CoStar Group Inc. will acquire rental property marketing firm RentPath LLC for $588 million, the companies said Wednesday. The Washington, D.C. real estate information company will purchase RentPath in cash. RentPath, based in Atlanta, owns Rent.com, ApartmentGuide.com and other marketing sites that generated more than 21 million monthly visits and nearly 9 million unique visitors in 2019, according to a press release. CoStar plans to invest in building RentPath's brands and use its existing...