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Compass Inc. v. Zillow Group (MLS Listing Rule Antitrust)
Filed
June 2025
Jurisdiction
New York Federal Court
Plaintiff Firm
Compass Inc. (plaintiff)
Next Milestone
Case dismissed — Zillow Preview launched March 17, 2026
Compass alleged Zillow used monopoly power to undermine a competing listing model through its 'private listing' rule requiring one-day MLS sharing; Zillow's policy blocked certain listings from its platform if they were not shared on MLS within one day of being marketed
Case resolved when Zillow launched 'Zillow Preview' on March 17, 2026, ending its ban on pre-market listings. Compass voluntarily dismissed all claims without prejudice on March 18, 2026. The outcome signals that competitive pressure and market forces — rather than litigation — can drive platform policy changes.
Compass Files Antitrust Lawsuit
June 2025Compass sues Zillow alleging the listing giant uses monopoly power to undermine a competing listing model through its private listing rule
Compass Setback: Preliminary Injunction Denied
February 7, 2026Federal judge rejects Compass's bid to require Zillow to temporarily halt its private-listing policy pending further litigation
WSJ Op-Ed Highlights Consumer Stakes
February 16, 2026Wall Street Journal op-ed highlights consumer impacts at stake in the Compass v. Zillow battle over listing standards
Zillow Launches Zillow Preview
March 17, 2026Zillow announces and launches 'Zillow Preview,' ending its ban on pre-market listings — the core policy that sparked Compass's lawsuit
Compass Voluntarily Dismisses Lawsuit
March 18, 2026Compass files notice of voluntary dismissal of all antitrust claims against Zillow without prejudice, citing Zillow's policy change as resolving the dispute
Category
Dismissed/ClosedBuyer-broker commission rules (later refiled as Batton 2)
Category
Dismissed/ClosedChallenge to NAR's Clear Cooperation Policy (CCP) regarding off-MLS and pocket listings
Category
Dismissed/ClosedREX alleged NAR's optional 'no-commingling' MLS policy unfairly restricted competition by requiring certain listings to be displayed separately from MLS listings, disadvantaging non-MLS brokerages like REX
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