Mayor and City Council of Baltimore v. Kalshi

Filed — municipal consumer-protection actionState v. Platform

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

Overview

Baltimore filed the first municipal enforcement action of the prediction-market fight (August 2026), suing under the city’s Consumer Protection Ordinance rather than state gambling law — alleging unlicensed sports betting and misleading consumers about legal and regulatory status. Unlike New York’s action it names the brokerage distributors (Coinbase, Robinhood, Webull) alongside the exchange. The theory matters beyond Baltimore: a municipal consumer-protection ordinance is cheap to replicate, and this is a front that operates independently of the state-versus-federal preemption fight running through the Fourth Circuit. Maryland’s own posture remains contested pending that appeal. (Parties, court, claim, and filing month confirmed against the City of Baltimore’s press release; the docket and verbatim caption were not obtained, so the caption above is best-supported rather than docket-confirmed.)

Timeline

August 2026

Baltimore files consumer-protection actions against Kalshi (with Coinbase, Robinhood and Webull) and, separately, Polymarket.

What's next: Pending in the Circuit Court for Baltimore City; no ruling identified.

Parties

Plaintiffs

  • Mayor Brandon M. Scott and the City Council of Baltimore

Defendants

  • Kalshi
  • Coinbase
  • Robinhood
  • Webull
This page is informational, not legal advice. Nearly every entry in this tracker is a preliminary ruling under appeal. Always verify a platform's current, location-specific eligibility directly with the venue before relying on this page.