Federal appeals courts split on Kalshi as state legal costs mount

The Third Circuit handed Kalshi a win in April. The Sixth and Ninth Circuits handed it losses. The Second Circuit denied an emergency injunction. That is four rulings in roughly six months, pulling in four directions, and the company still has no definitive answer to the question every state attorney general is now asking: does federal CFTC oversight actually displace state gambling law, or does it simply coexist with it?

Arkansas Attorney General Tim Griffin filed his complaint on Wednesday, making Arkansas the seventh state to take formal action against Kalshi. The filing runs 57 pages under the Arkansas Deceptive Trade Practices Act and asks for restitution, civil penalties, gambling taxes going back to whenever Kalshi first served Arkansas customers, and an injunction. Griffin's theory is the same one New York, Nevada, Utah, and the others have used: that Kalshi is running a sports book without a license, and that calling it a derivatives exchange changes nothing about what it is in practice.

What is different about the Arkansas complaint is the precision of its evidence. Griffin's team leaned on Kalshi's own consumer-protection infrastructure — self-exclusion tools, deposit limits, trading breaks, the National Council on Problem Gambling partnership — and read each one back as a confession. The argument is tighter than it looks. A company that voluntarily builds responsible-gambling architecture has implicitly accepted that its product carries gambling-style harm. Griffin didn't need to prove Kalshi is a bookie. He needed Kalshi to have already admitted it.

The age question sharpens that. Arkansas sets the legal gambling age at 21. Kalshi accepts users from 18. The company recently added deposit limits and parental account links for the 18-to-20 cohort, which turns out to have moved an estimated $5.4 billion on the platform through late August. That is not a rounding error. That is a product decision, and Griffin treats it as one.

Kalshi's standard defense — that CFTC oversight as a designated contract market preempts state gambling law entirely — has worked once at the appellate level and failed in multiple others. The CFTC has itself filed suit against at least ten states to defend that preemption theory, which means the federal agency is now spending enforcement resources protecting a private company's business model while that model is simultaneously generating a $36 billion damages demand from New York and criminal charges in Utah. That combination is not sustainable on anyone's budget, and it is not the kind of regulatory posture that survives a change in administration priorities.

The reporting frames this as a legal siege, and by count it is. I think the legal framing misses where the real pressure is building. Kalshi took 82% of a record $72.3 billion in combined prediction-market volume in September. That concentration means every new state filing lands on one balance sheet. The company raised at a $40 billion valuation with that legal cloud already visible. Investors priced the preemption argument as likely to hold. I think they are underweighting the scenario where the circuit split persists long enough that Congress has to act, or long enough that the CFTC's litigation posture becomes politically untenable, whichever comes first.

My own bias runs toward downside scenarios, and I am adjusting for it here: the more probable path is still that federal preemption holds in most circuits and Kalshi absorbs the state penalties as a cost of market leadership. But the tail — the one where a prolonged split forces a legislative settlement that reshapes the product itself — is not being priced at anything close to what I would put on it.