Headquarters: United States — Prediction markets / event-contract exchange

QCX LLC (Polymarket US)

Also known as: QCX LLC, Polymarket US

Updated on 11 November 2026

Banking, finance and insurance Technology, telecoms and digital

U.S. CFTC-designated event-contract exchange litigating state gaming regulation.

QCX LLC, trading as Polymarket US, is a CFTC-designated event-contract exchange. State regulators dispute its sports-contract offerings as gambling subject to local law. QCX is a defendant in a Baltimore case and has sued several states to protect its operations; no final determination was identified in the new November 2026 lawsuits.

Are you concerned? Right of reply

2Documented controversies

4Sources

0Formal charge · all time

0Conviction

§ Legal statuses reflect the documented sources as of the date shown; they replace neither court decisions nor the presumption of innocence. Counts are not a rating. Methodology

I. Documented controversies

August–October 2026

2026: Baltimore sues QCX over sports event contracts

Civil / administrative proceedings

Baltimore sued QCX LLC and related entities over contracts it alleges amount to unlawful gambling. The case was removed to federal court; the litigation tracker describes a procedural stay and jurisdictional arguments.

State of the evidence: Court docket confirms the suit; merits allegations unproven.
Legal status — source text: Federal civil case pending without a confirmed merits ruling.
Attribution: QCX is a named defendant in the local case.

Sources · 2

[1]
U.S. District Court / JustiaCity of Baltimore v. QCX LLC et al 1:2026cv0325317 August 2026MediaMedium reliability
[2]
Foley & Lardner LLPPrediction Markets Litigation Tracker: District Court CasesMediaMedium reliability

Last verified: 11 November 2026

Add to this entry Any news?

September 16–18, 2026

September 18, 2026: Missouri cease-and-desist demand

Civil / administrative proceedings

Missouri’s attorney general announced cease-and-desist letters to multiple firms including Polymarket, asserting that sports event contracts require state wagering licences. Missouri regards the products as unlawful unlicensed betting; the company maintains federal commodities law governs them.

State of the evidence: Missouri official notice; legal classification remains contested.
Legal status — source text: State demand followed by federal litigation.
Attribution: Allegedly offering sports contracts without a state licence.

Sources · 2

[1]
Missouri Attorney GeneralMissouri Attorney General Hanaway Orders Unlicensed Prediction Markets To Cease And Desist Unlawful Sports Wagering18 September 2026Official documentHigh reliability
[2]
U.S. District Court / JustiaQCX LLC v. Hanaway et al 4:2026cv019309 November 2026MediaMedium reliability

Last verified: 11 November 2026

Add to this entry Any news?

II. Constellation of documented links

No documented link with another published profile for now.

Two profiles are linked when a documented controversy of one names the other. The link points to that controversy and its sources; it does not indicate a personal relationship.

III. Has something changed?

A new court decision, a missing source, a mistake? Tell us what should be updated: every request is read by the editorial team.

Support the archive

Controversia checks and updates its profiles independently. Support is optional and has no effect on the content of profiles.

Donate

Controversia profile, updated 11 November 2026. Latest version: https://controversia.info/en/fiche/qcx-llc-polymarket-us