Ho-Chunk Nation sues Kalshi and Robinhood over alleged sports betting
Ho-Chunk Nation filed a lawsuit against Kalshi and Robinhood in Wisconsin federal court on 20 August 2025, alleging they offered unlicensed sports wagers on tribal lands. The tribe seeks to stop the activity and obtain damages and court rulings, and said Kalshi processed more than 5.2 million sports-contract trades worth about $1.6bn in 2025.
The case challenges whether the companies can offer sports event contracts on tribal lands without a gaming compact.