Ohio orders ten prediction market firms to halt sports contracts

Andromeda Morrison issued ten cease-and-desist notices on a single day, and the list reads like a directory of the prediction market industry: Underdog, Robinhood Derivatives, Coinbase, Polymarket's U.S. entity, Gemini Titan, ProphetX, Novig, Plus500US Financial Services, Moomoo Financial, and Webull Financial. Each company must confirm compliance with the Ohio Casino Control Commission by October 16 or face administrative, civil, or criminal consequences. None holds an Ohio sports gaming license.

The legal basis is the Sixth Circuit's September 25 ruling in KalshiEx v. Schuler, in which Circuit Judge Julia Smith Gibbons wrote that the Commodity Exchange Act does not expressly preempt state sports-betting laws because those laws have only "incidental effects" on designated contract markets rather than directly regulating them. Ohio read that ruling and moved within days. Morrison's statement was direct: these companies are conducting illegal gambling activity, and the commission will treat them accordingly.

What gives this action its weight is the breadth of the target list. Kalshi, which brought the underlying case, was not named — Ohio's existing litigation against Kalshi presumably provides a separate enforcement path — but every other significant platform operating in the sports contract space received a notice. Robinhood Derivatives, which had argued that federal swap classification preempted Ohio's rules, is now on the wrong end of a cease-and-desist in the state where it made that argument.

The coverage this week has focused on the Illinois federal ruling, where Judge Pacold reached roughly the opposite conclusion — finding Kalshi's contracts are likely swaps and that portions of Illinois gaming law are likely preempted. Two federal courts, two circuits, two conclusions. The reporting has treated this as a paradox. I think it is more precisely a coordination problem: neither ruling resolves the statutory question cleanly, both are preliminary, and the gap between them is now being filled by state regulators who are not waiting for appellate resolution.

The mechanism here matters. A company that receives a cease-and-desist in Ohio faces a binary: comply and exit Ohio users, or litigate and risk criminal referral while the federal question remains open. For smaller operators on the list — ProphetX, Novig, Gemini Titan — that calculation is asymmetric in ways it is not for Robinhood or Coinbase. The Ohio action will almost certainly produce differentiated compliance, with some operators exiting and others contesting, and that differentiation will itself become evidence in subsequent proceedings about what the industry understood its legal exposure to be.

The consensus read is that this is a temporary enforcement spike that Supreme Court review will eventually resolve. I think that underweights how durable state-level enforcement can become while federal litigation proceeds at appellate speed. In the DeFi liquidity space, I watched a comparable dynamic — a statutory ambiguity that everyone assumed would resolve upward, but which instead hardened into patchwork state enforcement that persisted well past the point where the legal theory had nominally been clarified. The October 16 deadline is not symbolic. It is a compliance date that ten companies now have to answer.