Kalshi Hit with Class-Action Lawsuit in Massachusetts

Leading prediction market platform Kalshi now faces another legal challenge in Massachusetts, where a bettor claims the company is operating in violation of state gambling law. The lawsuit, filed at Suffolk Superior Court, charges Kalshi with running an unlicensed sportsbook operation while presenting itself as a financial exchange.

Kalshi Allegedly Lacks Critical Consumer Safeguards

The plaintiff, who resides in Raynham and is in his 40s, alleges he lost tens of thousands of dollars in a single month earlier this year while placing sports-related trades within the platform. According to the legal challenge, sports-related prediction markets mirror traditional sports betting. Users deposit money, predict the outcome of a game, and either lose their stake or collect a fixed payout.

The lawsuit contends that Kalshi’s insistence that these contracts constitute derivatives doesn’t change their nature. This distinction matters in Massachusetts. The state tightly regulates sports wagering, limiting it to licensed operators. The lawsuit claims that Kalshi bypasses this framework and avoids requirements imposed on sportsbooks, including consumer safeguards designed to limit harm.

According to the plaintiff, he had previously enrolled in self-exclusion programs that block access to regulated betting platforms and casinos. However, Kalshi operates under federal oversight rather than state gaming rules. The filing alleges that the regulatory gap allowed him to resume wagering despite efforts to step away.

A Previous Complaint Raised Similar Allegations

The complaint seeks to recover losses not only for the plaintiff but for a broader group of users who may have had similar experiences. It also calls for the company to stop offering sports-related markets in Massachusetts unless it obtains the same type of license required of sportsbooks.

This challenge is not the first time Kalshi has faced such criticism. A separate class-action case filed earlier this year raised similar claims, accusing the company of blurring the line between investing and gambling. One plaintiff in that case claimed he was able to use the service despite being banned from betting apps in his home state, echoing concerns raised in the Massachusetts filing.

Kalshi’s position relies on its federally regulated status. The company operates under the oversight of the Commodity Futures Trading Commission, which allows it to offer event-based contracts across the USA. That structure has allowed Kalshi to expand rapidly. However, it has also created tensions with states seeking to maintain strict control over sports wagering within their borders.