The real estate companies kept rents high with RealPage's software and by sharing information, the antitrust complaint says.

An amended complaint names six landlords as defendants in ongoing litigation that North Carolina and several other states, along with the federal government, began in August.

The lawsuit arrives as U.S. renters continue to struggle. The latest figures show that half of American renters spent more than 30% of their income on rent and utilities in 2022, an all-time high.