CoStar Group (CSGP) Stock Analysis & Winston Score
CoStar Group runs online marketplaces and databases for real estate. Its main products include CoStar (a data platform for commercial real estate professionals), Apartments.com (a rental listing site for renters and landlords), and LoopNet (a marketplace for buying and selling commercial properties). It serves brokers, landlords, investors, and everyday renters across the United States and several international markets. The company makes money primarily through subscriptions — brokers and property owners pay recurring fees to access data, analytics, and listing tools. CoStar Group operates mainly in the US but has been expanding into the UK and other European markets. Its large proprietary database of property information, built over decades, is difficult for competitors to replicate quickly. The biggest growth bet right now is Homes.com, a residential real estate portal the company is spending heavily to build into a serious competitor to Zillow — that spending is why operating margins remain very thin despite strong gross margins.
Winston Score: 45/100 — Average
Mixed quality — meaningful strengths and weaknesses.
- Quality: Good (15/30)
- Growth: Mixed (7/20)
- Cash Flow: Good (6/10)
- Stability: Strong (8/10)
- Valuation: Good (5/10)
- Ownership: Weak (2/15)
Key Facts
Price: $32.26
Market Cap: $13.1B
Sector: Real Estate
Industry: Real Estate - Services
Exchange: NASDAQ


