Overview

• Massachusetts Attorney General Andrea Joy Campbell filed a 43-page Suffolk Superior Court complaint accusing KalshiEX of operating unlicensed sports betting and seeking injunctions, damages, and $5,000-per-violation civil penalties.
• The complaint alleges Kalshi’s moneyline, point-spread, and over/under event contracts mirror sportsbook wagers, allows users aged 18–20, and lacks mandated responsible-gaming safeguards and state oversight.
• Campbell’s office says more than $1 billion was risked on Kalshi sports markets in the first five months after launch, with roughly 70–75% of platform activity tied to sports and significant trading routed through Robinhood.
• Robinhood filed a federal suit arguing state gambling laws are preempted by the Commodity Exchange Act because trades occur on Kalshi’s CFTC-designated exchange, after Massachusetts cited about $1 billion in Q2 volume via its app.
• Massachusetts gaming regulators voiced support for enforcement efforts as split rulings in Nevada, New Jersey, and Maryland underscore unresolved questions now playing out in multi-state litigation.