Kalshi Loses 9th Circuit Ruling as Prediction Markets Face US Supreme Court Showdown

⏱ 3 min read

A unanimous federal appeals court ruling handed down on August 28, 2026 has thrown the future of prediction markets into legal limbo across the United States. The 9th U.S. Circuit Court of Appeals ruled 3‑0 that Nevada can enforce its gambling laws against Kalshi, rejecting the prediction market's argument that federal commodities law gives it nationwide immunity from state regulators.

The decision directly contradicts a 3rd Circuit ruling from April 6, 2026 that went the other way — blocking New Jersey from shutting down Kalshi's sports contracts. That head-on circuit split, covering two of the country's most gambling-active states, all but guarantees a US Supreme Court showdown that will decide whether prediction markets are federally protected financial instruments or plain-old gambling — a question worth tens of billions of dollars to the industry.

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The 9th Circuit Ruling Explained

Kalshi operates under a Commodity Futures Trading Commission (CFTC) license as a designated contract market, and has argued since its launch that this federal status shields its sports event contracts from state gambling laws. The 9th Circuit rejected that argument emphatically. The three-judge panel found that Kalshi's sports contracts "have the essential characteristics of sports betting" and that federal commodities law does not preempt Nevada from applying its own gambling statutes.

The court denied Kalshi's request for a preliminary injunction that would have allowed it to resume offering sports event contracts to Nevada users while the underlying litigation continues. On election contracts, the panel sent that question back to a lower court for further consideration — a partial reprieve, but not the federal shield Kalshi sought.

• Ruling court: 9th U.S. Circuit Court of Appeals
• Decision date: August 28, 2026
• Vote: Unanimous, 3‑0
• Key finding: Federal Commodity Exchange Act does not preempt Nevada gambling law for sports contracts
• Immediate effect: Kalshi must keep Nevada users blocked from sports event markets

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The Circuit Split: 9th vs. 3rd

The legal conflict is now unambiguous. On April 6, 2026, a divided 3rd Circuit panel ruled 2‑1 that Kalshi's sports contracts are "swaps" under the Commodity Exchange Act and that the CEA preempts state law — blocking New Jersey from enforcing its gambling regulations against the company. The lone dissenter, Judge Jane Roth, argued the contracts are "virtually indistinguishable" from bets on DraftKings and FanDuel.

Four months later, the 9th Circuit reached the opposite conclusion on materially similar facts. The result: Kalshi can freely operate in New Jersey under federal protection but must stay out of Nevada sports markets under state law — a geographic absurdity that only the Supreme Court can resolve.

Court	State	Ruling Date	Outcome for Kalshi	Legal Basis
3rd Circuit (2‑1)	New Jersey	April 6, 2026	Win — state blocked	CEA preempts state gambling law
9th Circuit (3‑0)	Nevada	August 28, 2026	Loss — state prevails	CEA does not preempt state gambling law

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What's at Stake for Kalshi

The ruling lands at the worst possible moment commercially. Kalshi is seeking to raise $750 million at a $40 billion valuation — nearly double its $22 billion valuation just three months prior. The company generated roughly $4 billion in annualized revenue as of July 2026, driven largely by sports contracts, which account for up to 90% of its business. Monthly trading volume hit $29.2 billion in June 2026.

Any state that follows Nevada's enforcement model now has a federal appellate precedent to cite. Kalshi has vowed to seek further review, but until the Supreme Court acts — or declines to — the company faces a patchwork of jurisdictions where its most profitable product category may be treated as illegal gambling.

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Impact on Sportsbooks and State Regulators

For licensed US sportsbooks — FanDuel, DraftKings, BetMGM, and others — the 9th Circuit ruling is welcome news. Their argument has always been that prediction markets are functionally identical to sports betting and should face the same licensing costs, tax obligations, and responsible gambling requirements. A Supreme Court ruling that lands with the 9th Circuit would require prediction markets to obtain state licenses everywhere they operate.

State gaming regulators that have moved to restrict prediction market sports contracts — including Nevada, New Jersey, Massachusetts, and Illinois — now have a clearer legal template for enforcement. Those that have held back pending federal clarity now face pressure to act while the appellate wind is behind them.

• States with active enforcement actions or restrictions: Nevada, New Jersey, Massachusetts, Illinois
• SCOTUS timing: Petition likely filed by late 2026; cert grant possible for the 2026‑27 or 2027‑28 term
• If SCOTUS sides with states: prediction markets must obtain gambling licenses in each state, pay gaming taxes, and comply with responsible gambling mandates
• If SCOTUS sides with Kalshi: state gambling regulators lose jurisdiction over the entire sector nationwide

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Sources

Reporting cross-checked against court filings, primary legal analysis, and leading US gambling and financial press.

Sports contracts are now treated as traditional sports bets in the Ninth Circuit and as federally preempted swaps in the Third Circuit — a geographic absurdity that only the Supreme Court can fix.

— Sportico Legal Analysis, Kalshi Nevada Ruling · August 2026