi subsequently sought protection while appealing, but the Tenth Circuit Court of Appeals refused to grant an injunction on September 8. The appeal itself remained unresolved.
Utah’s criminal case followed a series of steps by state investigators. According to the probable-cause affidavit described in local reporting, an investigator from the Attorney General’s Office, Scott Eggerman, opened an undercover Kalshi account on September 13, 2026. The account used a Utah residential address, a local telephone number and a debit card connected to a Utah banking institution. The investigator also used location services to establish that he was physically in the state.
Over the following days, the investigator placed 12 wagers on sporting events, including NFL games, college football, baseball, soccer and hockey. One transaction involved predicting whether the University of Utah would beat Utah State by more than 27.5 points. Utah ultimately won by 36 points, and the investigator received a reported payout of $4.13 on that position. Across all 12 transactions, the investigator risked approximately $114.87 and lost $25.10. Kalshi reportedly collected transaction fees ranging from three cents to 78 cents on individual trades.
The state argues that these transactions demonstrate that Kalshi was offering gambling services to Utah residents rather than merely facilitating financial investments. Prosecutors also allege that the company generated revenue from the transactions and that its founders maintained interests in or control over an enterprise benefiting from the activity. The charging documents identify Mansour and Lopes Lara individually, making this more than a regulatory dispute involving the company alone. Both founders were issued summonses to respond to the charges rather than being arrested under warrants. No conviction has been reported.
The criminal prosecution is only one part of Utah’s campaign. On October 20, Attorney General Brown filed a separate civil lawsuit against Kalshi and several related businesses. The defendants named include Kalshi Inc., KalshiEX LLC, Kalshi Klear Inc., Kalshi Klear LLC and Kalshi Trading LLC. The complaint also names Susquehanna International Group and Susquehanna Government Products, two trading firms that Utah alleges participated in the market-making side of the transactions. The state claims these businesses helped facilitate the trading system by providing liquidity and taking positions opposite customers.
The financial figures in that civil complaint are substantial. Utah estimates that Kalshi generated between $30.6 million and $61.2 million in fees from accounts associated with the state between February 2026 and October 19. Separate reporting on the lawsuit puts the estimated profits from users’ losing positions at approximately $5.5 million. These figures are the state’s estimates, not amounts established by a court judgment. Utah is seeking to stop the allegedly unlawful activity and recover money through restitution, damages and other remedies. No final damages award or disgorgement order has been issued.
Kalshi has strongly rejected the state’s position. Following the criminal charges, a company spokesperson described the prosecution as a “crazy overreach” and accused Utah of playing politics. The company said it intended to challenge the charges in court, pointing to its earlier success in blocking Arizona’s prosecution. Utah Attorney General Derek Brown has taken the opposite position, arguing that federal registration does not exempt a business from state gambling laws. He maintains that the company continued accepting bets after a federal judge had already ruled that Utah could enforce its restrictions.
The Arizona reference is particularly important. Arizona prosecutors previously brought 20 misdemeanor charges against Kalshi over alleged unlawful wagering on political outcomes, college sports and individual player performances. A federal judge subsequently granted Kalshi temporary protection, pausing the prosecution while the broader federal jurisdiction question was considered. The contrasting legal developments in Arizona and Utah illustrate why the prediction-market industry faces such an uncertain regulatory environment.
The federal government has now entered the Utah dispute directly. On October 26, the United States and the CFTC filed a lawsuit against Utah, arguing that the state’s actions interfere with federal authority over designated contract markets. The CFTC maintains that Congress entrusted it with responsibility for overseeing commodity derivatives and that states cannot independently shut down federally regulated exchanges by applying their gambling laws to those contracts. Chairman Michael S. Selig has publicly defended the agency’s jurisdiction, describing event contracts as instruments that can provide useful information about future events as well as financial hedging opportunities. The federal lawsuit is separate from the criminal prosecution: Kalshi is not itself a plaintiff in that federal action.
The conflict continued into November. The federal government and CFTC sought emergency relief to prevent Utah from pursuing enforcement actions involving contracts listed on federally regulated exchanges. On October 30, Judge Shelby scheduled an in-person status and scheduling conference for November 6. As of November 4, the available reporting does not establish that the requested temporary restraining order has been granted. The criminal case and Utah’s civil lawsuit therefore remain separate proceedings, with the wider jurisdictional dispute still unresolved.
Kalshi has not been found guilty of fraud, financial deception or operating a criminal gambling enterprise in these proceedings. The Utah allegations concern the legality of its event contracts under state gambling statutes, and the founders have not been reported to have pleaded guilty or admitted wrongdoing. Nor has a court ordered the company to pay the estimated Utah-related amounts. The distinction matters because a company can be federally registered and still face a dispute over the limits of its activities under state law.
What makes this case important is the question it raises about the future of financial innovation and consumer protection. Prediction markets are expanding into areas traditionally associated with bookmakers, stock exchanges and financial derivatives, often attracting customers who may not fully understand the risks involved. If states can regulate these products as gambling, companies operating nationally could face a complicated patchwork of restrictions. If federal regulators prevail, state authorities may lose significant control over products they believe expose residents to gambling-related harm. For investors, customers and the public, the outcome will help determine who is ultimately accountable when a rapidly growing financial platform operates across state boundaries. Kalshi’s future may depend not simply on how accurately its users predict events, but on whether American law considers those predictions financial contracts or bets.
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