The battle over prediction markets has officially reached the doorstep of America’s highest court. New Jersey has become the first state to ask the U.S. Supreme Court to decide whether platforms like Kalshi can offer sports-event contracts nationwide under federal regulation or whether individual states still have the authority to regulate those markets as sports gambling.
The case could have enormous consequences for the rapidly growing prediction-market industry because federal appeals courts have now issued conflicting decisions on the same basic question. If the Supreme Court takes the case, its eventual ruling could determine whether Kalshi and similar platforms operate primarily under one federal regulator or potentially dozens of state gambling regimes.
New Jersey Wants the Supreme Court to Settle the Fight
New Jersey Attorney General Jennifer Davenport and state gaming officials filed a petition asking the Supreme Court to review an April decision from the U.S. Court of Appeals for the Third Circuit.
That ruling favored Kalshi, finding that the Commodity Futures Trading Commission’s exclusive federal jurisdictionover swaps and derivatives preempted New Jersey’s attempt to regulate Kalshi’s sports contracts under state gambling laws.
New Jersey disagrees.
The state argues that Congress never intended the Commodity Exchange Act or the Dodd-Frank reforms passed after the 2008 financial crisis to effectively federalize sports gambling across the country.
At the heart of the case is a deceptively simple question:
Is a contract predicting the winner of a football game a federally regulated financial derivative or a sports bet regulated by the state?
The answer could reshape the entire prediction-market industry.
Two Federal Courts Have Now Reached Opposite Conclusions
The Supreme Court request comes at a particularly important moment because federal appeals courts are now split.
In April, the Third Circuit sided with Kalshi in its New Jersey case, determining that sports-event contracts qualify as swaps falling under the CFTC’s jurisdiction.
But last week, the Ninth Circuit Court of Appeals reached the opposite conclusion in Kalshi’s dispute with Nevada.
A unanimous three-judge panel ruled that Nevada could enforce its gambling laws against Kalshi’s sports markets.
That created what’s known as a circuit split — when different federal appeals courts interpret the same federal law differently.
The current landscape essentially looks like this:
- Third Circuit → federal regulation can preempt state gambling laws
- Ninth Circuit → states can enforce gambling laws against sports prediction markets
- New Jersey → wants the Supreme Court to resolve the contradiction
- Kalshi → argues the CFTC has exclusive authority over its federally regulated exchange
Circuit splits are one factor that can make a case more attractive for Supreme Court review, although the justices are under no obligation to hear it.
Kalshi Says It Can’t Answer to 50 Different Regulators
Kalshi’s position is built around its status as a federally regulated Designated Contract Market overseen by the CFTC.
Unlike DraftKings or FanDuel, Kalshi doesn’t describe its products as traditional wagers. Users buy and sell event contracts whose value depends on whether a particular outcome occurs.
That structure allows markets covering everything from elections and economic data to sports.
Kalshi spokesperson Dani Lever defended the company’s position following New Jersey’s filing, arguing that Kalshi operates as a nationwide financial exchange and cannot realistically function under 50 separate regulatory systems.
New Jersey sees the situation very differently.
The state argues that Kalshi has effectively created a federal pathway around state sports-betting laws, allowing sports wagering without complying with state licensing requirements, taxes and consumer-protection rules.
The Fight Is Much Bigger Than New Jersey
Kalshi’s legal problems aren’t limited to one state.
The company has faced regulatory challenges around the country as state gaming authorities attempt to determine whether its sports-event contracts fall under their jurisdiction.
Kalshi has been involved in disputes with at least 20 states, according to reporting on the Supreme Court petition.
Some states have already succeeded in restricting access.
Washington customers, for example, have been blocked from using Kalshi while the company continues fighting the state’s regulatory action in court.
The CFTC, meanwhile, has increasingly defended federal jurisdiction over prediction markets and has challenged state attempts to regulate the industry.
That means the legal battle isn’t simply:
New Jersey vs. Kalshi
It’s increasingly becoming:
State gambling regulators vs. the federal derivatives regulatory system.
Billions of Dollars Could Depend on the Answer
The stakes have grown dramatically because prediction markets aren’t a niche crypto experiment anymore.
Sports-event contracts have become one of the industry’s biggest growth engines, allowing users to trade on outcomes using a market structure that resembles both derivatives trading and traditional betting.
New Jersey warned the Supreme Court that the dispute could determine whether a multibillion-dollar gaming industrycan operate outside state sports-gambling laws.
The competitive implications are significant as well.
Traditional sportsbooks like DraftKings and FanDuel operate under state-by-state licenses, pay state gaming taxes and comply with individual state restrictions.
Prediction markets argue they’re different financial products regulated federally.
If Kalshi’s interpretation ultimately wins, federally regulated prediction markets could potentially offer sports contracts nationwide without building the same state-by-state regulatory structure used by sportsbooks.
If New Jersey wins, prediction platforms could instead find themselves navigating many of those same state gambling laws.
The Supreme Court Hasn’t Agreed to Hear the Case Yet
New Jersey filing its petition doesn’t mean the Supreme Court has accepted the case.
The justices must first decide whether to grant certiorari, the formal process through which the Supreme Court agrees to review a lower-court decision.
There’s also a procedural wrinkle.
Both the New Jersey and Nevada appellate decisions emerged from disputes involving preliminary injunctions rather than final judgments on the full merits, which could give the Supreme Court a reason to wait until the cases progress further.
But the contradictory appellate rulings mean the same federally regulated prediction product could potentially receive different legal treatment depending on where someone lives.
That makes a nationwide resolution increasingly difficult to avoid.
Prediction Markets Could Be Headed for Their Biggest Legal Decision Yet
Prediction markets have spent the past several years expanding faster than regulators have been able to establish clear boundaries around them.
Now those boundaries could ultimately be drawn by the Supreme Court.
The decision wouldn’t merely determine whether Kalshi can continue offering sports contracts in New Jersey. It could establish who has the final regulatory authority over sports prediction markets throughout the United States.
A Kalshi victory could strengthen the argument that federally regulated prediction markets belong primarily under the CFTC, potentially giving them a national regulatory framework.
A New Jersey victory could restore significant authority to individual states and force prediction platforms to navigate the same patchwork of gambling regulations that sportsbooks have dealt with for years.
Prediction markets have spent years debating whether they’re financial markets or gambling. New Jersey now wants the Supreme Court to finally pick a side.