Massachusetts AG seeks to expand Kalshi suit with underage, self-exclusion claims
Massachusetts Attorney General is seeking to expand its ongoing lawsuit against Kalshi by adding claims tied to underage users and self-excluded individuals, according to filings reported June 24–26, 2026. The proposed amendments broaden the state's legal challenge beyond its original scope to include allegations that Kalshi failed to protect minors and individuals on the self-exclusion list. Massachusetts is among several states battling prediction market platforms over sports-related event contracts. The expanded claims represent a new angle in state enforcement against federally registered prediction market operators, focusing on consumer protection rather than gambling classification alone. Kalshi now faces this expanded Massachusetts action alongside separate legal fights in multiple other states.
Kalshi must now defend against underage-user liability in Massachusetts while fighting gambling-enforcement suits in New Mexico and Kentucky and a tax challenge in Illinois. Any adverse ruling on the consumer-protection claims could force Kalshi to implement age-verification and self-exclusion systems that its CFTC-registered competitors would then also have to match.
Joins New Mexico, Kentucky, and Illinois as the fourth state-level legal front Kalshi is fighting this week, with each state pressing distinct theories — gambling enforcement, licensing taxes, and now underage-user claims — that compound the platform's compliance burden regardless of the CFTC's parallel preemption cases.