Prediction Market Litigation — All Cases

Every tracked lawsuit shaping whether CFTC-regulated prediction-market platforms can operate, state by state — grouped by significance.

Last updated August 16, 2026. Snapshot — not legal advice.

Landmark Cases (14)

Circuit-split anchors and cases with a real appellate or settled outcome.

KalshiEX LLC v. WilliamsNY
Injunction denied; on appeal (2d Cir.)
KalshiEX LLC v. Schuler (6th Cir., consolidated with the Tennessee appeal)TN, OH
Argued; decision pending
KalshiEX LLC v. Nevada Gaming Control BoardNV
Geofencing settlement (effective Aug. 2026)
State of Washington v. KalshiEX LLCWA
Amended preliminary injunction in effect
Blue Lake Rancheria v. Kalshi, Inc.CA
Tribes’ injunction denied; on appeal (9th Cir.)
Challenge to Minnesota’s prediction-market banMN
Statute enjoined; not in effect
People of the State of New York v. KalshiEX LLCNY
Filed — special proceeding
KalshiEX LLC v. MartinMD
Injunction denied; on appeal (4th Cir.)
Commonwealth of Massachusetts v. KalshiEX LLCMA
Injunction granted (stayed pending SJC review)
KalshiEX LLC v. JohnsonAZ
Criminal prosecution enjoined (preliminary injunction)
Ho-Chunk Nation v. Kalshi, Inc.WI
IGRA claim advancing; PI denied; trial 2027
KalshiEX LLC v. FlahertyNJ
Injunction affirmed (preliminary)
United States v. State of ConnecticutCT
Pending — no injunction confirmed
United States v. State of IllinoisIL
Pending — no final ruling

Standard Cases (18)

Standalone actions with an active docket and a clear status.

Mayor and City Council of Baltimore v. KalshiMD
Filed — municipal consumer-protection action
KalshiEX LLC v. Connecticut Department of Consumer ProtectionCT
Preliminary injunction reportedly denied — unconfirmed
Nessel v. KalshiEX LLCMI
TRO in effect
KalshiEX LLC v. Ohio Casino Control Commission (fine challenge)OH
Pending — fine contested
State of New Mexico v. Kalshi, Inc.NM
Pending
United States v. State of New MexicoNM
Pending
Kentucky enforcement actions v. Kalshi & others (Franklin Circuit Court)KY
Pending
United States v. Commonwealth of KentuckyKY
Pending
Mescalero Apache Tribe v. Kalshi, Inc.NM
Pending
State of Rhode Island v. KalshiEX LLCRI
Pending
CFTC intervention in KalshiEx LLC v. Furcolo (D.R.I.)RI
Pending
United States v. State of New YorkNY
Pending
State of Wisconsin v. Kalshi, Inc.WI
Pending
United States v. State of WisconsinWI
Pending
KalshiEX LLC v. KnudsenMT
Pending — no ruling yet
KalshiEX LLC v. BirdIA
Pending — pre-emptive suit
KalshiEX LLC v. CoxUT
Pending — pre-emptive suit
KalshiEX LLC v. HendrickNV
Injunction granted, then dissolved

Related & Pre-Suit Actions (4)

Companion suits and pre-litigation actions that round out the roster.

Mayor and City Council of Baltimore v. PolymarketMD
Filed — municipal consumer-protection action
United States v. State of MinnesotaMN
Pending
United States v. State of ArizonaAZ
Pending
Connecticut cease-and-desist (pre-suit)CT
Superseded by the CFTC suit
This index is informational, not legal advice. Nearly every case above is a preliminary ruling under appeal. Always verify a platform's current, location-specific eligibility directly with the venue before relying on this page.