Six Major MLS Organizations File Federal Lawsuit Against Compass Over Listing Access Rules
Six major Multiple Listing Services (MLSs)—Arizona Regional MLS, bridgeMLS, Canopy MLS, Doorify MLS, Hive MLS, and REcolorado—have filed a joint federal lawsuit against Compass, Inc. (COMP) in the U.S. District Court for the Southern District of New York. The litigation seeks to defend cooperation rules that require real estate professionals to submit publicly marketed properties to the shared database within one business day. The dispute arose after Compass issued demand letters in September 2026, threatening legal action unless the MLS organizations ceased penalizing agents who advertise properties without submitting them to the central database. The plaintiffs argue that Compass's actions threaten market transparency and fair competition by potentially allowing large brokerages to withhold inventory from the broader real estate community. The lawsuit seeks a court declaration that these cooperation rules comply with the Sherman Act and state antitrust laws, alongside an injunction to prevent Compass from pursuing its own legal claims against the MLS organizations.
Tickers: $COMP
Topics: Antitrust Lawsuit Multiple Listing Services (MLS) Real Estate