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Antitrust Suit Targets CoStar Noncompetes, Cross-Post Limits

By Nate Beck ( April 15, 2026, 6:51 PM EDT) -- CoStar Group faces a lawsuit in Virginia federal court alleging that the real estate information service has for years sought to prevent cross-listings by customers and shut out would-be competitors through acquisitions and noncompete deals with large brokerages, in what plaintiffs' counsel claims is the first such antitrust class action against the company. ...

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