White Mountains Insurance Group, Ltd. Common Stock · Tangible Book Value Per Share

Current (TTM)2.11KretrievedOct 20, 2026

WTM Tangible Book Value per Share (20.31 → 2.11K)

Period values, visible window

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WTM tangible book value per share history

Annual fiscal periods. Dates are reporting period ends; fiscal years can differ from calendar years.

White Mountains Insurance Group, Ltd. Common Stock Tangible Book Value Per Share — Annual fiscal periods
Period ending	Tangible Book Value Per Share
Dec 31, 2025	1,928.9655
Dec 31, 2024	1,741.9826
Dec 31, 2023	1,658.2915
Dec 31, 2022	1,253.4852
Dec 31, 2021	1,105.7354
Dec 31, 2020	985.1042
Dec 31, 2019	792.7159
Dec 31, 2018	652.4354
Dec 31, 2017	778.087
Dec 31, 2016	731.8463
Dec 31, 2015	742.1187
Dec 31, 2014	694.8556
Dec 31, 2013	687.8376
Dec 31, 2012	597.4853
Dec 31, 2011	615.9923
Dec 31, 2010	498.489
Dec 31, 2009	488.4055
Dec 31, 2008	341.3434
Dec 31, 2007	520.0149
Dec 31, 2006	469.7279
Dec 31, 2005	356.2122
Dec 31, 2004	392.2339
Dec 31, 2003	280.7257
Dec 31, 2002	342.9892
Dec 31, 2001	-52.421
Dec 31, 2000	173.0084
Dec 31, 1999	111.647
Dec 31, 1998	90.7624
Dec 31, 1997	79.4138
Dec 31, 1996	43.102
Dec 31, 1995	83.8204
Dec 31, 1994	77.7396
Dec 31, 1993	94.3875
Dec 31, 1992	65.5165
Dec 31, 1991	55.0573
Dec 31, 1990	45.8258
Dec 31, 1989	35.3327
Dec 31, 1988	29.4524
Dec 31, 1987	23.7071
Dec 31, 1986	23.5604
Dec 31, 1985	20.3093