Former Securities and Exchange Commission and Commodity Futures Trading Commission Chair Gary Gensler has entered the pivotal legal battle over prediction markets, filing an amicus brief with the Sixth Circuit Court of Appeals arguing that sports-related contracts do not fall under federal derivatives oversight.

Market Context

The case centers on KalshiEx (Kalshi), a prediction market provider that filed a preemptive lawsuit against Ohio seeking to block the state from taking enforcement action. A federal judge ruled against Kalshi in March, and the appeal now rests before the Sixth Circuit. The outcome carries sweeping implications for how prediction markets operate across the United States.

Gensler's filing traces derivatives regulation through the Commodity Exchange Act and the Dodd-Frank Wall Street Reform and Consumer Protection Act, which he helped implement as CFTC chair from 2009 to 2014. He later served as SEC chair from 2021 to 2025.

Analysis

The brief contends that Congress excluded sports betting contracts from the statutory definition of swap under Dodd-Frank. Gensler argues these instruments lack the hedging characteristics central to derivatives regulation, stating in the filing: 'Congress did not include sports betting contracts within the statutory Dodd-Frank definition of swap.' He adds: 'Sports bets are very rarely, if ever, about hedging.'

The regulatory clash extends beyond federal versus state jurisdiction. The Indian Gaming Association and tribal organizations argue prediction markets violate sovereign rights under the Indian Gaming Regulatory Act by conducting gaming activities on native lands without tribal benefit. The American Gaming Association contends there is no meaningful distinction between Kalshi's offerings and traditional sportsbooks, citing trademark filings where Kalshi described its services as related to 'sports betting' and 'gambling tournaments.'

The CFTC itself filed a competing brief arguing that any event contract traded on designated contract markets qualifies as a swap under Congress's broad definition. Gensler's filing pushes back, noting that hedging theories advanced by the regulator are 'at best only tenuously connected to reliable hedges of commercial risks.'

Key Numbers

- Multiple regulatory bodies filed competing briefs: CFTC, AGA, Better Markets, Indian Gaming Association, and tribal organizations

- Third Circuit Court ruled in April states cannot shut down prediction markets; Ninth Circuit panel showed greater sympathy to state arguments

- States face potential loss of significant tax revenue if CFTC's federal oversight claim ultimately prevails at the Supreme Court level

What to Watch

The Sixth Circuit's ruling will set precedent for other jurisdictions weighing in on this jurisdictional dispute. Legal experts anticipate this matter reaching the Supreme Court given conflicting circuit decisions and substantial economic implications for state treasuries.

If courts ultimately side with states, prediction market operators may face registration requirements across multiple jurisdictions and potential criminal exposure in states like Arizona that impose penalties for operating unregistered gambling platforms.