COSTAR GROUP, INC. (CSGP) Stock
CSGP has an Alpha Score of 21 out of 100 (poor), computed on Oct 31, 2026 from 3 of 4 sub-scores. 10 members of Congress disclosed 31 trades in CSGP since 2014: 21 purchases and 10 sales, most recently Gilbert Cisneros (purchase, Aug 19, 2026). 5 of the hedge funds AlphaScala tracks reported CSGP in 13F filings for the quarter ended Jun 30, 2026; the largest reported position is Marshall Wace's at $39.12M. Its trailing P/E ratio is 182.2 and its net margin 2.1% (key statistics as of Oct 22, 2026).
What is CSGP's Alpha Score?
How it works →Alpha Score of 21 reflects poor overall profile with poor momentum, poor value, weak quality. Based on 3 of 4 signals – score is capped at 90 until remaining data ingests.
Computed from 3 of 4 sub-scores; a sub-score is left out when its inputs are missing, and the composite is capped accordingly.
Computed Oct 31, 2026
A rules-based research rating, not a recommendation to buy or sell.
Which members of Congress traded COSTAR GROUP, INC. (CSGP)?
Most recent: Gilbert Cisneros (purchase, Aug 19, 2026); records start Apr 24, 2014.
| Politician | Trade date | Type | Amount |
|---|---|---|---|
| Gil Cisneros D-CA · House | 2026-08-19 | purchase | $1k – $15k |
| Gil Cisneros D-CA · House | 2026-04-14 | partial sale | $1k – $15k |
| Gil Cisneros D-CA · House | 2026-03-13 | purchase | $1k – $15k |
| Gil Cisneros D-CA · House | 2026-01-28 | purchase | $1k – $15k |
| Gil Cisneros D-CA · House | 2025-12-10 | purchase | $1k – $15k |
| Gil Cisneros D-CA · House | 2025-10-15 | purchase | $1k – $15k |
| Gil Cisneros D-CA · House | 2025-09-30 | purchase | $1k – $15k |
| Lisa McClain R-MI · House | 2025-09-25 | sale | $1k – $15k |
From STOCK Act periodic transaction reports. House filings as of Nov 5, 2026.
Every member of Congress who traded CSGP, with filing lags →Which hedge funds own CSGP?
From 13F filings| Fund | Shares Held | Position Value | Change vs prior Q |
|---|---|---|---|
| Marshall Wace | 1.38M | $39.12M | +167% |
| D.E. Shaw David Shaw | 1.04M | $29.55M | -82% |
| Millennium Management Israel Englander | 747K | $21.15M | +504% |
| Citadel Ken Griffin | 742K | $21.01M | -32% |
| Point72 Steve Cohen | 131K | $3.70M | NEW |
13F holdings as of Jun 30, 2026
Explore all tracked funds →Are COSTAR GROUP, INC. insiders buying or selling?
SEC Form 4 filings| Date | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| Aug 7, 26 | Cann Cynthia Cammett | Chief Accounting Officer | SELL | 4.8K | $147K |
| Aug 5, 26 | Hill John W | Director | SELL | 3.5K | $106K |
| Aug 4, 26 | Florance Andrew C | Founder and CEO | BUY | 83.3K | $2.5M |
SEC Form 4 filings as of Nov 5, 2026
See cluster-buy signals across all tickers →What are CSGP's key statistics?
Key statistics as of Oct 22, 2026
How does CSGP's valuation compare with the Real Estate sector?
| Metric | CSGP | Real Estate median | Companies in median |
|---|---|---|---|
| P/E ratio | 182.2 | 28.4 | 59 |
| Net margin | 2.07% | 16.07% | 66 |
| Return on equity | 0.90% | 7.15% | 67 |
Medians over the Real Estate stocks whose key statistics were refreshed in the last 35 days (newest Nov 6, 2026). P/E excludes loss-making companies.
CSGP price chart
Powered by TradingViewWhat does COSTAR GROUP, INC. do?
CoStar Group, Inc. is a leading provider of commercial real estate information, analytics, online marketplaces, and 3D digital twin technology. It offers comprehensive data on over five million properties across subsectors including office, retail, hotels, multifamily, healthcare, industrial, self-storage, and data centers. The company operates prominent brands such as CoStar Suite for analytics and news, LoopNet as the top global commercial real estate marketplace, Apartments.com for multifamily rentals, Homes.com for residential connections, Matterport for digital twins, BizBuySell for businesses for sale, Land.com for rural properties, Ten-X for online exchanges, STR for hospitality benchmarking, and international platforms like Domain in Australia, THOMAS DAILY in Germany, Bureaux Locaux in France, and OnTheMarket in the UK. With more than 80% of revenue from subscriptions, CoStar Group, Inc. serves brokers, investors, tenants, and businesses worldwide through offices in 14 countries. Founded in 1986 and headquartered in Arlington, Virginia, it plays a pivotal role in digitizing the real estate industry.