CoStar Group, Inc. (CSGP:NASDAQ) closed at $34.73 on October 23, 2026, down 2.05% on the day. The stock trades 56.1% below its 52-week high of $79.08 and 34.1% above its 52-week low of $25.89. Over the past year, it lost 54.4%. CoStar Group, Inc. is part of the Miscellaneous sector (Business Services).
In 252 trading sessions since October 22, 2025, CSGP closed higher on 115 days (46%). Its best day was August 13, 2026 (+8.36%) and its worst was February 3, 2026 (-15.45%). The stock moved 10% or more in a single session 1 time.
CoStar Group, Inc. provides information, analytics, and online marketplace to the commercial real estate industry in North America and internationally. The company offers CoStar Property Professional service that provides inventory of office, industrial, retail, and multifamily properties and land. It also provides CoStar COMPS Professional, that covers comparable commercial real estate sales information; CoStar Tenant, an online business-to-business prospecting and analytical tool; CoStarGo, an iPad application; CoStar Market Analytics, an analytics platform; CoStar Lease Comps, an integrated solution that captures, manages, maintains, and analyzes lease data; CoStar Advertising to market a space for lease or a property for sale; and CoStar Portfolio Strategy to meet the research needs of commercial real estate owners, investors, lenders, and government regulators. In addition, the company offers CoStar Investment Analysis Portfolio Maximizer, CoStar Investment Analysis Request, CoStar Real Estate Manager Corporate Edition, and CoStar Real Estate Manager Retail Edition that are real estate management software solutions; CoStar Private Sale Network, which provides clients with cust...
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