CoStar Group, Inc. (CSGP)
NASDAQ: CSGP · Real-Time Price · USD
27.66
+0.28 (1.02%)
At close: Oct 5, 2026, 4:00 PM EDT
27.55
-0.11 (-0.40%)
After-hours: Oct 5, 2026, 7:30 PM EDT
CoStar Group Market Cap
CoStar Group has a market cap or net worth of $11.21 billion as of October 5, 2026. Its market cap has decreased by -68.80% in one year.
Market Cap
11.21B
Enterprise Value
11.10B
1-Year Change
-68.80%
Ranking
Category
Stock Price
$27.66
ChartMarket Cap Chart
Since December 1, 1998, CoStar Group's market cap has increased from $74.60M to $11.21B, an increase of 14,923.81%. That is a compound annual growth rate of 19.71%.
| Date | Market Cap | % Change |
|---|---|---|
| Oct 5, 2026 | 11.21B | -60.67% |
| Dec 31, 2025 | 28.50B | -2.90% |
| Dec 31, 2024 | 29.35B | -17.76% |
| Dec 29, 2023 | 35.69B | 13.55% |
| Dec 30, 2022 | 31.43B | 0.70% |
| Dec 31, 2021 | 31.21B | -14.33% |
| Dec 31, 2020 | 36.43B | 66.22% |
| Dec 31, 2019 | 21.92B | 78.41% |
| Dec 31, 2018 | 12.29B | 14.46% |
| Dec 29, 2017 | 10.73B | 74.71% |
| Dec 30, 2016 | 6.14B | -8.51% |
| Dec 31, 2015 | 6.72B | 13.04% |
| Dec 31, 2014 | 5.94B | 11.92% |
| Dec 31, 2013 | 5.31B | 110.16% |
| Dec 31, 2012 | 2.53B | 49.38% |
| Dec 30, 2011 | 1.69B | 41.59% |
| Dec 31, 2010 | 1.19B | 38.96% |
| Dec 31, 2009 | 859.30M | 32.20% |
| Dec 31, 2008 | 650.00M | -28.67% |
| Dec 31, 2007 | 911.30M | -10.14% |
| Dec 29, 2006 | 1.01B | 26.18% |
| Dec 30, 2005 | 803.70M | -4.89% |
| Dec 31, 2004 | 845.00M | 15.25% |
| Dec 31, 2003 | 733.20M | 151.61% |
| Dec 31, 2002 | 291.40M | -22.66% |
View and export this data all the way back to 1998. Sign Up Today.
Market Capitalization
Market capitalization, also called net worth, is the total value of all of a company's outstanding shares. It is calculated by multiplying the stock price by the number of shares outstanding.
Formula: Market Cap = Stock Price * Shares Outstanding
Related Stocks
| Company | Market Cap |
|---|---|
| CBRE Group | 37.71B |
| KE Holdings | 18.80B |
| Jones Lang LaSalle | 13.96B |
| Compass | 7.11B |
| FirstService | 5.68B |
| Colliers International Group | 4.59B |
| Newmark Group | 3.06B |
| IHS Holding | 2.83B |