New Jersey’s Kalshi petition gives the Supreme Court a circuit split on prediction markets

New Jersey has taken the legal fight over prediction markets to the US Supreme Court. In a petition announced on September 2, 2026, the state asked the justices to decide whether sports-related contracts offered by Kalshi are gambling products subject to state law or swaps overseen by the Commodity Futures Trading Commission.

The petition does not mean the Supreme Court will hear the case. It does, however, give the court a direct circuit split. The Third Circuit sided with Kalshi in April. The Ninth Circuit later reached the opposite conclusion in a Nevada-related dispute. That conflict goes to the core of the prediction market business model: whether a CFTC-registered venue can offer sports contracts nationwide without obtaining state gambling licenses.

What New Jersey asked the Supreme Court to decide

The petition for a writ of certiorari asks whether the 2010 Dodd-Frank Act preempts states from regulating sports bets placed within their borders when those bets are offered on markets registered with the CFTC.

New Jersey argues that states have historically held primary authority over gambling. The state says Kalshi’s position would allow a company to avoid the sports-gambling laws of all 50 states by self-certifying contracts on a federally registered market. The petition describes that outcome as an unprecedented transfer of authority over a multibillion-dollar industry to a federal agency with no gambling expertise.

Kalshi argues that its contracts fall under federal commodities regulation. The dispute concerns whether that oversight displaces state gambling requirements for sports-related event contracts.

Why the Third and Ninth Circuit split matters

The Third Circuit ruled for Kalshi in April, holding that the Commodity Exchange Act likely preempts New Jersey’s sports-gambling laws as applied to the company’s sports-related contracts. The divided panel treated the contracts as swaps and said federal law displaces state gambling rules on CFTC-registered markets.

The Ninth Circuit later rejected that reasoning in a separate case involving Nevada. It held that Dodd-Frank does not preempt state gaming laws and explicitly disputed both the Third Circuit’s methodology and its conclusion. That disagreement gives the Supreme Court the kind of conflict it often looks for when deciding whether to grant review.

Carl Kennedy, a partner at Katten, told CoinDesk that New Jersey was already entitled to appeal the Third Circuit ruling, but the Ninth Circuit decision gives the issue more momentum. Katherine Kirkpatrick Bos, head of legal at Chainlink Labs, said the litigation is materially affecting an entire industry’s business model.

The Bit Journal has also covered Polymarket’s proposed margin-trading framework, a separate example of the regulatory questions facing event-contract platforms.

How Kalshi frames its contracts

Kalshi offers event contracts that pay out based on whether a defined event occurs. Users can buy yes or no positions on politics, economics, entertainment and sports. The company says these contracts are financial instruments listed on a federally regulated exchange, not bets subject to state gambling rules.

The states challenging that model argue that federal exchange registration should not displace their authority over sports wagering. The disagreement concerns the legal classification of the product as well as which regulator has authority over it.

Why states say gambling law still applies

New Jersey’s petition relies heavily on federalism. It says the Supreme Court’s 2018 Murphy v. NCAA decision confirmed that states may make their own choices on sports betting. New Jersey argues that Congress did not silently reverse that framework when it amended the Commodity Exchange Act through Dodd-Frank.

The states’ concern is not limited to tax revenue. State gambling regimes generally include age limits, responsible gambling rules, insider betting restrictions, licensing checks and enforcement powers. New Jersey says those safeguards could be weakened if a CFTC registration is enough to bypass state law.

What this means for the market

A Supreme Court decision to hear the case would create uncertainty for every company offering sports-related event contracts in the US. A ruling for the states could require prediction market firms to seek licenses state by state, adjust products or leave some jurisdictions. It could also strengthen the position of regulated sportsbooks that already pay state taxes and comply with local rules.

A ruling for Kalshi could accelerate the national expansion of prediction markets under CFTC oversight. It could also trigger political pushback from states, tribes and gambling operators that see the model as an end run around local law. Either outcome would have implications beyond sports, because the same legal theory could affect other event contracts.

The immediate market question is procedural. The Supreme Court may deny certiorari, wait for more appellate rulings or take the case. CoinDesk reported that lawyers see the circuit split as significant, but some said the justices could wait for the Fourth or Sixth Circuits, or for the CFTC to finish its event-contract rulemaking.

Legal risks and what to watch

The first risk is timing. A certiorari petition is not a merits ruling, and the court may simply decline review. Kalshi will have an opportunity to respond, and the initial briefing will focus on whether the court should hear the case at all.

The second risk is scope. A narrow decision could address only sports contracts on CFTC-registered markets. A broader decision could reshape the boundary between state gambling law and federal commodities regulation. The third risk is regulatory overlap. Even a federal ruling may not settle every state tax, licensing or consumer protection question.

The next milestones are Kalshi’s response, any additional appellate decisions and the CFTC’s work on event-contract rules. For market participants, the practical question is not only who wins. It is whether the industry receives a single national framework or a state-by-state compliance map.

FAQ

Has the Supreme Court agreed to hear the case?

No. New Jersey has filed a petition for certiorari. The Supreme Court must first decide whether to take the case. A decision to grant review would only begin the merits stage.

What is the legal question?

The question is whether the Dodd-Frank Act preempts state gambling laws when sports-related contracts are offered on a CFTC-registered market. The answer could determine whether prediction markets need state gambling licenses.

Why is there a circuit split?

The Third Circuit ruled that federal commodities law likely preempts New Jersey’s gambling rules as applied to Kalshi. The Ninth Circuit later held that Dodd-Frank does not preempt state gaming laws, creating a direct disagreement.

What could happen if the states win?

Prediction market companies could need state licenses, approvals and tax arrangements to offer sports contracts. They could also face product restrictions or leave jurisdictions where licensing is unavailable.

What could happen if Kalshi wins?

A Kalshi victory could support a national CFTC-regulated model for sports event contracts. It could also reduce the ability of states to apply their gambling laws to contracts listed on federally registered markets.

This article is for information only and is not legal or investment advice. Court filings describe allegations and legal arguments, not final judicial findings.