CoStar Group (CSGP) - Market capitalization

Market cap: C$36.38 Billion

As of January 2026 CoStar Group has a market cap of C$36.38 Billion. This makes CoStar Group the world's 913th most valuable company by market cap according to our data. The market capitalization, commonly called market cap, is the total market value of a publicly traded company's outstanding shares and is commonly used to measure how much a company is worth.

Market cap history of CoStar Group from 1998 to 2026

End of year Market Cap

Year	Marketcap	Change
2026	C$36.38 B	-6.46%
2025	C$38.89 B	-8.46%
2024	C$42.48 B	-10.24%
2023	C$47.33 B	10.99%
2022	C$42.64 B	7.22%
2021	C$39.77 B	-14.37%
2020	C$46.45 B	62.13%
2019	C$28.65 B	71.08%
2018	C$16.74 B	24.11%
2017	C$13.49 B	63.45%
2016	C$8.25 B	-11.43%
2015	C$9.32 B	35.34%
2014	C$6.88 B	21.5%
2013	C$5.66 B	124.99%
2012	C$2.51 B	46.48%
2011	C$1.71 B	43.97%
2010	C$1.19 B	31.83%
2009	C$0.90 B	14.64%
2008	C$0.79 B	-13.9%
2007	C$0.91 B	-22.86%
2006	C$1.18 B	26.78%
2005	C$0.93 B	-7.55%
2004	C$1.01 B	4.98%
2003	C$0.96 B	109.9%
2002	C$0.46 B	-23.37%
2001	C$0.60 B	9.26%
2000	C$0.55 B	-17.99%
1999	C$0.67 B	294.08%
1998	C$0.17 B

End of Day market cap according to different sources

On Jan 13th, 2026 the market cap of CoStar Group was reported to be:

C$36.38 Billion

by Nasdaq

C$36.38 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
TechTarget TTGT	C$0.50 B	-98.60%	🇺🇸 USA
Movano MOVE	C$8.15 M	-99.98%	🇺🇸 USA
Accenture ACN	C$238.63 B	555.93%	🇮🇪 Ireland
Magellan Health MGLN	C$3.47 B	-90.45%	🇺🇸 USA

What is the market capitalization of a company?

The market capitalization sometimes referred as Marketcap, is the value of a publicly listed company.
In most cases it can be easily calculated by multiplying the share price with the amount of outstanding shares.

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Market capitalization of CoStar Group (CSGP)

Market cap: C$36.38 Billion