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Subscribe NowUS prediction market litigation is escalating across more than 30 cases. See the key states, rulings and risks compliance teams should watch in 2026.
The US prediction market landscape in 2026 has become a multistate, high-stakes legal battle. Platforms like Kalshi, Polymarket, Coinbase, and Robinhood are simultaneously defending enforcement actions across more than a dozen states, while the CFTC fights on their behalf in federal court. The outcome will shape not just prediction markets, but how federal preemption arguments apply across the broader US gambling landscape.
This article breaks down the current state of play, the five jurisdictions most likely to determine the outcome, and what compliance and commercial teams should be watching through the second half of 2026.
Vixio customers can access the full U.S. Prediction Markets Litigation Tracker, which summarises the status of every case between prediction market platforms and state or tribal government entities across state and federal courts. Not yet a subscriber? Get in touch to book a demo.
Hover over each state to reveal its current litigation status.
Prediction markets allow participants to trade contracts tied to the outcomes of real-world events, including elections and, increasingly, sports results. For decades, U.S. prediction markets were largely small-scale and research-oriented, most notably the Iowa Electronic Markets, which operated under CFTC no-action relief for academic purposes.
That changed in March 2025, when KalshiEX LLC filed a federal lawsuit seeking an injunction to prevent the Nevada Gaming Control Board from taking formal enforcement action against its sports-event contracts.
That case opened the floodgates. There are now more than 30 active lawsuits across state and federal courts, spanning four distinct categories of legal challenge.
Download the digital guide, Prediction Markets in 2026: What's at Stake?, for a broader overview.
The litigation is now playing out across multiple federal circuits simultaneously, and the results are mixed.
The Third Circuit handed prediction markets their biggest appellate win to date, upholding an injunction against New Jersey state regulators in April 2026 and ruling that the CFTC has exclusive jurisdiction over sports event contracts.
At district court level, a federal judge in Arizona issued a preliminary injunction favouring Kalshi in May 2026, also concluding that federal law preempts state gambling laws as they apply to derivatives markets regulated by the CFTC. A federal district court in Tennessee similarly granted a preliminary injunction for Kalshi in February 2026.
But the picture elsewhere is less favourable for platforms. In Nevada, the district court judge ultimately sided with the state and dissolved the initial preliminary injunction. The Ohio district court denied Kalshi's motion for an injunction in March 2026, specifically citing a lack of clear congressional intent for sports events to be covered as "swaps." Maryland also denied Kalshi's injunction request. On May 21, a federal appeals court denied requests to stay state court proceedings in both Nevada and Washington, allowing those state enforcement cases to continue.
The Ninth Circuit is now the pivotal forum. Oral arguments were held on April 16 in the consolidated Nevada appeal, covering cases from Kalshi, Robinhood, and Crypto.com. A ruling is pending and is widely expected to determine whether a circuit split with the Third Circuit materialises, which would make Supreme Court review almost inevitable.
Vixio expects platforms to continue filing preemptive federal lawsuits to block state enforcement through the remainder of 2026, while states and tribal nations pursue parallel tracks, civil enforcement, criminal prosecution, and now outright legislative prohibition, to maintain control regardless of what federal courts decide.
The Third Circuit's April 2026 ruling in KalshiEX LLC v. Flaherty et al. upholding an injunction against the New Jersey Division of Gaming Enforcement remains the highest court decision in favour of platforms to date. The court's majority found that sports event outcomes have legitimate financial consequences for sponsors and franchises, satisfying the legal definition of a "swap" under the Commodity Exchange Act. This remains the highest court ruling on the issue and is the strongest legal precedent platforms can currently point to.
The case has been building since February 2025, when Kalshi originally sued New Jersey regulators after receiving a cease and desist order. A federal district court granted a preliminary injunction in April 2025, which was then appealed to the Third Circuit before being upheld in April 2026. Further appeals are expected. How the Third Circuit's reasoning holds up against whatever the Ninth Circuit concludes in Nevada will be the defining test of this precedent.
Nevada is where the legal battle started, and it has become the most consequential jurisdiction in the entire litigation landscape. Importantly, the picture has shifted significantly since Kalshi's initial win here. The federal district court judge subsequently dissolved the preliminary injunction and sided with the state, and the Nevada Gaming Control Board has now filed a separate civil enforcement action in state court. A state judge granted a temporary restraining order in March 2026, temporarily forcing Kalshi to cease offering contracts. On May 21, a federal appeals court declined to stay those state court proceedings pending the Ninth Circuit's review.
Oral arguments in the consolidated Ninth Circuit appeal, covering cases from Kalshi, Robinhood, and Crypto.com, were heard on April 16. One judge in those arguments described the distinction between peer-to-peer contracts and traditional bookmaking as "sophistry to the nth degree." A ruling is pending. If the Ninth Circuit sides with Nevada, it creates a direct circuit split with the Third Circuit, providing the clearest pathway to the Supreme Court. If it sides with the platforms, it consolidates the federal preemption shield across the western states and would likely end the Nevada state court proceedings.
Arizona has generated more legal activity than any other single state, and the picture here has become significantly more complex since the criminal charges were first filed.
Arizona Attorney General Kris Mayes filed a 20-count criminal misdemeanor complaint against Kalshi on March 17, 2026, covering alleged illegal betting on sports and wagers on election outcomes. However, the CFTC sued Arizona in April, and a federal judge granted a temporary restraining order barring the state from continuing its criminal prosecution. On the federal civil side, a district court judge issued a preliminary injunction on May 5, 2026, concluding that federal law preempts state gambling laws as they apply to derivatives traded on CFTC-regulated markets.
Both parties have since agreed to stay the civil case pending the Ninth Circuit's ruling in Nevada. Arizona is therefore sitting in an unusual position: the criminal prosecution is currently blocked, the civil federal ruling has gone in the platforms' favour, but the entire situation is on hold. If Nevada goes against the platforms, Arizona's criminal charges could become live again. The outcome here will continue to determine whether other states pursue criminal prosecution as a strategy to bypass federal civil injunctions.
New York is pursuing one of the most financially consequential enforcement actions of any state. In April 2026, Attorney General Letitia James filed separate suits against Gemini Titan and Coinbase in the New York Supreme Court, seeking permanent injunctive relief against their operations covering sports, culture, elections, and other event contracts, on the basis that they constitute unlicensed and illegal gambling under New York law.
The filings highlight the platforms' acceptance of wagers from individuals aged 18 to 20, a point that is quickly becoming a separate legal flashpoint distinct from the federal preemption debate. Unlike most other states, New York is also pursuing an accounting, disgorgement and restitution of all illegally obtained gains, along with civil penalties. The financial exposure is material.
The CFTC moved quickly in response, suing New York on April 24, 2026, seeking a permanent injunction to prevent the state from enforcing its gambling laws against federally registered platforms. Kalshi also has a separate federal preemption case pending in the Southern District of New York, filed in October 2025, with a ruling expected in the near term. New York is therefore simultaneously a state enforcement battleground and a federal preemption test case.
While other states have turned to the courts, Kentucky chose a different approach. A law enacted in April 2026 prohibits any licensed gaming operator from doing business with platforms that offer prediction markets in the state. Rather than challenging platforms directly, the law targets the licensed operator relationships that allow prediction market platforms to maintain commercial presence.
The broad language of the legislation creates real complexity for operators and suppliers trying to determine whether they can continue to operate in Kentucky while federal litigation elsewhere is still live. It is also significant as a test case: if Kentucky's legislative route succeeds in curtailing the industry even where federal preemption injunctions hold in court, it provides a model that other states can replicate without waiting for the litigation to resolve. Minnesota has already gone further, making prediction market operation a criminal felony from August 1, 2026. Kentucky may be the first sign of a legislative strategy that bypasses the courts entirely.
Alongside state enforcement actions, tribal nations are pursuing their own legal challenges. The Ho-Chunk Nation in Wisconsin filed suit in August 2025 under IGRA; a federal judge ruled on May 11, 2026 that the tribe has the legal right to sue Kalshi. Three California tribes have appealed to the Ninth Circuit after a district court declined to issue a preliminary injunction: oral arguments are scheduled for July 10.
Most recently, four New Mexico tribes, the Mescalero Apache, Pueblo Isleta, Pueblo of Pojoaque, and Pueblo of Sandia, filed suit in May 2026 seeking injunctive relief and civil penalties from Kalshi for offering sports-event contracts on tribal lands.
The IGRA cases raise different legal questions from the federal preemption arguments. Even if the CFTC wins the preemption battle, tribal nations may have independent grounds to restrict prediction market activity on or near their lands. This represents a separate legal risk that compliance and commercial teams should assess alongside the primary federal-state litigation.
The volume of concurrent cases and the speed at which new ones are being filed mean that prediction market litigation is genuinely difficult to track manually. In the month of May alone, four new cases were filed or reached significant milestones: Rhode Island (state enforcement and federal preemption complaints filed May 21), New Mexico tribes (IGRA complaint), CFTC v. Minnesota (filed May 19), and the Massachusetts SJC oral arguments (May 4).
For compliance teams, the immediate priorities are the Ninth Circuit Nevada ruling and the August 1 Minnesota deadline, both will arrive before the end of summer 2026 and will materially shift the landscape.
For commercial teams with US exposure, the state-by-state picture is increasingly complex. Some states have federal injunctions holding; others have those injunctions dissolved; a few now have criminal statutes in play. Any market entry or partnership decisions touching prediction markets or adjacent products need to account for which category each relevant state falls into and how quickly that can change.
Vixio is a regulatory intelligence platform purpose-built for the gambling industry. For more than 20 years, we have helped compliance, legal, and commercial teams at operators, suppliers, and platform providers monitor regulatory change, understand what it means for their business, and act before complexity becomes a commercial problem.
The prediction market litigation landscape is one of the most demanding compliance environments in US gambling history. More than 30 active cases. Multiple simultaneous court tracks. New filings every week. Rulings that shift state-level exposure overnight. Managing this manually, across regulator websites, court dockets, legal memos, and email threads, is not a scalable approach.
Vixio's U.S. Prediction Markets Litigation Tracker, combined with our broader US gambling regulatory coverage, gives teams a single, maintained, expert-led view of everything that matters, so the next development doesn't catch you off guard.
One of the biggest practical challenges this litigation creates is the sheer volume of sources teams need to watch. The Nevada Ninth Circuit appeal, the Massachusetts Supreme Judicial Court, the Minnesota August 1 deadline, the CFTC's suits against six states, the IGRA cases in California and New Mexico, each involves different courts, different procedural timelines, and different implications for different parts of your business.
Vixio's U.S. Prediction Markets Litigation Tracker consolidates every active case between prediction market platforms and state or tribal government entities in one place, updated as developments occur. Each case is summarised with its current status, Pending, Ruling Released, or On Appeal, the legal issue at play, and an indicative direction based on the most recent substantive ruling.
This means your team is not rebuilding the picture from scratch every time something moves. You start from a current, accurate baseline and focus on what changed, and what it means.
Beyond the Litigation Tracker, Vixio's horizon scanning covers the full US gambling regulatory landscape, including legislative developments, attorney general activity, tribal gaming, and CFTC regulatory actions. When a state attorney general signals enforcement intent before a formal filing, when a new bill is introduced that could affect prediction market viability, or when a CFTC brief is filed that shifts the preemption argument, your team sees it in context, not in isolation.
The challenge is not finding information about this litigation. Court filings and legal commentary are publicly available. The challenge is understanding, quickly and reliably, which developments are commercially material to your specific business, and what, if anything, you need to do about them.
Not every ruling requires the same response. A district court denying a temporary restraining order in Ohio creates a different exposure profile than the Ninth Circuit dissolving an injunction in Nevada. A state filing a civil enforcement action is a different risk from that same state making prediction market operation a criminal felony. Your team needs to be able to distinguish between developments that are informational, those that should inform planning assumptions, and those that require immediate assessment and action.
Vixio categorises every regulatory update, including litigation developments, into three tiers:
This structured approach means your team is not spending hours assessing every court filing. The developments that require action surface clearly. The ones that require monitoring are tracked. The ones that provide useful context are available when you need them.
For prediction markets specifically, this matters because the volume of filings and rulings is high and accelerating. In May 2026 alone, four significant developments occurred within weeks of each other. Teams relying on manual monitoring will struggle to keep pace, and the cost of missing a material development in this landscape is not abstract.
Knowing what changed is only part of the job. The harder part is translating that into coordinated action across legal, compliance, and commercial teams, and being able to demonstrate, when asked, exactly what your team reviewed, what decisions were made, and what was done about it.
Vixio Workspace connects regulatory intelligence directly to workflow management. When a ruling lands that changes your state-level exposure, you can create a task from that development, assign it to the right owner, whether that's legal, compliance, product, or commercial, set a deadline, and track progress to completion. The regulatory development and the internal response are linked in one place, not scattered across email threads and spreadsheets.
For a litigation landscape as fast-moving as this one, that connectivity matters. Consider the Minnesota situation: a criminal felony law taking effect August 1, with a CFTC challenge and Kalshi TRO in motion simultaneously. A team using Vixio can create a structured workstream directly from that development, tracking the court proceedings, assigning internal assessment tasks, setting a pre-August deadline for a go/no-go decision on Minnesota operations, and maintaining a clear record of every step taken. If the law takes effect, or is blocked, the team's response is documented and traceable.
This also matters for governance. When the board, an auditor, or a regulator asks what your team did in response to a specific court ruling or legislative development, you are not rebuilding evidence from memory. You have a clear record of what was reviewed, who owned the action, what was decided, and when.
Vixio is trusted by 500+ organisations that need regulatory intelligence to work at the speed of the market.
When the US sports betting landscape opened up following the 2018 PASPA ruling, Kalshi's case opening the prediction market litigation in early 2025 produced a similarly complex, fast-moving, state-by-state compliance picture. Kambi used Vixio to decode US state-by-state requirements after PASPA and was among the first suppliers to penetrate targeted markets as a result, because they understood what applied, where, and when, before their competitors did.
The prediction market litigation is producing a comparable situation. The states where injunctions are holding, where they have been dissolved, where criminal statutes are in play, and where the picture is still forming are not static. They are changing week by week. The teams that move fastest and most confidently through this landscape will be the ones who know which states are viable, which are at risk, and which are closed, before that information becomes obvious to everyone.
Book a demo to see how Vixio's Litigation Tracker, horizon scanning, and workflow tools help your team stay ahead of this litigation and turn regulatory complexity into market readiness.
Whether prediction market platforms are federally regulated financial exchanges, subject exclusively to CFTC oversight under the Commodity Exchange Act, or unlicensed sports wagering operations subject to state gambling laws. Federal courts have reached conflicting conclusions on this question, with the Third Circuit favoring platforms and several district courts in the Sixth, Ninth, and Fourth Circuits favoring states.
As of late May 2026, there are more than 30 active cases between prediction market platforms and state or tribal government entities, pending across state and federal courts. Vixio's U.S. Prediction Markets Litigation Tracker maintains a current summary of every case and its status.
Yes, and increasingly so. The Third Circuit has ruled for the platforms; multiple district courts in the Sixth, Fourth, and Ninth Circuits have ruled for the states; and the Ninth Circuit's pending Nevada ruling is expected to create a direct circuit split. A split between circuits on the same federal question is the standard trigger for Supreme Court review.
Minnesota's new law, signed by Governor Walz and taking effect August 1, 2026, makes operating or assisting in the operation of a prediction market a criminal felony. It is the first state to prohibit prediction markets through direct legislation rather than relying on existing gambling enforcement authority. The CFTC has sued to block it, and Kalshi has filed for a temporary restraining order. Whether a federal court halts the law before August 1 will be one of the most consequential near-term developments in this litigation.
The Ninth Circuit ruling on the Nevada consolidated appeal and the August 1 Minnesota deadline are the two most time-sensitive developments. Teams should also monitor the Massachusetts Supreme Judicial Court ruling (which will directly affect how the Illinois federal case proceeds) and the Arizona situation, where the criminal prosecution is currently barred but the underlying state charges remain live pending the Ninth Circuit outcome.
