Michigan court blocks Kalshi prediction markets, citing illegal sports betting
Quick Look
- Michigan Attorney General Dana Nessel announced a state court issued a preliminary injunction blocking Kalshi from offering event contracts to residents, alleging the platform operates as unlicensed sports betting.
- The order follows a June restraining order and comes amid a broader legal battle between prediction market platforms and U.S. state authorities over jurisdiction, with New Jersey also petitioning the U.S.
- Supreme Court to hear a related case.
AI-generated summary
Why It Matters
Prediction market platforms like Kalshi and Polymarket have faced increasing scrutiny from U.S. state authorities who argue their event contracts resemble illegal sports betting, while the platforms claim they are regulated financial products overseen by the CFTC.
Michigan’s attorney general announced that a state court had ordered a preliminary injunction against Kalshi, blocking the prediction markets platform for residents amid what officials called “sports betting [...] masquerading as an investment opportunity.”
In a Wednesday notice, Attorney General Dana Nessel said that the Circuit Court for the 30th Judicial Circuit in Ingham County approved an order blocking Kalshi from offering event contracts to state residents. The company could be fined up to $500,000 per day for violations.
“Kalshi long attempted to pass itself off as a legitimate gaming operation in our state, and I am relieved that this order further protects Michigan residents from its predatory, unlicensed practices,” said Nessel.
The Michigan court’s actions were the latest in a series of legal battles between prediction market companies like Kalshi and Polymarket and US state authorities. Nessel filed the lawsuit against Kalshi in March, alleging that the platform violated state law on sports gambling — a claim made in many similar lawsuits across the country.
Related: Kalshi issues first lifetime ban for Republican politician over insider bets
Notably, the preliminary injunction followed a Michigan court’s June restraining order barring Kalshi from offering sports betting to residents. The US Commodity Futures Trading Commission (CFTC) ordered Kalshi not to comply with the state order and continue operating, an action that the company described as putting it in an “impossible position.”
Cointelegraph reached out to Kalshi for comment but did not receive an immediate response.
New Jersey petitions US Supreme Court to weigh in on prediction markets
The Michigan state court order came the same day officials in New Jersey announced they had filed a petition for a writ of certiorari to the US Supreme Court over the state’s case against Kalshi. The case, if heard by the justices, could potentially end competing legal theories on whether the CFTC or state authorities have jurisdiction over prediction markets.
“[I]t would be reasonable for the Supreme Court to take it up, but they also may wait for the cases to be decided on the merits and not simply procedural issues like granting a preliminary injunction or not,” Melinda Roth, a visiting professor of practice at New England Law in Boston, told Cointelegraph. “Nevertheless, I still believe the Supreme Court will take this up, if not from New Jersey’s cert petition, then soon, given the amount of ongoing litigation in this area.”
Roth added:
“If and when SCOTUS takes it up, then this will likely decide whether sports event contracts are federally regulated by the CFTC or the states have the right to ban and/or regulate them as they see appropriate. I say ‘likely’ because Congress might actually act too. They could act before a SCOTUS review, or even after too.”
Some US lawmakers have proposed legislation to address Kalshi and Polymarket customers using insider information on event contracts. In March, Senators Adam Schiff and John Curtis introduced a bill to prohibit platforms registered under the CFTC from listing any event contract that “resembles a sports bet or casino-style game,“ referring jurisdiction to individual states’ authorities.
What to Watch
AI outlook — possibilities, not facts
The U.S. Supreme Court will agree to hear New Jersey's petition on prediction market jurisdiction.
Possible · Within months
Congress may pass legislation to address insider trading on prediction markets before or after a Supreme Court review.
Possible · Within months
Open Questions
- Will the U.S. Supreme Court agree to hear New Jersey's petition on prediction market jurisdiction?
- How will the CFTC respond to ongoing state-level injunctions against Kalshi?
- Will Congress pass legislation to clarify regulatory authority over prediction markets?







