Cushman & Wakefield was among six large landlords sued by the U.S. Department of Justice over alleged anticompetitive practices in housing rental markets, the DOJ said on Tuesday.

Six of the country’s most powerful landlords were named in a lawsuit brought forth by the U.S. Justice Department. Blackstone, Cushman & Wakefield, Greystar, Camden, Pinnacle, Willow Bridge, and Cortland were all implicated.

The DOH had sued property management software company RealPage of letting landlords collude by sharing their pricing information with the company's software, which then recommends rent prices.

Cushman & Wakefield (NYSE:CWK) stock dropped 3.2%, Camden Property Trust (NYSE:CPT) stock dipped 2.1%, and Blackstone (NYSE:BX) stock slipped 1.4% after the U.S. Department of Justice added the companies,

The Justice Department is adding six major apartment landlords to its lawsuit against real-estate software company RealPage, expanding the scope of its allegations that the rent-setting algorithm enabled illegal price fixing.

The Justice Department, with its state co-plaintiffs, filed an amended complaint Tuesday in its antitrust lawsuit against RealPage, to sue Greystar Real Estate Partners LLC (Greystar); Blackstone's LivCor LLC (LivCor);

The U.S. Department of Justice said it’s expanding its antitrust lawsuit against property management software company RealPage, this time adding six landlord companies with national real estate holdings.

The Justice Department said on Tuesday that it filed an amended complaint in a lawsuit against six of the country’s largest landlords for participating in algorithmic pricing schemes that have harmed