COSTAR GROUP, INC.
Ticker: CSGPIndustrialsBusiness ServicesS&P 500The business
CoStar Group, Inc. (Nasdaq: CSGP) operates as a leading provider of online real estate marketplaces, information, analytics, and 3D digital twin technology across property markets worldwide. The company's mission centers on digitizing the world's real estate by empowering all participants to discover properties, insights, and connections that improve their businesses and lives. CoStar Group maintains its investor relations website at http://www.costargroup.com/investors.
The company operates through two primary reportable segments: Commercial Real Estate and Residential Real Estate. The Commercial Real Estate segment delivers subscription-based access to comprehensive commercial real estate intelligence through its CoStar platform, which provides property inventories, leasing data, sales transactions, tenant information, market analytics, and hospitality benchmarking. This segment also operates LoopNet, a leading commercial property marketing network, alongside Matterport's 3D digital twin technology, BizBuySell marketplace for business sales, and Ten-X commercial real estate auction platform. The Residential Real Estate segment aggregates consumer demand through flagship brands including Apartments.com, Homes.com, Land.com, Domain in Australia, and OnTheMarket in the United Kingdom, connecting renters and buyers with property listings while providing marketing and leads to agents, owners, landlords, and property managers.
CoStar Group employs over 8,000 people across 20 countries, with approximately 78 percent based in the United States. The company maintains a highly diversified revenue base across numerous customer types including property owners, real estate agents, brokers, developers, appraisers, property managers, investors, financial institutions, and government agencies. The company has built its competitive position through more than 35 years of database development and acquisition, creating one of the industry's most comprehensive commercial real estate information repositories comprising hundreds of data fields tracking location, building characteristics, sales comparables, tenant information, and demographic data. Recent strategic acquisitions including Visual Lease, Matterport, and Domain have expanded the company's service offerings and geographic reach. CoStar Group leverages proprietary technology, artificial intelligence, and extensive field research capabilities to maintain its position as an industry standard provider of real estate information and marketplace services.
- Sector
- Industrials
- Industry
- Business Services
- HQ
- ARLINGTON, VA
- FY end
- 12-31
- CIK
- 1057352
- SIC
- 7389
Ownership
Who holds COSTAR GROUP, INC. — across funds, superinvestors and bonds · N-PORT 2026Q2 · 13F 2026-06-30
Top fund holders
| Fund | % of fund | Value |
|---|---|---|
| VANGUARD REAL ESTATE INDEX FUND VNQ · VANGUARD SPECIALIZED FUNDS | 0.77% | $541.99M |
| Baron Partners Fund BPTRX · BARON SELECT FUNDS | 2.46% | $444.71M |
| VANGUARD TOTAL STOCK MARKET INDEX FUND VTI · VANGUARD INDEX FUNDS | 0.02% | $367.19M |
| MidCap Fund PMBMX · Principal Funds, Inc | 1.39% | $349.19M |
| VANGUARD 500 INDEX FUND VOO · VANGUARD INDEX FUNDS | 0.02% | $299.50M |
Superinvestors in COSTAR GROUP, INC.
Share of each manager's reported 13F portfolio.
Bonds held by funds
Funds report holding 1 issues of COSTAR GROUP, INC.'s debt, $243.36M at fund-held market value — what funds hold, not the company's debt outstanding. Weighted-average coupon 2.80%, maturing 2030–2030.
| Issue | Coupon | Matures | Funds | Fund-held |
|---|---|---|---|---|
| CSGP 2.8 07/15/30 144A | 2.800% | 2030-07-15 | 69 | $243.36M |
Fund ownership counts N-PORT filers only, so it is a floor rather than a census — pensions, insurers and direct holders are not visible here, and the remainder is not “held by individuals”.
Fund ownership is a subset of institutional 13F ownership — the two describe overlapping populations and must not be added together.
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