CoStar Group, Inc. (CSGP), headquartered in Arlington, Virginia, provides information, analytics, and online marketplace services. Valued at $28.8 billion by market cap, the company offers a subscription-based integrated platform for commercial real estate intelligence, which includes information about commercial real estate properties, properties for sale, comparable sales, tenants, space available for lease, industry news, and market status. Shares of this leading commercial real estate information and ...