Connecticut Federal Court Denies Kalshi’s Bid to Block State Gambling Enforcement

A federal judge in Connecticut has dealt Kalshi another courtroom setback, denying the prediction market operator’s request for a preliminary injunction against the state’s gambling regulators. The ruling clears a path for Connecticut officials to move forward with enforcement action against Kalshi’s sports event contracts, though it does not guarantee that enforcement will happen immediately.

U.S. District Court Judge Vernon D. Oliver issued the decision, finding that Kalshi’s sports-event contracts do not meet the legal definition of a “swap” under the Commodity Exchange Act. That distinction matters because the CEA gives the Commodity Futures Trading Commission exclusive jurisdiction over derivatives classified as swaps — a classification Kalshi has leaned on throughout its national legal fight to argue that federal law shields it from state gambling laws.

Why the Swap Classification Was the Whole Case

In his ruling, Judge Oliver wrote that “Kalshi’s sports-event contracts fail to satisfy this portion of the statutory definition of a swap because they do not depend on whether an underlying sporting event occurs, fails to occur, or occurs to a particular extent.” Instead, he found the contracts hinge on “the event’s outcomes or discrete in-game occurrences,” which he said falls outside the ordinary meaning of the term under the statute.

That finding alone would have been enough to sink Kalshi’s request. But Oliver went further, ruling that even if the contracts were properly classified as swaps, Connecticut’s gambling laws still would not be preempted by the CEA. He wrote that the court would not conclude “that Congress clearly displaced Connecticut’s traditional authority to regulate sports wagering and vested that authority in the CFTC, an agency that has not historically regulated sports wagering and has not exercised meaningful oversight over Kalshi’s sports event contracts.” Judge Oliver also rejected Kalshi’s argument that it would suffer irreparable harm without an injunction, or that its users would be harmed by the removal of sports-related contracts.

In a related order issued the same day, the court denied a similar preliminary injunction motion from Coinbase, which had joined the fight against Connecticut’s enforcement push on largely the same legal grounds.

How the Case Got Here

The dispute traces back to early December, when Connecticut’s Department of Consumer Protection sent cease-and-desist letters to Kalshi, Robinhood, and Crypto.com, ordering all three to stop offering what the state classified as unlicensed sports betting. DCP Commissioner Bryan T. Cafferelli said at the time that “none of these entities possess a license to offer wagering in our state, and even if they did, their contracts violate numerous other state laws and policies.”

Kalshi responded by suing the department and its director, Kristofer Gilman, arguing that its event contracts are federally regulated derivatives — not gambling products — and that Connecticut’s enforcement effort was preempted by federal oversight of designated exchanges. A federal judge initially paused enforcement while the injunction request was litigated, but Monday’s ruling reopens the door for the state to act.

A Kalshi spokesperson said the company “respectfully disagree[s] with the Court’s decision and are considering all legal options” going forward, signaling the fight in Connecticut is not over even with the injunction denied.

Part of a Bigger Legal Pattern

Monday’s decision is the latest in a string of losses for Kalshi’s sports-contract business across multiple states. The company has also had injunction requests denied in other jurisdictions in recent weeks, and New York separately announced last week that it is suing Kalshi over alleged violations of the state’s gambling laws. Taken together, the rulings suggest that federal courts are increasingly skeptical of the argument that CFTC oversight of derivatives markets automatically shields sports-outcome contracts from state-level sports wagering regulation.

The outcome in Connecticut won’t immediately shut down Kalshi’s sports contracts in the state — enforcement is now merely possible rather than mandated — but it strips away one of the company’s key legal shields as similar battles continue to play out in courtrooms nationwide. For bettors following the broader Connecticut sportsbooks landscape, the case is a reminder that prediction markets remain in a legal gray area that traditional, licensed operators do not share.

Kalshi’s core argument has been consistent across every state where it has faced pushback: as a CFTC-designated contract market, its event contracts are federally regulated derivatives that fall entirely outside the reach of state gambling statutes. The company has framed its platform as a place where users trade contracts tied to real-world outcomes rather than place traditional wagers, and has argued that forcing it to geo-fence individual states would cause immediate, irreparable harm to its business and users. Connecticut regulators have rejected that framing outright, insisting that a prediction market wager tied to a sporting event is functionally indistinguishable from a sports bet, regardless of how the contract is labeled or where it is cleared.

That disagreement is exactly what Judge Oliver was asked to resolve on a preliminary basis, and his ruling came down squarely on the state’s side. With the injunction denied, Connecticut’s Department of Consumer Protection is now free to pursue the enforcement path it outlined in its cease-and-desist letters, though nothing in the ruling requires the state to act on a particular timeline. The underlying lawsuit between Kalshi and the department remains active, meaning Monday’s decision settles only the preliminary injunction question rather than the case as a whole.

For sportsbooks and casino operators that hold state licenses and comply with local wagering rules, rulings like this one carry real competitive weight. Every dollar wagered through an unlicensed prediction market is a dollar that bypasses the consumer protections, age verification, and tax obligations built into licensed sports betting markets. As more states challenge Kalshi’s model in court, outcomes in Connecticut, New York, and elsewhere will likely shape how aggressively other regulators move against similar sports-outcome contracts.