Appeals court upholds states' right to regulate Kalshi sports prediction markets

A federal appeals court has ruled that states retain the authority to regulate Kalshi's sports prediction markets under their existing gambling laws, marking another significant legal setback for the platform as it attempts to establish itself as a national player in the prediction market space.

The decision, which specifically addressed regulatory challenges from Ohio and Tennessee, rejected Kalshi's argument that its operations should fall under a federal framework that would preempt state-level oversight. Instead, the court determined that states possess the power to treat prediction markets as gambling activities subject to their own regulatory regimes. This distinction matters enormously: if prediction markets are classified as gambling, they become subject to the patchwork of state laws that govern casinos, sports betting, and other wagering activities—each with its own licensing requirements, restrictions, and compliance burdens.

Kalshi, founded by CEO Tarek Mansour, has positioned itself as a platform for trading contracts based on real-world events, from election outcomes to economic indicators to sports results. The company has argued that this represents a fundamentally different activity from traditional gambling, one that should operate under federal commodity trading rules rather than state gambling statutes. The appeals court's ruling effectively rejects that distinction, at least as a matter of law in the jurisdictions involved.

The implications extend well beyond Ohio and Tennessee. If this ruling stands and influences other courts, it could establish a precedent that fragments the prediction market industry along state lines. Rather than operating under a single national set of rules, platforms like Kalshi would need to navigate fifty different regulatory environments, each with potentially different requirements for licensing, consumer protections, and operational restrictions. Some states might prohibit prediction markets entirely, while others might allow them under strict conditions. This kind of fragmentation has historically made it difficult for financial platforms to scale nationally.

The ruling also reflects broader tension between how regulators and courts view prediction markets. Proponents argue they serve a legitimate economic function—allowing people to express beliefs about future events and potentially improving information aggregation. Critics and regulators, particularly those focused on consumer protection, see them as indistinguishable from gambling, with all the associated risks of addiction, fraud, and financial harm to vulnerable populations.

Kalshi's path to this moment has been contentious. The company has faced resistance not only from state regulators but also from established gambling interests, including Indian casinos, which view prediction markets as potential competitors for consumer dollars. CEO Mansour's relationship with these stakeholders has reportedly been fraught, with tensions over how prediction markets might cannibalize traditional gambling revenue.

The appeals court decision does not end Kalshi's legal battles. The company could seek further appeals, potentially to the Supreme Court, or it could attempt to comply with state-by-state regulations. But the ruling signals that courts are not inclined to carve out a special federal exemption for prediction markets. Instead, they appear willing to let states exercise their traditional police powers over gambling and wagering activities. For Kalshi and similar platforms, this means the path to national scale just became significantly more complicated and costly.