CoStar Group, Inc. (CSGP)

CoStar Group Market Cap

CoStar Group has a market cap or net worth of $33.1 billion as of October 27, 2025. Its market cap has increased by 7.92% in one year.

• Market Cap: 33.10B
• Enterprise Value: 30.27B
• 1-Year Change: 7.92%
• Ranking: #412
• Category: Large-Cap
• Stock Price: $78.12

Market Cap Chart

Since December 1, 1998, CoStar Group's market cap has increased from $74.60M to $33.10B, an increase of 44,264.03%. That is a compound annual growth rate of 25.41%.

Market Cap History

Date	Market Cap	% Change
Oct 27, 2025	33.10B	12.77%
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%
Dec 31, 2001	376.80M	3.37%

View and export this data all the way back to 1998. Sign Up Today.

Related Stocks

Company	Market Cap
Prologis	119.54B
Welltower	119.01B
American Tower	89.68B
Equinix	82.16B
Simon Property Group	67.18B
Digital Realty Trust	62.61B
Realty Income	55.01B
Public Storage	53.18B