Meta description: Connecticut sued Kalshi after a federal judge rejected preliminary relief in its sports-event contract fight with state regulators.
Tags: Kalshi, Connecticut, CFTC, William Tong, Bryan Cafferelli, sports contracts
market_platform: Kalshi
category: Regulation
Connecticut sued Kalshi on August 26, 2026, opening a new state-court front over whether sports-event contracts can be offered to residents without a Connecticut gambling license. Attorney General William Tong and Consumer Protection Commissioner Bryan Cafferelli said the state is seeking an injunction after Kalshi lost a preliminary-injunction fight in federal district court.
What does Connecticut’s lawsuit against Kalshi allege?
Tong and Cafferelli announced on August 26, 2026, that Connecticut had sued KalshiEX LLC, asking a court to stop the company from offering sports wagering in Connecticut without a state license. Tong’s office said the lawsuit targets Kalshi’s sports-event contracts, which Connecticut regulators treat as illegal gambling under state law.
The state’s claim is that Kalshi is offering sports wagers to Connecticut customers without complying with the licensing, minimum-age and consumer-protection rules that apply to regulated sportsbooks. In the August 26 announcement, Tong’s office said Kalshi lets users stake money on sports outcomes while describing the products as financial contracts.
Connecticut regulators have also challenged the age rules around those products. In its December 3, 2025 public announcement, the Department of Consumer Protection said it had issued cease-and-desist orders to Kalshi, Robinhood and Crypto.com for offering what the agency described as illegal sports wagers to individuals under 21. Connecticut’s legal sports-wagering framework is limited to adults 21 and older.
Gaming Director Kristofer Gilman framed the issue in consumer-protection terms when the Department of Consumer Protection announced the December 2025 orders. “These platforms are deceptively advertising that their services are legal, but our laws are clear,” Gilman said in the agency’s announcement.
The lawsuit adds a state-court case to a dispute Kalshi has already been fighting in federal court. The central question is whether federally regulated event contracts listed on a CFTC-registered exchange can be stopped by state gambling officials when the contracts are tied to sports outcomes.
How did the federal injunction fight unfold?
The Connecticut Department of Consumer Protection announced on December 3, 2025, that it had issued cease-and-desist orders to Kalshi, Robinhood and Crypto.com, directing the companies to stop offering what the agency described as unlicensed online gambling. Commissioner Bryan Cafferelli said in that announcement that “only licensed entities may offer sports wagering in the state of Connecticut.”
Kalshi sued Connecticut officials on December 3, 2025, in the U.S. District Court for the District of Connecticut, KalshiEX LLC v. Connecticut Department of Consumer Protection, No. 3:25-cv-02016. The company argued that Connecticut’s enforcement effort was preempted by the Commodity Exchange Act because Kalshi is a federally regulated exchange overseen by the Commodity Futures Trading Commission.
The federal docket shows that Judge Vernon D. Oliver entered a stipulated order on December 8, 2025, requiring Connecticut officials to refrain from enforcement while the court considered Kalshi’s request for preliminary relief. That order kept the state from immediately acting against Kalshi, but it did not resolve the underlying preemption fight.
Oliver denied Kalshi’s motion for a preliminary injunction in a memorandum and order dated August 7, 2026. The order rejected Kalshi’s argument that the sports contracts at issue fit within the Commodity Exchange Act’s swap framework in a way that displaced Connecticut gambling law at the preliminary-injunction stage.
“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,” Oliver wrote. The contracts, he found, turn on specific sports results, including game winners, point spreads and player-stat thresholds.
Oliver also concluded that Kalshi had not shown that federal law would preempt Connecticut’s gambling enforcement even if the products qualified as swaps. That gave Connecticut a significant federal-district-court ruling before the state filed the separate lawsuit announced by Tong’s office on August 26.
What happened at the Second Circuit?
Kalshi sought emergency relief from the U.S. Court of Appeals for the Second Circuit after Oliver denied the preliminary injunction. On August 19, 2026, Judge Sarah A. L. Merriam denied temporary relief pending review by a three-judge panel and referred Kalshi’s emergency motion to that panel.
That order did not decide the merits of Kalshi’s appeal. It left Oliver’s denial of preliminary relief in place while the Second Circuit considered whether a panel should grant interim relief or address the broader preemption issue in the appeal.
The distinction matters because the Second Circuit has not issued a final appellate ruling resolving whether Connecticut’s gambling laws are preempted as applied to Kalshi’s sports-event contracts. Connecticut has a favorable district-court ruling in its federal case. Kalshi, meanwhile, has a favorable preliminary-injunction ruling from the Third Circuit in separate litigation.
For Connecticut, the immediate result was practical: the state did not have to wait for a completed merits appeal before pressing its enforcement position. For Kalshi, it increased the pressure of defending its sports-contract model in federal appellate proceedings and in the new Connecticut lawsuit.
Why does the Third Circuit ruling matter?
The strongest appellate ruling for Kalshi remains the Third Circuit’s April 6, 2026 decision in KalshiEX LLC v. Flaherty, No. 25-1922. In that case, a divided panel affirmed preliminary injunctive relief for Kalshi in a dispute with New Jersey officials, concluding that Kalshi had shown the required likelihood of success on its federal preemption theory at that stage of the case.
Judge David J. Porter wrote the majority opinion, joined by Chief Judge Michael A. Chagares. The majority held that Kalshi had shown a reasonable chance of establishing that the contracts fit the Commodity Exchange Act’s swap definition because they provide for payments tied to the “occurrence, nonoccurrence, or the extent of the occurrence of an event or contingency associated with a potential financial, economic, or commercial consequence.” Judge Jane R. Roth dissented.
The Third Circuit decision did not finally resolve the merits of every state-law challenge to Kalshi’s sports contracts. It affirmed preliminary relief under the legal standard that governs injunctions before final judgment. Even so, it gave Kalshi an appellate decision it can cite in other courts as state regulators argue that sports-event contracts should be treated as gambling products.
Oliver reached a different conclusion in Connecticut, reading the statutory definition more narrowly in the context of sports outcomes. His August 7 order does not bind the Second Circuit or courts outside his district, but it gives state regulators a detailed federal-court opinion rejecting Kalshi’s theory outside the Third Circuit.
Where do the CFTC and DOJ fit in?
The federal government has also entered the fight. On April 2, 2026, the Commodity Futures Trading Commission and the U.S. Department of Justice sued Arizona, Connecticut and Illinois, arguing that those states’ enforcement actions against federally regulated event-contract markets are preempted by the Commodity Exchange Act.
That federal filing aligns the CFTC and DOJ with the broad preemption position Kalshi has advanced, but it has not ended the Connecticut dispute. Oliver’s August 7 order considered the preemption issue and still denied Kalshi preliminary relief. The state lawsuit announced by Tong’s office now gives Connecticut another vehicle to argue that sports-event contracts offered to state residents must comply with Connecticut gambling law.
The agency posture also shows why the case matters beyond one exchange. Prediction-market operators want a national framework under federal commodities law. State gambling regulators want to preserve licensing systems that govern sportsbooks, consumer safeguards, minimum age rules and integrity obligations.
What is at stake for Kalshi’s sports-contract model?
Kalshi’s business position depends on treating sports-event contracts as federally regulated market instruments rather than state-regulated wagers. Connecticut’s position is that the form of the product does not change the substance of the transaction when users are paying for yes-or-no exposure to sports outcomes.
The consequences are financial and operational. Licensed sportsbooks in Connecticut must operate under a state gambling framework that includes licensing, age restrictions and consumer-protection requirements. If Kalshi must comply with similar state-by-state rules, its sports-contract business would look less like a single national exchange product and more like a gambling product subject to local licensing constraints.
Connecticut’s December 2025 action also named Robinhood and Crypto.com, showing that regulators are looking beyond Kalshi as financial platforms test sports-linked event contracts. The same preemption issue could shape how brokerages, crypto platforms and exchange operators decide whether to list sports products for U.S. customers.
The next concrete milestones are the Second Circuit proceedings in Kalshi’s federal appeal and the Connecticut lawsuit announced on August 26, 2026. Until an appellate court resolves Connecticut’s preemption dispute on the merits, the state and Kalshi remain in parallel fights over whether sports-event contracts belong under federal commodities law, state gambling law, or both.
