A federal judge has determined that Kalshi’s lawsuit against the state of Massachusetts will be heard in a state court instead of federal court, a ruling that may significantly bolster Massachusetts’ efforts to limit Kalshi’s offerings of sports event contracts. The U.S. District Court for the District of Massachusetts announced this decision, directing the matter to the Superior Court for Suffolk County, which is a state-level venue. This ruling is final and cannot be appealed, marking a new chapter in the ongoing dispute between Kalshi and various state authorities, and potentially encouraging other state attorneys general to pursue similar lawsuits against prediction markets.
Massachusetts Attorney General Andrea Campbell initiated the lawsuit against Kalshi last month, making her the first state AG to take such action. Kalshi responded by arguing that the case warranted consideration in federal court based on its previous legal victories against states such as Nevada and New Jersey, where it secured injunctions allowing its operations to continue.
The Massachusetts government contends that Kalshi’s prediction markets violate state gambling statutes by permitting customers to wager on sporting events without the necessary gambling licenses or compliance with local gambling regulations. Kalshi counters that federal laws, specifically the Commodity Exchange Act, take precedence over state laws, asserting that only the Commodity Futures Trading Commission (CFTC) has the authority to regulate its activities.
Legal experts noted that while federal courts have historically shown more favor toward arguments like Kalshi’s regarding federal preemption, state courts may be more sympathetic to state gambling regulations. Kalshi’s claim of “complete preemption” was dismissed by Judge Richard G. Stearns, who stated that the company’s interpretation did not align with the established legal definition. Kalshi had claimed that states were entirely precluded from enforcing their gambling laws against a CFTC-registered exchange, arguing that the CEA prohibits such regulation.
However, Judge Stearns clarified that Kalshi did not argue for complete preemption in the broader sense, which would entail Congress designating a federal cause of action as the exclusive means of addressing violations of the law. Instead, he emphasized that Kalshi’s argument was merely about a specific type of sports betting that it offers and did not equate to a broader jurisdictional challenge against state regulatory authority.
This latest ruling adds to a series of setbacks for Kalshi, which has faced challenges in other jurisdictions as well. Earlier this year, a Maryland federal district judge denied an injunction that would have allowed Kalshi to continue offering sports contracts in that state, although the state has agreed to pause enforcement of its ban pending an appeal. Furthermore, a recent ruling regarding Crypto.com illustrated the enforcement challenges facing prediction markets, as the platform announced it would cease offering certain contracts following the judge’s denial of an injunction.
As the struggle between Kalshi and state regulators continues, the implications of this ruling could extend beyond Massachusetts, influencing how other states approach prediction markets and possibly leading to increased litigation in the sector.


