White Mountains Insurance Group, Ltd. (WTM)

WTM Market Cap

WTM has a market cap or net worth of $5.12 billion as of December 18, 2025. Its market cap has decreased by -0.66% in one year.

• Market Cap: 5.12B
• Enterprise Value: 5.56B
• 1-Year Change: -0.66%
• Ranking: #1334
• Category: Mid-Cap
• Stock Price: $2,040.00

Market Cap Chart

Since December 1, 1998, WTM's market cap has increased from $836.70M to $5.12B, an increase of 512.18%. That is a compound annual growth rate of 6.92%.

Market Cap History

Date	Market Cap	% Change
Dec 17, 2025	5.23B	4.61%
Dec 31, 2024	5.00B	29.63%
Dec 29, 2023	3.85B	5.76%
Dec 30, 2022	3.64B	19.08%
Dec 31, 2021	3.06B	-1.43%
Dec 31, 2020	3.10B	-12.64%
Dec 31, 2019	3.55B	30.26%
Dec 31, 2018	2.73B	-14.55%
Dec 29, 2017	3.19B	-16.36%
Dec 30, 2016	3.82B	-7.65%
Dec 31, 2015	4.13B	9.23%
Dec 31, 2014	3.78B	1.57%
Dec 31, 2013	3.73B	9.85%
Dec 31, 2012	3.39B	-2.00%
Dec 30, 2011	3.46B	24.24%
Dec 31, 2010	2.79B	-5.48%
Dec 31, 2009	2.95B	5.64%
Dec 31, 2008	2.79B	-48.62%
Dec 31, 2007	5.43B	-13.09%
Dec 29, 2006	6.25B	3.79%
Dec 30, 2005	6.02B	-13.49%
Dec 31, 2004	6.96B	68.02%
Dec 31, 2003	4.14B	53.15%
Dec 31, 2002	2.70B	-4.86%
Dec 31, 2001	2.84B	51.50%

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