Prediction markets are no longer a peripheral experiment in forecasting. They now sit at the center of a direct legal conflict between federal derivatives regulation and state gambling law. The question is not whether people can trade contracts on future events. It is who holds legal authority over those contracts when a federally regulated exchange lists them and a state calls them gambling.
The strongest legal argument for prediction markets comes from the Commodity Exchange Act. The Act defines “swap” broadly enough to include certain contracts whose value depends on whether a future event occurs, does not occur, or occurs to a certain extent, provided the event is associated with a potential financial, economic, or commercial consequence. The Act also grants the Commodity Futures Trading Commission exclusive jurisdiction over swaps and futures traded on federally registered market infrastructure.
That federal argument, however, has a built-in limit. The Commodity Exchange Act contains a special event-contract rule. It allows the CFTC to prohibit event contracts involving gaming, unlawful activity, terrorism, assassination, war, or similar activity when the Commission determines that the contracts are contrary to the public interest. CFTC Rule 40.11 implements that framework.
The procedural route also matters. A designated contract market may list a product through self-certification, but self-certification requires the exchange to submit product terms, certify compliance, and provide analysis showing how the product satisfies the Commodity Exchange Act and CFTC regulations.
The central legal fight is therefore one of classification. If an event contract is a federally regulated derivative traded on a registered market, the platform can argue that state gambling regulators have no power to prohibit it. If the same contract is treated as a wager, the state can argue that the platform is offering gambling without a gaming license.
Judicial Developments
The Third Circuit has given the prediction-market industry its strongest judicial authority. In Kalshi’s dispute with New Jersey, the court held that Kalshi had shown a reasonable likelihood of proving that the Commodity Exchange Act preempts otherwise applicable state law. The court treated Kalshi’s sports-event contracts as swaps traded on a CFTC-licensed designated contract market and concluded that state law could not directly interfere with that federally regulated trading.
The pro-federal side also secured a preliminary win in Arizona. A federal court temporarily restrained Arizona officials from pursuing criminal enforcement against CFTC-regulated designated contract markets, finding that the CFTC had made a clear showing that Arizona gambling laws were likely preempted as applied to the event contracts at issue. That order is preliminary rather than a final merits judgment, but it reinforces the immediate federal-preemption line of authority.
That is not the only judicial view. Federal district courts in Maryland and Ohio declined to grant Kalshi the same protection. Maryland held that Kalshi had failed to show a likelihood of success on its claim that the Commodity Exchange Act preempts Maryland gaming law. Ohio held that Kalshi had failed to clearly establish that its sports-event contracts fell within the CFTC’s exclusive jurisdiction.
The Ohio case has become especially important because the CFTC filed a Sixth Circuit amicus brief on 2026-05-12 supporting reversal. The CFTC argues that sports-event contracts can qualify as swaps, that no separate hedging requirement appears in the statute, and that state law is preempted when applied to event contracts traded on CFTC-regulated markets.
The State-Law Theory
New York illustrates how strong the state-law theory can be. New York law defines gambling broadly as risking something of value on a contest of chance or future contingent event outside the bettor’s control. The state also maintains a specific licensing regime for mobile sports wagering, including a minimum age requirement and limits on prohibited sports events.
In 2026, the New York Attorney General sued Coinbase Financial Markets and Gemini Titan, alleging that their prediction-market products constituted illegal gambling and unauthorized sports wagering. The pleadings allege that users could take yes-or-no positions on sports and other future events, that outcomes were outside the users’ control, and that the companies lacked New York Gaming Commission authorization.
If federal preemption is set aside, New York’s theory is straightforward. A retail contract on the Knicks, the Super Bowl, a college game, an election, or an entertainment result looks like a wager under a broad gambling statute. The unresolved question is whether New York can apply that gambling definition to contracts traded through CFTC-regulated infrastructure.
The CFTC is now pressing the opposite answer in court. In 2026, it sued several states, including New York, Arizona, Connecticut, Illinois, and Wisconsin, to halt state enforcement against CFTC-regulated prediction markets. In its New York complaint, the CFTC alleges that event contracts traded on CFTC-regulated exchanges are subject to exclusive federal jurisdiction and that at least eight CFTC-regulated designated contract markets had self-certified more than 3,000 event contracts as of the filing date.
Regulatory Posture and Operational Architecture
The CFTC’s 2026 regulatory materials suggest that the agency does not intend to permit every prediction market without constraint. The agency issued a prediction-markets advisory and opened an advance notice of proposed rulemaking seeking comment on contract design, market surveillance, manipulation, settlement data, clearing, reporting, position limits, and prohibited-event categories.
A new operational development came on 2026-05-13, when CFTC staff issued a no-action letter on certain swap-data reporting and recordkeeping requirements for fully collateralized event contracts. The letter applies to covered contracts listed on a designated contract market and cleared through a derivatives clearing organization, subject to conditions that include public trade data, CFTC transactional information access, and continued compliance with other reporting and recordkeeping obligations. The letter is interim and remains in place until final rulemaking on event-contract reporting issues.
That no-action letter does not resolve the gambling-law preemption fight. It does, however, show that the CFTC is moving from pure jurisdictional assertion toward operational regulation. The agency is building the reporting, clearing, surveillance, and data architecture needed to supervise event-contract markets as derivatives markets.
Product Design and Market Abuse Risk
Product design will likely determine legal durability. A broad contract on inflation or weather is different in kind from a contract on whether a player will be injured, whether a referee will make a particular call, or whether a performer will win an award. The CFTC’s 2026 staff advisory warns that cash-settled event contracts can create incentives to manipulate or influence the underlying event, particularly where the outcome depends on injuries, conduct, officiating, or a single actor or small group. Broad sports outcomes may be easier to defend than granular props because they are harder for any one person to manipulate. Narrow markets tied to individual conduct, injuries, internal decisions, or nonpublic information are far more vulnerable.
In 2026, the CFTC brought what it described as its first insider-trading case involving event contracts, alleging that an active-duty service member traded Polymarket contracts using classified information about military action. The case demonstrates that the CFTC views event-contract markets as capable of producing the market-abuse problems familiar from derivatives and securities law.
Election markets present a distinct risk profile. They may not resemble sports betting in the same way, but they raise public-interest concerns about election integrity, misinformation, public trust, and incentives surrounding political events. In 2023, the CFTC disapproved Kalshi’s congressional-control contracts, finding that they involved gaming and were contrary to the public interest. A later court ruling undercut that order, and the D.C. Circuit denied the CFTC’s request for a stay, but that stay ruling did not establish a final national rule permitting all election markets.
Unregistered or off-exchange platforms face a separate problem. The CFTC’s current no-action posture is framed around contracts listed on designated contract markets and cleared through derivatives clearing organizations. That structure gives registered exchanges a materially stronger legal position than platforms operating outside the federal market framework.
A Category-Based Future
The probable outcome is a category-based system. Economic, weather, inflation, freight, energy, climate, agricultural, and macroeconomic contracts are the most likely to survive as federally regulated derivatives. They have the clearest connection to hedging, commercial exposure, and price discovery.
Sports markets remain the central battleground. Broad game-winner or championship contracts may survive in some federal forums, especially where courts follow the Third Circuit or Arizona reasoning. They remain exposed in forums that follow the Maryland or Ohio reasoning. Even if broad sports contracts survive, player props, injury markets, officiating markets, penalty markets, and other narrow sports contracts are likely to face stronger restrictions because they carry higher manipulation and gambling-law risks.
Election markets will remain legally unstable. They may be useful for forecasting, but they implicate election integrity and public-interest concerns that give both the CFTC and the states stronger grounds for restriction. Entertainment and awards markets are similarly vulnerable because they have weaker hedging value and heightened insider-information risk.
The most likely legal settlement is not total victory for either side. Federal law will likely protect some event contracts traded on registered CFTC markets. State law will likely continue to apply to unregistered platforms, gambling-like products outside the federal market structure, and collateral consumer-protection issues. The harder question is whether states can impose age limits, advertising rules, responsible-gaming duties, fraud rules, and other neutral requirements without directly prohibiting federally listed contracts.
Prediction markets are therefore entering a classification era. The legal outcome will depend on the contract, the platform, the forum, the settlement data, the manipulation risk, and the CFTC’s final rulemaking. The industry’s strongest future is not as unregulated gambling by another name. It is as a federally supervised derivatives market with clear product limits, reliable settlement mechanisms, surveillance duties, and a narrower set of event categories that can survive both federal public-interest review and state-law challenge.
