Lawsuits · Records checked Nov. 7, 2026
Polymarket lawsuits
Every case we track that names Polymarket US, grouped by who is suing whom, with each case's status and latest filing.
- 23cases naming Polymarket US
- 23still active
- 12states involved
- 6brought by states or tribes
23 cases name Polymarket US: 8 suits Polymarket US or its exchange brought against state officials, 6 cases brought by states or tribes against it, 2 prosecutions of individual traders and 1 private or class action.
Newest: Polymarket US v. Louisiana (E.D. La.), filed Oct. 27, 2026.
Operator v. state (8)
| Case | Court | Status | Latest |
|---|---|---|---|
| Polymarket US v. Louisiana (E.D. La.)QCX LLC v. Murrill | U.S. District Court for the Eastern District of Louisiana2:26-cv-02482 | Pending | Oct. 27, 2026 |
| Polymarket US v. Ohio (S.D. Ohio)QCX LLC v. Wilson | U.S. District Court for the Southern District of Ohio2:26-cv-01502 | Pending | Oct. 16, 2026 |
| Polymarket US v. New York (S.D.N.Y.)QCX LLC v. James | U.S. District Court for the Southern District of New York1:26-cv-08345 | Pending | Sept. 30, 2026 |
| Polymarket US v. New Mexico (D.N.M.)QCX LLC v. Torrez | U.S. District Court for the District of New Mexico1:26-cv-02100 | Pending | Aug. 14, 2026 |
| Polymarket US v. Michigan (Sixth Circuit)QCX, LLC v. Nessel | U.S. Court of Appeals for the Sixth Circuit26-1552 | Pending | June 26, 2026 |
| Polymarket US v. Minnesota (D. Minn.)QCX LLC v. Ellison | U.S. District Court for the District of Minnesota0:26-cv-02841 | Injunction granted | July 27, 2026 |
| Polymarket US v. Michigan (W.D. Mich.)QCX, LLC v. Nessel | U.S. District Court for the Western District of Michigan1:26-cv-00710 | Injunction denied | June 17, 2026 |
| Polymarket US v. Massachusetts (D. Mass.)QCX LLC v. Campbell | U.S. District Court for the District of Massachusetts1:26-cv-10651 | Pending | March 5, 2026 |
State v. operator (6)
| Case | Court | Status | Latest |
|---|---|---|---|
| New York v. Polymarket US (enforcement suit)People of the State of New York v. QCX LLC d/b/a Polymarket US | U.S. District Court for the Southern District of New York (removed from N.Y. Supreme Court, New York County)1:26-cv-08338 | Pending | Sept. 30, 2026 |
| Kentucky v. Polymarket US (enforcement suit)Commonwealth of Kentucky v. QCX LLC | U.S. District Court for the Eastern District of Kentucky (removed from Franklin Circuit Court, No. 26-CI-696)3:26-cv-00047 | Pending | Oct. 14, 2026 |
| Rhode Island v. Kalshi and Polymarket US (enforcement suit)The State of Rhode Island v. KalshiEX LLC | U.S. District Court for the District of Rhode Island (removed from Providence County Superior Court, PC-2026-02753)1:26-cv-00333 | Pending | Aug. 3, 2026 |
| Wisconsin v. Polymarket (enforcement suit)State of Wisconsin v. QCX, LLC | U.S. District Court for the Western District of Wisconsin (removed from Dane County Circuit Court, No. 2026CV001285)3:26-cv-00375 | Pending | June 11, 2026 |
| Nevada v. Polymarket remand appeal (Ninth Circuit)State of Nevada v. Blockratize, Inc. | U.S. Court of Appeals for the Ninth Circuit26-1343 | Pending | March 30, 2026 |
| Nevada v. Polymarket (Carson City)State of Nevada ex rel. Nevada Gaming Control Board v. Blockratize, Inc. | Nevada district court, Carson City (First Judicial District) | Injunction granted | May 29, 2026 |
United States v. state (4)
| Case | Court | Status | Latest |
|---|---|---|---|
| United States & CFTC v. Kentucky (E.D. Ky.)United States v. Commonwealth of Kentucky | U.S. District Court for the Eastern District of Kentucky3:26-cv-00049 | Pending | Oct. 26, 2026 |
| United States & CFTC v. Minnesota (D. Minn.)United States v. State of Minnesota | U.S. District Court for the District of Minnesota0:26-cv-02661 | Injunction granted | July 27, 2026 |
| United States & CFTC v. Wisconsin (E.D. Wis.)United States v. State of Wisconsin | U.S. District Court for the Eastern District of Wisconsin2:26-cv-00749 | On appeal | July 28, 2026 |
| United States & CFTC v. New York (S.D.N.Y.)United States v. State of New York | U.S. District Court for the Southern District of New York1:26-cv-03404 | Pending | Oct. 23, 2026 |
Criminal case (2)
| Case | Court | Status | Latest |
|---|---|---|---|
| United States v. Spagnuolo (Google search-data Polymarket trades)United States v. Michele Spagnuolo | U.S. District Court for the Southern District of New York | Charged | May 27, 2026 |
| United States v. Van Dyke (Maduro-raid Polymarket trades)United States v. Gannon Ken Van Dyke | U.S. District Court for the Southern District of New York1:26-cr-00156 (26 Cr. 156) | Charged | Oct. 7, 2026 |
Federal enforcement (2)
| Case | Court | Status | Latest |
|---|---|---|---|
| CFTC v. Spagnuolo (civil insider-trading suit)Commodity Futures Trading Commission v. Michele Spagnuolo | U.S. District Court for the Southern District of New York1:26-cv-04419 | Pending | May 27, 2026 |
| CFTC v. Van Dyke (civil insider-trading suit over Maduro-raid trades)Commodity Futures Trading Commission v. Gannon Ken Van Dyke | U.S. District Court for the Southern District of New York1:26-cv-03369 | Pending | Aug. 10, 2026 |
Private civil suit (1)
| Case | Court | Status | Latest |
|---|---|---|---|
| Hughes v. DraftKings, Polymarket and others (South Carolina)Hughes v. DraftKings Inc., et al. | U.S. District Court for the District of South Carolina (removed from the Charleston County Court of Common Pleas)2:26-cv-03838; 2026CP1004063 (Charleston County) | Pending | October 2026 |
Questions
- Is Polymarket being sued?
- Yes. 6 cases brought by states or tribes against it and 1 private or class action name Polymarket US; 23 of the 23 cases we track are still active. States that have sued it include Kentucky, Nevada, New York, Rhode Island and Wisconsin.
- How many lawsuits involve Polymarket?
- 23 cases across 12 states: 8 suits Polymarket US or its exchange brought against state officials, 6 cases brought by states or tribes against it, 2 prosecutions of individual traders and 1 private or class action. Some are appeals of the same dispute, each tracked separately.
- What is the newest Polymarket lawsuit?
- Polymarket US v. Louisiana (E.D. La.), filed Oct. 27, 2026. Complaint filed Oct. 27, 2026; no ruling as of Oct. 28, 2026.