The Commodity Futures Trading Commission’s claim to exclusive jurisdiction over sports prediction-market contracts — upheld by the Third Circuit on April 6, 2026 — is now colliding with state gambling regulators and a pending Ninth Circuit ruling that could split the circuits and force a Supreme Court showdown over whether event contracts are “swaps” or unlicensed sports betting.

The United States is heading toward a Supreme Court fight over who regulates sports prediction markets. On April 6, 2026, the U.S. Court of Appeals for the Third Circuit held in KalshiEX LLC v. Flaherty, No. 25-1922, that the Commodity Futures Trading Commission (CFTC) has exclusive jurisdiction over sports-related event contracts traded on a federally licensed Designated Contract Market (DCM), and that the Commodity Exchange Act (CEA) preempts New Jersey’s gambling laws as applied to those contracts. With the Ninth Circuit hearing Nevada’s appeal nine days later and appearing to lean the other way, a circuit split — and the Supreme Court review that typically follows — is now the base case. This analysis walks through the statute, the cross-jurisdictional divergence, the live litigation, and what compliance teams should do now.

Key Facts:

• The Third Circuit ruled for Kalshi on April 6, 2026 in KalshiEX LLC v. Flaherty, No. 25-1922, the first federal appeals court to address CFTC jurisdiction over sports event contracts — Paul, Weiss
• The CFTC sued Arizona, Connecticut, and Illinois on April 2, 2026, seeking injunctions to block state enforcement against Kalshi and Polymarket — AMBCrypto
• A Massachusetts Suffolk County Superior Court issued a preliminary injunction in January 2026 barring Kalshi’s in-state sports contracts without a gaming licence — Holland & Knight
• The Ninth Circuit heard Nevada’s appeal in N. Am. Derivatives Exch., Inc. v. Nevada, No. 25-7187, on April 16, 2026, and appeared to lean toward Nevada — Holland & Knight
• Representatives John Curtis and Adam Schiff introduced the Prediction Markets Are Gambling Act on March 23, 2026 to reclassify sports event contracts as gambling outside CFTC jurisdiction — congressional record
• Prediction-market taker volume reached $8.6 billion in April 2026, roughly 72% of it sports at Kalshi — Bitcoin.com News

Methodology and sources

This analysis rests on primary litigation documents and law-firm memoranda summarising them: the Third Circuit’s April 6, 2026 decision in KalshiEX LLC v. Flaherty; the pending Ninth Circuit appeal N. Am. Derivatives Exch., Inc. v. Nevada; the CFTC’s April 2, 2026 suits against three states; and the Massachusetts preliminary injunction from January 2026. Statutory references are to the Commodity Exchange Act, principally the swap definition and the “special rule” on event contracts. The jurisdictional scope is the United States (federal versus state), with comparative reference to the United Kingdom and the European Union, where gambling and financial-instrument regulation are drawn differently. The window is January through May 2026. Court outcomes cited are interlocutory — preliminary injunctions and likelihood-of-success findings, not final merits judgments — and that caveat carries through the analysis.

What the statute actually says

The dispute turns on two CEA provisions. The first is the definition of a “swap” in Section 1a(47), broad enough that a binary contract paying out on a future event with economic consequences can fall inside it. The second is the “special rule” in Section 5c(c)(5)(C), which lets the CFTC review event contracts that involve enumerated activities — including gaming and any activity unlawful under state or federal law — and prohibit them if it determines they are contrary to the public interest. Kalshi’s position is that once its contracts trade on a CFTC-licensed DCM and meet the swap definition, federal jurisdiction is exclusive and the CFTC, not state gaming boards, decides whether they may be listed.

The CEA’s swap definition is the doctrinal hinge of the entire fight. Under Section 1a(47), a swap includes an agreement whose payment depends on the occurrence or non-occurrence of a contingent event “associated with a potential financial, economic, or commercial consequence.” The Third Circuit majority found that Kalshi’s sports contracts fit because they trade on a regulated DCM and reference outcomes with economic consequences. As the majority put it: “Because Kalshi’s sports-related contracts are traded on a CFTC-licensed DCM and depend on event outcomes associated with economic consequences, they fit within the Act’s definition of ‘swaps’ subject to the CFTC’s jurisdiction.” That reading converts a question that looks like gambling policy into one of commodities law — and commodities law is federal.

Jurisdiction / Regulator	Status / date	Scope	Key requirement	Penalty / sanction
US Federal (CFTC)	Third Circuit ruling, April 6, 2026	Sports event contracts on a DCM	Treated as “swaps” (CEA §1a(47)); CFTC has exclusive jurisdiction; CEA preempts state gambling law	CEA registration; CFTC civil penalties for unregistered activity
US States (NJ, MA, NV, AZ, CT, IL)	MA injunction Jan 2026; NV 9th Cir. argued April 16, 2026	In-state users wagering on sports outcomes	State gaming licence required under state gaming statutes	Cease-and-desist; unlicensed-gambling penalties
UK (FCA + Gambling Commission)	Established framework	Spread bets vs fixed-odds bets	Spread betting regulated as a financial instrument by the FCA under FSMA; fixed-odds sports betting licensed by the Gambling Commission	FCA and Gambling Commission enforcement penalties
EU (national competence)	No harmonised regime	Event / prediction contracts	Gambling sits with member-state authorities; MiCA and MiFID II do not harmonise it	National gambling-authority sanctions

Sources: Paul, Weiss and Holland & Knight client memoranda (2026); AMBCrypto (April 2026); UK FCA and Gambling Commission frameworks. Last updated: May 22, 2026.

How the jurisdictions diverge

The United States is the outlier because it tries to run two regulatory systems over the same product. Federal commodities law treats a sports event contract on a DCM as a swap; state gaming law treats the same contract as a bet that needs a casino or sportsbook licence. The Third Circuit resolved that clash in favour of federal preemption; the Ninth Circuit may not. By contrast, the United Kingdom long ago drew a clean line: a financial spread bet on a sports or market outcome is regulated by the Financial Conduct Authority (FCA) as a financial instrument under the Financial Services and Markets Act, while a fixed-odds wager is licensed by the Gambling Commission. The European Union does not federalise the question at all — gambling is a matter of national competence, deliberately excluded from both the Markets in Crypto-Assets Regulation and the Markets in Financial Instruments Directive (MiFID II). That structural difference is why Polymarket’s planned US comeback via a $112 million QCEX deal is routed through a CFTC-regulated venue rather than 50 state licences.

The regulatory-arbitrage risk is obvious. A platform that secures DCM status and a favourable circuit can offer nationwide sports contracts that an ordinary sportsbook would need a separate licence to run in each state — undercutting the state-by-state model US sports betting has used since 2018. That is precisely the asymmetry state regulators and the gaming industry are fighting (Epstein Becker Green), and it is why operators have rushed to align with the CFTC perimeter, as seen when Kalshi integrated Grok to power its prediction markets and as the CFTC leans on adjacent venues described in our coverage of Hyperliquid’s pre-IPO perpetual contracts under CME, ICE, and CFTC pressure.

“Gambling regulation has been largely left to the state legislatures,” and “the presumption against preemption applies with special force when Congress has legislated in a field traditionally occupied by the states.”

— Jane R. Roth, Circuit Judge (dissenting), U.S. Court of Appeals for the Third Circuit, in KalshiEX LLC v. Flaherty (Paul, Weiss)

Enforcement and litigation context

The conflict is unusual because the federal regulator is on offence. Rather than waiting to be sued, the CFTC filed suit against Arizona, Connecticut, and Illinois on April 2, 2026, seeking injunctions to stop those states from enforcing gaming law against Kalshi and Polymarket (AMBCrypto, April 2026). Days later the Third Circuit handed the agency a doctrinal win in KalshiEX LLC v. Flaherty. But the state side is not without victories: in January 2026, a Massachusetts Suffolk County Superior Court judge issued a preliminary injunction barring Kalshi from offering in-state users sports-related contracts without a gaming licence, applying Massachusetts gaming law directly to the platform (Holland & Knight). The Ninth Circuit then heard Nevada’s appeal in N. Am. Derivatives Exch., Inc. v. Nevada, No. 25-7187, on April 16, 2026, where the panel appeared sceptical of preemption — a ruling for Nevada would create a circuit split with the Third Circuit and accelerate Supreme Court review (Holland & Knight). None of these are final merits decisions; they are interlocutory rulings on likelihood of success, which is why each side can still claim momentum.

What this means for exchanges, operators, and compliance teams

For DCM operators and prediction-market platforms, the Third Circuit ruling is a green light to keep listing sports contracts in the Third Circuit’s footprint, but not a national all-clear — a contrary Ninth Circuit decision would re-expose them to state enforcement in the West. For licensed sportsbooks and casino operators, the threat is competitive: a federally regulated venue offering the same economic exposure without state licensing fees or tax. State gaming regulators face a choice between pressing enforcement that may be preempted and lobbying Congress to amend the CEA. Legal and compliance teams should treat jurisdiction as unsettled: map exposure circuit by circuit, preserve the ability to geofence by state on short notice, document the DCM status of any listed contract, and watch the CEA “special rule” determinations closely, because a CFTC finding that a contract is contrary to the public interest can pull a product even where preemption otherwise holds. Custodians and clearing members should confirm that margin and settlement treatment match a swap, not a wager, in their books — the same compliance recalibration firms are weighing as crypto rules loosen elsewhere, including when Interactive Brokers weighed a stablecoin launch.

“[Prediction markets] are deceptively calling sports betting financial contracts and investing, despite messaging designed to beguile policymakers and the public. They are increasingly being exposed as backdoor sports betting operations.”

— Bill Miller, President and CEO, American Gaming Association (AGA), at a Senate Commerce subcommittee hearing, May 20, 2026 (CasinoBeats)

What’s next — the forward view

Three tracks will decide the question. First, the Ninth Circuit’s ruling in the Nevada appeal: a decision for the state creates the circuit split that makes Supreme Court review likely, while a decision for Kalshi would consolidate the federal-preemption line and lower the odds of certiorari. Second, Congress: the Prediction Markets Are Gambling Act, introduced March 23, 2026 by Representatives John Curtis and Adam Schiff, would amend the CEA to reclassify sports and casino-style event contracts as gambling outside CFTC jurisdiction — a legislative override that would moot the litigation if it passed, though its prospects are uncertain. Third, the CFTC itself, which can use the Section 5c(c)(5)(C) “special rule” to review and potentially prohibit specific contract types, and which faced direct pressure at the May 20, 2026 Senate Commerce hearing where the AGA argued the agency is policing “Monday Night Football” rather than markets. Expect the Supreme Court question to crystallise within the next year if the circuits split.

FAQ

What did the Third Circuit decide?

In KalshiEX LLC v. Flaherty, No. 25-1922 (April 6, 2026), a divided Third Circuit panel held that the CFTC has exclusive jurisdiction over sports event contracts traded on a Designated Contract Market, that such contracts are “swaps” under the Commodity Exchange Act, and that the CEA preempts New Jersey’s gambling laws as applied to them. It was the first federal appeals court to rule on the question.

Why might there be a circuit split?

The Ninth Circuit heard Nevada’s appeal in N. Am. Derivatives Exch., Inc. v. Nevada, No. 25-7187, on April 16, 2026, and the panel appeared to lean toward Nevada. If it rules that state gambling law applies, that conflicts with the Third Circuit’s preemption holding — a split between circuits that the Supreme Court often resolves.

Are sports prediction-market contracts gambling or financial swaps?

Legally, it depends on the court. The Third Circuit treated them as swaps under the Commodity Exchange Act. State regulators and the American Gaming Association argue they are unlicensed sports betting. The classification determines whether the CFTC or state gaming boards hold authority.

What is the CEA “special rule” on event contracts?

Section 5c(c)(5)(C) of the Commodity Exchange Act lets the CFTC review event contracts involving enumerated activities — including gaming and activity unlawful under state law — and prohibit them if it finds they are contrary to the public interest. It is a federal lever that can pull a product even where preemption otherwise applies.

How do the UK and EU treat the same question?

The UK splits it: financial spread bets are FCA-regulated instruments under the Financial Services and Markets Act, while fixed-odds sports betting is licensed by the Gambling Commission. The EU does not harmonise gambling at all — it is a national-competence matter excluded from MiCA and MiFID II.

What should compliance teams do now?

Treat jurisdiction as unsettled. Map exposure circuit by circuit, retain the ability to geofence by state quickly, document the DCM status of every listed contract, confirm swap-style margin and settlement treatment, and monitor both the Ninth Circuit ruling and any CFTC “special rule” determinations.

This article is informational analysis only and does not constitute legal, regulatory, tax, or investment advice. Regulatory frameworks change frequently and interpretation depends on facts and circumstances; primary documents and official regulator guidance always supersede summaries. Firms should consult qualified legal counsel and their relevant supervisory authority before taking any action based on the analysis above.