{ "schemaVersion": "vultax-public-research-data-v1", "articleUrl": "https://vultax.com/research/prediction-market-lawsuit-tracker", "datasets": [ { "title": "Exchanges against states (6)", "columns": [ { "name": "Case", "unit": null }, { "name": "State and venue", "unit": null }, { "name": "Status", "unit": null }, { "name": "Latest entry", "unit": null }, { "name": "Checked", "unit": null } ], "rows": [ [ "[QCX LLC (Polymarket US) v. James, et al.](https://storage.courtlistener.com/recap/gov.uscourts.nysd.673553/gov.uscourts.nysd.673553.1.0.pdf), S.D.N.Y. 1:26-cv-08345", "New York · Polymarket US", "Complaint: asks for New York's gambling laws to be declared pre-empted as applied to Polymarket US; no ruling", "25 Sep 2026", "Document" ], [ "[KalshiEX LLC v. Martin, et al.](https://www.govinfo.gov/content/pkg/USCOURTS-mdd-1_25-cv-01283/pdf/USCOURTS-mdd-1_25-cv-01283-0.pdf), 4th Cir. 25-1892, from D. Md. 1:25-cv-01283", "Maryland · Kalshi", "Argued 7 May 2026, undecided; the denial of Kalshi's injunction stands; Kalshi has told the court of a forthcoming CFTC regulation", "25 Sep 2026", "Document" ], [ "[QCX LLC (Polymarket US) v. Nessel, et al.](https://storage.courtlistener.com/recap/gov.uscourts.miwd.119537/gov.uscourts.miwd.119537.41.0.pdf), W.D. Mich. 1:26-cv-00710; 6th Cir. 26-1552", "Michigan · Polymarket US", "Preliminary injunction denied (17 June 2026); appeal being briefed", "16 Sep 2026", "Document" ], [ "[KalshiEX LLC v. Cafferelli, et al.](https://ecf.ctd.uscourts.gov/cgi-bin/show_public_doc?2025cv2016-99=), D. Conn. 3:25-cv-02016; 2d Cir. 26-2239", "Connecticut · Kalshi", "Preliminary injunction denied (order signed 7 August 2026, entered 10 August); injunction pending appeal denied 15 August; appeal pending; district case paused", "25 Aug 2026", "Document" ], [ "[KalshiEX LLC v. Williams, et al.](https://ag.ny.gov/sites/default/files/court-filings/kalshiex-llc-v-new-york-state-gaming-commission-et-al-opinion-and-order-2026.pdf), S.D.N.Y. 1:25-cv-08846; 2d Cir. 26-1835", "New York · Kalshi", "Preliminary injunction denied (7 July 2026); appeal pending, heard with the Connecticut appeal", "21 Aug 2026", "Document" ], [ "[KalshiEX LLC v. Furcolo, et al.](https://www.cftc.gov/media/14056/OGC_RhodeIslandMotionIntervene052826/download), D.R.I. 1:26-cv-00327", "Rhode Island · Kalshi", "The United States and CFTC moved to join Kalshi's suit; outcome not verified", "28 May 2026", "Partly: motion to intervene" ] ], "measurementContext": "Checked 27 September 2026 against the court's own document, the docket index only, or partly (the part read is named). Each case links to its document or docket. Complaints and petitions are allegations. Latest entry is the most recent dated entry seen.", "sources": [ { "label": "Supreme Court docket — Flaherty v. KalshiEX, No. 26-299", "url": "https://www.supremecourt.gov/docket/docketfiles/html/public/26-299.html", "note": "Response extended to 9 November 2026" }, { "label": "Supreme Court docket — Robinhood Derivatives v. Dreitzer, No. 26-338", "url": "https://www.supremecourt.gov/docket/docketfiles/html/public/26-338.html", "note": "Response due 14 October 2026" }, { "label": "Supreme Court docket — North American Derivatives Exchange v. Nevada, No. 26-344", "url": "https://www.supremecourt.gov/docket/docketfiles/html/public/26-344.html", "note": "Response due 15 October 2026" }, { "label": "Supreme Court — October Term 2026 calendar", "url": "https://www.supremecourt.gov/oral_arguments/2026TermCourtCalendar.pdf", "note": "The term opens on 5 October 2026" }, { "label": "U.S. Court of Appeals, Third Circuit — KalshiEX v. Flaherty, No. 25-1922 (6 Apr 2026)", "url": "https://www2.ca3.uscourts.gov/opinarch/251922p.pdf", "note": "Precedential opinion" }, { "label": "U.S. Court of Appeals, Ninth Circuit — KalshiEX v. Assad, No. 25-7516 (28 Aug 2026)", "url": "https://cdn.ca9.uscourts.gov/datastore/opinions/2026/08/28/25-7516.pdf", "note": "Published opinion" }, { "label": "U.S. Court of Appeals, Sixth Circuit — KalshiEX v. Schuler and KalshiEX v. Orgel (25 Sep 2026)", "url": "https://www.opn.ca6.uscourts.gov/opinions.pdf/26a0272p-06.pdf", "note": "Recommended for publication" }, { "label": "CFTC — release 9206-26: suits against Arizona, Connecticut and Illinois (2 Apr 2026)", "url": "https://www.cftc.gov/PressRoom/PressReleases/9206-26", "note": "The first of the federal suits against states" }, { "label": "CFTC — release 9218-26: suit against New York (24 Apr 2026)", "url": "https://www.cftc.gov/PressRoom/PressReleases/9218-26", "note": null }, { "label": "CFTC — release 9220-26: suit against Wisconsin (28 Apr 2026)", "url": "https://www.cftc.gov/PressRoom/PressReleases/9220-26", "note": null }, { "label": "CFTC — release 9233-26: suit against Minnesota (19 May 2026)", "url": "https://www.cftc.gov/PressRoom/PressReleases/9233-26", "note": null }, { "label": "CFTC — release 9238-26: joining Kalshi's suit against Rhode Island (28 May 2026)", "url": "https://www.cftc.gov/PressRoom/PressReleases/9238-26", "note": null }, { "label": "CFTC — release 9251-26: suit against New Mexico (12 Jun 2026)", "url": "https://www.cftc.gov/PressRoom/PressReleases/9251-26", "note": null }, { "label": "CFTC — release 9260-26: suit against Kentucky (23 Jun 2026)", "url": "https://www.cftc.gov/PressRoom/PressReleases/9260-26", "note": null }, { "label": "CFTC — release 9217-26: insider-trading charges over the operation to capture Nicolás Maduro (23 Apr 2026)", "url": "https://www.cftc.gov/PressRoom/PressReleases/9217-26", "note": "Allegations" }, { "label": "CFTC — release 9237-26: insider-trading charges over Google's Year in Search (27 May 2026)", "url": "https://www.cftc.gov/PressRoom/PressReleases/9237-26", "note": "Allegations" }, { "label": "CourtListener — RECAP archive of federal dockets", "url": "https://www.courtlistener.com/", "note": "Copies of federal docket entries and filings; can lag the court" }, { "label": "Vultax: Is Polymarket legal in the US?", "url": "https://vultax.com/research/is-polymarket-legal-in-the-us-2026", "note": "What the cases mean venue by venue and state by state" }, { "label": "Vultax: Polymarket insider trading, the charged cases", "url": "https://vultax.com/research/polymarket-longshot-insider-screen-base-rate", "note": "How an insider screen treats the two charged cases" } ], "measurement": { "kind": "reference", "temporalCoverage": "2025-09/2026-09", "population": "6 of 49 tracked cases: exchanges against states", "methodology": "Each row checked against the court's own opinion, order, complaint, petition or docket up to 27 September 2026." }, "id": "exchanges-against-states-table", "kind": "published-table", "description": "Every court case Vultax follows over sports and event contracts, from Supreme Court petitions to class actions and two insider-trading prosecutions: 49 in all, each checked against the court's own documents or docket on 27 September 2026, with the next deadlines first.", "articleUrl": "https://vultax.com/research/prediction-market-lawsuit-tracker", "sectionUrl": "https://vultax.com/research/prediction-market-lawsuit-tracker#exchanges-against-states", "publishedAt": "2026-10-01", "modifiedAt": "2026-10-01", "version": "6df5e1b2b03e33fa2d3fda1929ce71c550d8ba4f207693665bbe4f4fd24d291b", "isLive": false, "limitations": "Published research snapshots and calculations; these exports do not contain current quotes or live account data. Observation windows and populations are stated in the source captions and methodology. Missing metadata is unknown, not zero. Lists court cases and filings up to 27 September 2026 as the court record shows them; complaints are allegations and most rulings are on preliminary relief. Nothing here is legal advice.", "downloads": { "json": "https://vultax.com/research/prediction-market-lawsuit-tracker/data.json?dataset=exchanges-against-states-table", "csv": "https://vultax.com/research/prediction-market-lawsuit-tracker/data.csv?dataset=exchanges-against-states-table" } } ] }