Zillow Group and Redfin were sued on Wednesday by five states for allegedly conspiring to thwart competition in online rental listings, including when Zillow paid Redfin $100 million to stop running apartment ads.

Attorneys general of Virginia, Arizona, Connecticut, New York and Washington filed their antitrust lawsuit in the Alexandria, Virginia federal court. The Federal Trade Commission filed a similar lawsuit there on Tuesday.

Both cases stemmed from a February agreement between Zillow and Redfin, which together with Apartments.com owner CoStar account for most revenue from US online rental ads.

Both cases stemmed from a February agreement between Zillow and Redfin, which together with Apartments.com owner CoStar account for most revenue from US online rental ads. Koshiro K – st

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