The Massachusetts Supreme Judicial Court heard oral arguments this week in the state’s lawsuit against Kalshi. Justices repeatedly questioned whether the company’s sports-event contracts are fundamentally different from traditional sports betting. The hearing signals that the court is likely to uphold Massachusetts’ authority to block these contracts, adding to a growing national split over federal preemption under the Commodity Exchange Act.
This case tests the boundary between CFTC-regulated event contracts and state gambling laws. Massachusetts secured the first preliminary injunction against Kalshi earlier this year, though an appellate court later issued a stay allowing operations to continue during litigation. The outcome could influence whether states retain meaningful oversight in this emerging vertical.
Justices Question Whether Contracts Are Simply “Bets”
A central issue was whether Kalshi’s sports-event contracts differ in any meaningful way from bets. Justice Gabrielle Wolohojian asked directly: “In what way do they differentiate from what would colloquially be known as a bet?”
Justice Scott Kafker framed the matter more bluntly: “I understand betting on all kinds of commodities is clearly covered. It’s sports gambling.” He later added: “If you want to gamble on a game, this is one way to do it.” Kafker reinforced the point by observing that “this does seem to have a major aspect of sports gambling to it.”
Kalshi attorney Grant Mainland argued the platform functions as a regulated financial exchange, not a sportsbook. He emphasized user-to-user trading and clearinghouse mechanics. Yet the justices appeared unconvinced these features alter the underlying activity.
This line of questioning highlights a core tension. Courts continue to examine whether innovative contract structures can escape long-standing state gambling frameworks.
Preemption Argument Faces “Upstream” Battle
Kalshi‘s primary defense rests on CFTC exclusive jurisdiction under the Commodity Exchange Act, as amended by the Dodd-Frank Act. The company contends this preempts state gambling enforcement.
The justices expressed doubt that Congress intended such a sweeping displacement of state authority. Justice Scott Kafker told counsel: “I just feel like you’re swimming upstream here.” He added that if Congress meant to override state gambling laws, “it would do this more clearly and more distinctly.”
Justice Dalila Argaez Wendlandt questioned whether the phrase “exclusive jurisdiction” alone suffices to override state law. The exchange suggests the preemption theory faces significant judicial resistance in Massachusetts.
This skepticism mirrors arguments playing out in other jurisdictions. It underscores that federal preemption claims in event contracts remain an unsettled and high-stakes legal question.
Judges Press Kalshi on “Gaming” Classification and CFTC Rule 40.11
The court also examined how Kalshi classified its contracts under CFTC rules. Justice Elizabeth N. Dewar pressed on potential inconsistencies, asking: “So I’m confused. Are these contracts involving gaming or not?”
Discussion focused on CFTC Rule 40.11. Grant Mainland noted the rule “has 2 components to it. Does it involve gaming, and is it contrary to the public interest?” and stated there has never been a public interest review for sports-related event contracts.
Justice Elizabeth N. Dewar emphasized a stricter reading: contracts “involving, quote, gaming are not allowed.” The justices appeared to view Kalshi‘s reliance on self-certification and lack of formal CFTC objection as insufficient to support its position.
This vulnerability around classification and rule interpretation could prove decisive. It illustrates how technical regulatory arguments intersect with broader policy concerns about sports gambling oversight.
Risk of a “Sea Change” in State Authority
Massachusetts warned that accepting Kalshi‘s arguments would block state regulation of what amounts to sports betting. Deputy State Solicitor Gerard Cedrone told the court it would amount to “blocking out state regulation of what is in all respects a sports bet.”
The state also challenged Kalshi‘s classification of contracts as swaps. It argued a broad reading would render key parts of the statutory definition meaningless. Justices probed the state’s position as well, particularly on whether event contracts fit the Commodity Exchange Act’s swap definition.
Risk and limitation exist on both sides. A ruling favoring Kalshi could accelerate convergence between prediction markets and sports betting, potentially diminishing state authority nationwide. Conversely, a decision upholding the state could slow innovation in event contracts and encourage further patchwork regulation.
Recent federal rulings show division. The Sixth Circuit denied Kalshi an injunction in Ohio. The Ninth Circuit has raised similar questions. By contrast, the Third Circuit ruled in Kalshi‘s favor on preemption. These conflicts increase the likelihood the issue reaches the Supreme Court of the United States.
The Bottom Line
The Massachusetts Supreme Judicial Court’s skeptical posture toward Kalshi‘s preemption and classification arguments reflects deeper judicial caution about redefining sports-event contracts outside state gambling statutes. If the court upholds the injunction, Massachusetts would become the second state after Nevada to enforce a court-backed ban. This inflection point will shape how states and the CFTC allocate authority over an emerging vertical that continues to blur lines between derivatives and wagering. Operators and policymakers should treat regulatory ambiguity as a core planning input rather than a temporary obstacle. Clearer boundaries—whether through legislation, rulemaking, or higher-court resolution—will ultimately determine whether innovation and accountability can coexist at scale in this space.
