Ninth Circuit Turns Prediction Markets Into a State-Gambling Control Fight
The Ninth Circuit affirmed in part the dissolution of Kalshi’s injunction against Nevada, holding that Kalshi had not shown the Commodity Exchange Act preempts Nevada gaming law for sports-event contracts. The panel treated the sports products as sports bets rather than CFTC-protected swaps, while remanding the election-contract issue. The decision conflicts with the Third Circuit’s April ruling favoring Kalshi’s preemption theory, increasing the odds of Supreme Court review.
Ninth Circuit Turns Prediction Markets Into a State-Gambling Control Fight
The Ninth Circuit’s August 28 ruling against Kalshi does more than block one company’s sports contracts in Nevada. It reframes prediction markets as a jurisdictional fight over whether monetized forecasts belong inside the federal derivatives stack or can be pulled back into state gambling regimes.
Editorial illustration of a prediction-market screen splitting between federal courthouse columns and state gambling checkpoints, with abstract sports-score tiles and data-network lines under tension.
Quick Read
On August 28, 2026, the U.S. Court of Appeals for the Ninth Circuit affirmed in part a Nevada order dissolving Kalshi’s preliminary injunction as to sports-event contracts, finding Kalshi had not shown that the Commodity Exchange Act preempts Nevada gaming rules for those products. The panel remanded the election-contract issue for further district-court review. ([cdn.ca9.uscourts.gov](https://cdn.ca9.uscourts.gov/datastore/opinions/2026/08/28/25-7516.pdf))
The key move was definitional: the court said Kalshi’s sports-event contracts were not Commodity Exchange Act swaps because, in substance, they were sports bets. That matters because Kalshi’s preemption theory depends on placing the contracts inside the CFTC-regulated derivatives system rather than inside state gambling law. ([cdn.ca9.uscourts.gov](https://cdn.ca9.uscourts.gov/datastore/opinions/2026/08/28/25-7516.pdf))
The ruling collides with the Third Circuit’s April 6, 2026 decision in KalshiEX v. Flaherty, which affirmed an injunction against New Jersey enforcement after concluding Kalshi had a reasonable chance of showing federal preemption. Bloomberg Law and NOTUS both framed the Ninth Circuit decision as a major state-regulation win likely headed toward Supreme Court review. ([www2.ca3.uscourts.gov](https://www2.ca3.uscourts.gov/opinarch/251922p.pdf))
The label lost power
Kalshi’s argument depends on calling sports-outcome products event contracts traded on a CFTC-designated contract market. The Ninth Circuit looked past that architecture and treated the contracts according to their practical function: wagers on sports outcomes, props, spreads, and linked outcomes. Inference: for platforms, legal interface design is now less protective if courts characterize the underlying activity as gambling.
The circuit split is live
The Third Circuit treated Kalshi’s New Jersey dispute as likely preempted by the Commodity Exchange Act because the trades occur on a CFTC-licensed market; the Ninth Circuit rejected that path for Nevada sports contracts. That disagreement is now the central legal fact, because similar platforms need a national operating model while state regulators want geographic control.
Sports is the test case for larger markets
The ruling is formally about sports contracts, not every prediction market. But the control logic is broader: once event contracts become high-volume consumer prediction products, regulators will fight over whether they are financial information markets, gambling products, or both.
Layer 1: The Reportable Facts
The Ninth Circuit issued its published opinion in KalshiEX, LLC v. Assad on August 28, 2026. The case arose after the Nevada Gaming Control Board sent Kalshi a cease-and-desist letter saying the company was operating a sports-betting platform without complying with Nevada gaming law. Kalshi argued it was not running a sportsbook but a CFTC-regulated designated contract market offering lawful event contracts. ([cdn.ca9.uscourts.gov](https://cdn.ca9.uscourts.gov/datastore/opinions/2026/08/28/25-7516.pdf))
The panel affirmed in part the district court’s order dissolving Kalshi’s preliminary injunction against Nevada. It held that Kalshi had not shown a likelihood that the Commodity Exchange Act preempts Nevada gaming regulations as applied to sports-event contracts. The court also remanded the election-contract issue, meaning the sports holding did not finally resolve how Nevada’s challenge to political-event products should be handled. ([cdn.ca9.uscourts.gov](https://cdn.ca9.uscourts.gov/datastore/opinions/2026/08/28/25-7516.pdf))
The opinion’s crucial statutory holding was that Kalshi’s sports-event contracts were not swaps under the CEA definition because they were sports bets. The panel noted that Kalshi’s sports products included markets tied to winners, draft outcomes, halftime-show details, prop-style outcomes, over-unders, spreads, and linked trades resembling parlays; it also cited record findings that sports-related trades made up more than 90 percent of Kalshi’s trades in 2025 and 95 percent of its revenue. ([cdn.ca9.uscourts.gov](https://cdn.ca9.uscourts.gov/datastore/opinions/2026/08/28/25-7516.pdf))
The Ninth Circuit’s ruling directly conflicts with the Third Circuit’s April 6, 2026 decision in KalshiEX v. Flaherty. There, a divided Third Circuit affirmed preliminary relief against New Jersey regulators after concluding Kalshi had shown a reasonable chance of proving that federal law preempts otherwise applicable state gambling law for sports-related event contracts on a CFTC-licensed designated contract market. ([www2.ca3.uscourts.gov](https://www2.ca3.uscourts.gov/opinarch/251922p.pdf))
Independent reports confirmed the stakes. NOTUS described the Ninth Circuit decision as opening the door to state-by-state regulation of prediction-market platforms, while Bloomberg Law reported that the decision creates a circuit split and that the Ninth Circuit also issued unpublished decisions involving Crypto.com and Robinhood derivatives entities. ([notus.org](https://www.notus.org/courts/ninth-circuit-ruling-prediction-market-websites-state-regulation))
Layer 2: The System Read
Verified fact: the Ninth Circuit did not merely say Nevada can enforce a local licensing rule. It narrowed the federal hook that prediction-market operators rely on by rejecting the idea that these sports contracts qualify as swaps. That pushes at least one major class of event contracts out of a uniform federal derivatives frame and back toward the older state-police-power frame for gambling. ([cdn.ca9.uscourts.gov](https://cdn.ca9.uscourts.gov/datastore/opinions/2026/08/28/25-7516.pdf))
Inference: this is why the case belongs in the information-ecosystem lane, not only the gambling lane. Prediction markets convert uncertainty into tradable, price-like signals. If those signals are treated as financial derivatives, the CFTC becomes the central gatekeeper. If they are treated as gambling, states regain the power to fragment access, licensing, consumer protections, advertising rules, and permitted subject matter.
The sports category is also a strategic test case. Sports outcomes are the easiest contracts for state regulators to characterize as betting, because the consumer use case closely resembles sportsbook activity. But the same infrastructure can price elections, policy decisions, economic releases, wars, celebrity outcomes, platform behavior, and public narratives. The fight over sports therefore becomes a proxy for who controls markets that monetize public forecasts.
The Ninth Circuit leaned on federalism and major-questions logic, warning against reading Dodd-Frank as a quiet transfer of national gambling authority to the CFTC. That is a broader institutional signal: courts may be skeptical when platforms use financial-market registration to bypass state regimes in areas historically controlled by state or tribal gambling regulators. ([cdn.ca9.uscourts.gov](https://cdn.ca9.uscourts.gov/datastore/opinions/2026/08/28/25-7516.pdf))
Layer 3: What To Watch Next
First, watch the Supreme Court track. With the Third Circuit and Ninth Circuit now pointing in opposite directions, platforms and state regulators lack a stable national rule. Bloomberg Law reported that the split is likely to draw high-court attention, and NOTUS reported that the ruling is expected to be appealed. ([news.bloomberglaw.com](https://news.bloomberglaw.com/securities-law/kalshi-takes-hit-as-appeals-court-says-sports-bets-arent-swaps))
Second, watch the election-contract remand. The Ninth Circuit separated sports from elections, leaving the district court to analyze Nevada’s election-contract challenge under the opinion’s framework. That is the next pressure point because election markets raise a different mix of derivatives law, speech, campaign-integrity, and information-manipulation concerns.
Third, watch the CFTC. The panel emphasized that existing CFTC regulation bars certain event contracts involving gaming, while the industry argues that CFTC-supervised markets should be treated as federal venues. If the CFTC changes or clarifies its event-contract rules, that could reshape the litigation posture, but it may also intensify the major-questions and federalism objections identified by the Ninth Circuit. ([cdn.ca9.uscourts.gov](https://cdn.ca9.uscourts.gov/datastore/opinions/2026/08/28/25-7516.pdf))
Fourth, watch state coalitions and platform design. Bloomberg Law reported parallel Ninth Circuit outcomes involving Crypto.com and Robinhood derivatives cases, and the Ninth Circuit record shows broad state and tribal interest in preserving gambling authority. The practical question is whether platforms geo-fence, seek state gambling licenses, narrow sports products, or keep pushing for a single federal market model. ([cdn.ca9.uscourts.gov](https://cdn.ca9.uscourts.gov/datastore/opinions/2026/08/28/25-7516.pdf))
Pattern Nexus Lens
The Pattern Nexus lens: this is a governance fight over the pricing of reality. Prediction markets promise clean probability signals, but once those signals are tied to money, consumer interfaces, sports outcomes, and political events, the legal question becomes who gets to define the market’s ontology. Is a forecast contract a derivative, a bet, a data product, or a social-risk engine? The Ninth Circuit’s answer for sports is concrete: calling a sports bet an event contract does not move it beyond state gambling control.
Conclusion
The Ninth Circuit has not ended prediction markets. It has made their regulatory map more unstable. Kalshi’s sports contracts can be federally listed in one circuit’s logic and state-regulated gambling in another’s, which is exactly the kind of split platform markets try to avoid. Until the Supreme Court, Congress, or the CFTC supplies a clearer rule, the future of monetized forecasts will be fought contract by contract, state by state, and category by category.
Sources
- KalshiEX, LLC v. Assad, et al. - U.S. Court of Appeals for the Ninth Circuit - Primary opinion supporting the August 28, 2026 ruling, the partial affirmance, the sports-contract swap analysis, the remand on election contracts, and the court’s federalism reasoning.
- Court rules Kalshi sports bets aren't "swaps," just gambling with a different name - Ars Technica - Independent technology-policy report supporting the description of the ruling as a loss for Kalshi and a conflict over whether state gambling law can reach sports prediction contracts.
- Federal Court Says States Can Regulate Prediction Market Sites - NOTUS - Independent report supporting the state-regulation framing and the expectation that the ruling will be appealed.
- Kalshi Takes Hit as Appeals Court Says Sports Bets Aren’t Swaps - Bloomberg Law - Independent legal-market report supporting the circuit-split framing, the related Crypto.com and Robinhood context, and the stakes for CFTC jurisdiction.
- KalshiEX LLC v. Flaherty - U.S. Court of Appeals for the Third Circuit - Primary Third Circuit opinion supporting the April 6, 2026 conflict over Kalshi’s federal-preemption theory and sports-event contracts.
FAQ
Did the Ninth Circuit ban all prediction markets?
No. The ruling addressed Kalshi’s request for preliminary relief against Nevada enforcement and affirmed the dissolution of the injunction as to sports-event contracts. The panel remanded the election-contract issue for further review rather than resolving all prediction-market categories.
Why does the swap question matter?
Kalshi’s federal-preemption argument depends on treating the sports contracts as swaps traded on a CFTC-designated contract market. If they are swaps, Kalshi can argue that federal derivatives law displaces state gambling law. If they are sports bets rather than swaps, Nevada’s gambling regime has room to operate.
Why is this likely to escalate?
The Third Circuit and Ninth Circuit have reached conflicting preliminary-injunction conclusions on similar Kalshi sports-contract disputes. That split creates different legal treatment across jurisdictions and raises a clean question about CFTC authority, state gambling power, and the legal status of sports prediction contracts.
Editorial note: This AI Nexus brief separates source-backed reporting from Pattern Nexus analysis. Sources are listed for verification and follow-up reading.
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