Judge Rules Massachusetts Can Ban Kalshi’s Sports Prediction Markets

• A Massachusetts judge has ruled that Kalshi must stop offering sports-related prediction markets in the state.
• The ruling marks the first-ever legal decision of its kind against a prediction market platform in the United States.
• Kalshi argued its services are federally regulated but was found to be offering illegal sports bets under state jurisdiction.
• Over 80% of Kalshis trading volume comes from sports-related wagers, which now face disruption due to the court order.
• The ruling could encourage other states to take similar actions against platforms like Kalshi in the future.

A Massachusetts judge has ruled that Kalshi must halt its sports-related prediction markets in the state. This marks the first-ever legal decision of its kind against a prediction market platform in the U.S. The ruling comes after months of legal battles over whether platforms like Kalshi should be considered illegal sports betting operations.

Judge Issues Preliminary Injunction Against Kalshi

Judge Christopher Barry-Smith of Massachusetts issued a preliminary injunction against Kalshi, requiring the platform to stop offering sports-related wagers. The court found that Kalshi‘s operations resemble illegal sports betting, which falls under state jurisdiction. “The manner in which Kalshi’s contracts are offered mirrors other digital gambling experiences,” the judge wrote in the ruling.

Kalshi had previously marketed itself as a legal sports betting platform before shifting its branding to focus on event contracts. Despite Kalshi‘s argument that it operates as a federally regulated exchange, Massachusetts regulators believe the platform is offering unregistered sports bets. The ruling requires Kalshi to cease its sports-related markets in Massachusetts by Friday, according to the judge’s order.

Sports-related wagers account for over 80% of Kalshis total trading volume, with over $26 billion in transactions on its platform in just over a year. This large portion of its business faces disruption following the court order. While Kalshi operates under the jurisdiction of the Commodity Futures Trading Commission (CFTC), Massachusetts regulators argue its offerings violate state gambling laws.

Daniel Wallach, a gaming attorney, emphasized that the ruling could encourage other states to pursue similar actions against platforms like Kalshi. With sports-related prediction markets under increasing scrutiny, Kalshi could face more challenges ahead as other states consider regulatory measures.

Global Impact on Prediction Markets

The Massachusetts ruling is part of a wider global trend in regulating prediction markets. Last week, both Portugal and Hungary moved to ban Polymarket, another prediction market platform, accusing it of facilitating illegal gambling. The legal landscape for such platforms continues to evolve, with regulators taking steps to curb what they view as unregulated gambling operations.

As Kalshi prepares to comply with the Massachusetts injunction, the broader prediction market industry will likely face more challenges. Governments continue to explore how to regulate these platforms, which blur the lines between financial trading and gambling. Kalshis legal battle in Massachusetts could set a precedent for future cases involving prediction market platforms in the U.S.

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