Kalshi's Sixth Circuit Loss Puts 69% of Its Sports Demand in Play

Kalshi has to lock out users in Ohio and Tennessee after the Sixth Circuit ruled on Sept. 25 that both states can apply their gambling laws to the exchange's sports contracts.

The Timeline

The sequence matters. Kalshi, a CFTC-regulated designated contract market, listed event contracts tied to sports outcomes. Ohio and Tennessee regulators looked at those contracts and saw sports betting, which is a state-regulated activity, not a federal one. Kalshi pushed back with preemption, arguing that complying with fifty different gambling statutes would conflict with its duties as a federally regulated exchange. The district courts didn't buy it. Neither did the Sixth Circuit.

Here's what the filing actually says: geofencing works. The court pointed to location blocking as a way Kalshi can satisfy both its federal obligations and state gambling law at the same time. That one line does a lot of damage, because it kills the impossibility argument. If compliance is technically doable, the conflict preemption claim falls apart.

And this is the second appellate win for the states. That's a pattern now, not a fluke.

The Impact

The legal loss is real. The commercial math is worse.

Eilers &. Krejcik Gaming figures that 69% of Kalshi's retail sports demand comes from states with their own gambling frameworks on the books and their own reasons to enforce them. Geofencing Ohio and Tennessee is one thing. Geofencing two-thirds of your retail demand is another. The court's remedy isn't a technicality, it's a revenue decision, and Kalshi didn't get to make it.

From a compliance standpoint, the preemption theory was always a hard sell. Yes, the Commodity Exchange Act gives the CFTC authority over designated contract markets. But that authority doesn't hand an exchange a license to override state gambling statutes that existed long before the contracts did. Can a federally regulated exchange really run a national sportsbook while ignoring fifty separate state codes? The Sixth Circuit says no, and it isn't close.

What Comes Next

Kalshi can ask the full Sixth Circuit to rehear the case en banc. A petition is normally due within 14 days of the judgment, so watch for a filing in early October. If that fails, the Supreme Court is the last door, and whether a genuine circuit split exists will decide how the justices read it. A clean split gets attention. A one-sided run of appellate losses gets ignored.

The precedent here reaches past Kalshi. Every prediction market that's leaned on federal registration to sidestep state gambling law now has a documented path for how that argument fails. Polymarket, Crypto.com's event contracts, the entire cohort. State attorneys general just got a template, and they'll use it. Expect the next round of cease-and-desist letters before the end of the quarter.

The key detail to watch is the CFTC's posture. The agency has signaled sympathy for event contracts as legitimate derivatives, and it's unlikely to abandon that view. But it can't shield an exchange from state enforcement, and this ruling draws that boundary in permanent ink.

So the practical question isn't whether Kalshi eventually wins on appeal. It's how much of the country it can serve while that appeal plays out. Every state that files next shrinks the map. And for a prediction market, the map is the business.