Commonwealth of Massachusetts v. KalshiEX LLC

Injunction granted (stayed pending SJC review)State v. Platform

Docket last checked September 26, 2026. Snapshot — not legal advice.

As of September 27, 2026, the legality of prediction markets in Massachusetts is unresolved — litigation is ongoing with no final ruling yet. Massachusetts status and cases →

Overview

Attorney General Andrea Joy Campbell secured a preliminary injunction (January 2026) barring Kalshi from offering unlicensed sports event contracts to Massachusetts users; the judge called Kalshi’s reading of CFTC oversight "overly broad" and found Congress did not clearly displace state gambling police powers. The Massachusetts Supreme Judicial Court granted direct appellate review and heard argument (May 2026); no decision has issued. The injunction is stayed pending appeal, so the platform still operates in-state; the decision is pending. (Docket confirmed: Suffolk County Superior Court No. 2584CV02525, Business Litigation Session, before Judge Barry-Smith; a separate private-plaintiff SJC case, Jackson v. Campbell, is not this action.)

Timeline

January 2026

Judge Barry-Smith grants the AG a preliminary injunction against unlicensed sports event contracts.

February 2026

Kalshi appeals; SJC grants direct appellate review; the injunction is stayed pending appeal.

May 2026

The Supreme Judicial Court hears argument on direct appellate review; no decision has issued.

What's next: SJC decision pending; the injunction remains stayed while the appeal is decided.

Parties

Plaintiffs

  • Commonwealth of Massachusetts (Attorney General Andrea Joy Campbell)

Defendants

  • KalshiEX LLC
This page is informational, not legal advice. Nearly every entry in this tracker is a preliminary ruling under appeal. Always verify a platform's current, location-specific eligibility directly with the venue before relying on this page.