Legal tracker / Massachusetts AG v. Kalshi
Case · as of Oct 15, 2026
Massachusetts AG v. Kalshi
For the states PI granted (stayed); SJC decision pending
The Superior Court allowed the AG's motion for a preliminary injunction barring Kalshi's sports contracts in Massachusetts on Jan. 20, 2026, but the injunction was stayed pending appeal. The Supreme Judicial Court heard argument May 4, 2026, with the CFTC and a multistate group of attorneys general filing amicus briefs on opposite sides, and had not ruled as of Sept. 30, 2026.
Case record last checked against its sources on Sep 30, 2026.
| Case | Commonwealth of Massachusetts v. KalshiEX LLC |
| Court | Massachusetts Supreme Judicial Court; Suffolk County Superior Court |
| Docket | SJC-13906 (Mass.); 2584CV02525 (Suffolk Super. Ct.) |
| Filed | 2025-09 |
| Type | Enforcement |
| Companies | Kalshi |
| Other side | Massachusetts Attorney General Andrea Joy Campbell |
| Last action | May 4, 2026: SJC heard oral argument. |
| Next date | : SJC decision. |
History
Newest first.
| Date | What happened |
|---|---|
| May 4, 2026 | SJC oral argument. |
| Apr 24, 2026 | CFTC filed an amicus brief supporting Kalshi. |
| Jan 20, 2026 | Superior Court allowed the AG's preliminary-injunction motion. |
Sources
- Massachusetts AG press release (PI) (primary)
- Cert petition (PDF), No. 26-299 (primary)
- CFTC amicus brief, SJC-13906 (PDF) (primary)
- CFTC press release 9219-26 (Mass. SJC filing) (primary)
- Multistate amicus brief, SJC (PDF, NY AG) (primary)
- News: InGame (SJC argument)
- Tracker: Mick Bransfield prediction-market litigation tracker
Massachusetts AG v. Kalshi: questions
What is the status of Massachusetts AG v. Kalshi?
PI granted (stayed); SJC decision pending. The Superior Court allowed the AG's motion for a preliminary injunction barring Kalshi's sports contracts in Massachusetts on Jan. 20, 2026, but the injunction was stayed pending appeal. The Supreme Judicial Court heard argument May 4, 2026, with the CFTC and a multistate group of attorneys general filing amicus briefs on opposite sides, and had not ruled as of Sept. 30, 2026.
What happened most recently in Massachusetts AG v. Kalshi?
May 4, 2026: SJC heard oral argument.
What is the next date in Massachusetts AG v. Kalshi?
: SJC decision.
Compiled from court dockets, opinions, regulator releases and news coverage, linked above. Not legal advice. Massachusetts: every action · All cases · Interactive tracker