CoStar Slams Zillow's Injunction Bid In Compass Antitrust Suit

By Isaac Monterose · June 12, 2026, 3:51 PM EDT

Commercial real estate information company CoStar asked an Illinois federal court to let it fight Zillow's preliminary injunction bid in the property listing giant's antitrust suit against Compass and others, arguing...

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Case Information

Case Title

Zillow Group, Inc. et al v. Midwest Real Estate Data LLC et al

Case Number

1:26-cv-05451

Court

Illinois Northern

Nature of Suit

410 Anti-Trust

Date Filed

May 12, 2026