White Mountains Insurance Group (WTM)

Market cap: HK$40.44 Billion

As of December 2025 White Mountains Insurance Group has a market cap of HK$40.44 Billion. This makes White Mountains Insurance Group the world's 3001th 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 White Mountains Insurance Group from 1996 to 2025

End of year Market Cap

Year	Marketcap	Change
2025	HK$40.44 B	5.71%
2024	HK$38.25 B	27.11%
2023	HK$30.09 B	5.72%
2022	HK$28.46 B	19.32%
2021	HK$23.85 B	-0.85%
2020	HK$24.06 B	-13.05%
2019	HK$27.67 B	29.85%
2018	HK$21.31 B	-14.55%
2017	HK$24.94 B	-15.73%
2016	HK$29.59 B	-6.57%
2015	HK$31.68 B	8.28%
2014	HK$29.25 B	1.29%
2013	HK$28.88 B	15.02%
2012	HK$25.11 B	-6.56%
2011	HK$26.87 B	25.57%
2010	HK$21.40 B	-6.35%
2009	HK$22.85 B	6.03%
2008	HK$21.55 B	-49.05%
2007	HK$42.29 B	-12.95%
2006	HK$48.59 B	4.1%
2005	HK$46.68 B	-13.68%
2004	HK$54.08 B	68.41%
2003	HK$32.11 B	52.65%
2002	HK$21.03 B	-6.42%
2001	HK$22.47 B	53.66%
2000	HK$14.62 B	162.83%
1999	HK$5.56 B	-12%
1998	HK$6.32 B	12.79%
1997	HK$5.60 B	9.67%
1996	HK$5.11 B

End of Day market cap according to different sources

On Dec 5th, 2025 the market cap of White Mountains Insurance Group was reported to be:

HK$40.46 Billion

by Nasdaq

HK$40.44 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
Chubb CB	HK$915.55 B	2,163.96%	🇨🇭 Switzerland
The Travelers Companies TRV	HK$492.26 B	1,117.27%	🇺🇸 USA
W. R. Berkley WRB	HK$197.37 B	388.06%	🇺🇸 USA
Loews Corporation L	HK$166.02 B	310.54%	🇺🇸 USA
RLI Corp. RLI	HK$44.65 B	10.43%	🇺🇸 USA
Alleghany Y	HK$88.80 B	119.58%	🇺🇸 USA
American International Group AIG	HK$332.19 B	721.46%	🇺🇸 USA
Markel Group MKL	HK$201.69 B	398.74%	🇺🇸 USA
Warrior Met Coal HCC	HK$33.39 B	-17.42%	🇺🇸 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 White Mountains Insurance Group (WTM)

Market cap: HK$40.44 Billion