CoStar Group (CSGP) - Market capitalization

Market cap: NZ$31.56 Billion

As of February 2026 CoStar Group has a market cap of NZ$31.56 Billion. This makes CoStar Group the world's 1228th 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	NZ$31.56 B	-35.64%
2025	NZ$49.03 B	-6.59%
2024	NZ$52.49 B	-6.97%
2023	NZ$56.43 B	14%
2022	NZ$49.50 B	8.33%
2021	NZ$45.69 B	-9.5%
2020	NZ$50.49 B	55.01%
2019	NZ$32.57 B	77.72%
2018	NZ$18.32 B	21.28%
2017	NZ$15.11 B	70.4%
2016	NZ$8.86 B	-9.66%
2015	NZ$9.81 B	29.62%
2014	NZ$7.57 B	16.89%
2013	NZ$6.47 B	110.4%
2012	NZ$3.07 B	42.16%
2011	NZ$2.16 B	39.85%
2010	NZ$1.54 B	30.65%
2009	NZ$1.18 B	5.85%
2008	NZ$1.12 B	-6.75%
2007	NZ$1.20 B	-17.19%
2006	NZ$1.45 B	22.99%
2005	NZ$1.17 B	-0.43%
2004	NZ$1.18 B	3.29%
2003	NZ$1.14 B	105.75%
2002	NZ$0.55 B	-38.67%
2001	NZ$0.90 B	9.66%
2000	NZ$0.82 B	-6.9%
1999	NZ$0.89 B	323.64%
1998	NZ$0.21 B

End of Day market cap according to different sources

On Feb 14th, 2026 the market cap of CoStar Group was reported to be:

NZ$31.56 Billion

by Nasdaq

NZ$31.56 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
Accenture ACN	NZ$230.17 B	629.26%	🇮🇪 Ireland
TechTarget TTGT	NZ$0.59 B	-98.10%	🇺🇸 USA
Magellan Health MGLN	NZ$4.14 B	-86.88%	🇺🇸 USA
Movano MOVE	NZ$22.24 M	-99.93%	🇺🇸 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: NZ$31.56 Billion