Wisconsin DOJ Takes Legal Action Against Kalshi and Prediction Market Platforms Over Alleged Illegal Sports Betting

April 25, 2026 - 01:49

The Wisconsin Department of Justice has filed lawsuits against several prominent prediction market platforms, including Kalshi, Robinhood, Coinbase, Polymarket, and Crypto.com, accusing them of unlawfully facilitating online sports betting. The announcement, made this week, alleges that these companies have been operating outside the bounds of state gambling laws by allowing users to place wagers on the outcomes of sporting events through their platforms.

According to the Wisconsin DOJ, the platforms in question have been offering contracts and markets tied to real-world sports results, which the state considers a form of illegal gambling. Wisconsin law strictly regulates sports betting, and the state argues that these prediction markets bypass established legal frameworks designed to protect consumers and ensure fair play. The lawsuit seeks to halt these operations within Wisconsin and may impose financial penalties for past violations.

The action targets a growing trend where prediction markets, often marketed as tools for forecasting events like elections or economic indicators, have expanded into sports-related contracts. The Wisconsin DOJ contends that this blurs the line between legitimate forecasting and unlicensed gambling. The case highlights ongoing tensions between state regulators and digital platforms that operate in a regulatory gray area, particularly as online betting becomes more accessible. The companies named in the suit have not yet issued formal responses, but the legal challenge could set a precedent for how prediction markets are treated under state gambling laws nationwide.