WTM common stock history

Quarterly · USD. Dates are reporting period ends; fiscal years can differ from calendar years.

White Mountains Insurance Group, Ltd. Common Stock Common Stock — Quarterly (USD)
Period ending	Common Stock (USD)
Jun 30, 2026	566,000,000
Mar 31, 2026	581,300,000
Dec 31, 2025	2,500,000
Sep 30, 2025	2,600,000
Jun 30, 2025	2,600,000
Mar 31, 2025	2,600,000
Dec 31, 2024	2,600,000
Sep 30, 2024	2,600,000
Jun 30, 2024	2,600,000
Mar 31, 2024	2,600,000
Dec 31, 2023	2,600,000
Sep 30, 2023	2,600,000
Jun 30, 2023	2,600,000
Mar 31, 2023	2,600,000
Dec 31, 2022	2,600,000
Sep 30, 2022	2,600,000
Jun 30, 2022	2,900,000
Mar 31, 2022	3,000,000
Dec 31, 2021	3,000,000
Sep 30, 2021	3,000,000
Jun 30, 2021	3,100,000
Mar 31, 2021	3,100,000
Dec 31, 2020	3,100,000
Sep 30, 2020	592,100,000
Jun 30, 2020	587,000,000
Mar 31, 2020	589,300,000
Dec 31, 2019	3,200,000
Sep 30, 2019	3,200,000
Jun 30, 2019	3,200,000
Mar 31, 2019	3,200,000
Dec 31, 2018	3,200,000
Sep 30, 2018	3,200,000
Jun 30, 2018	3,200,000
Mar 31, 2018	3,800,000
Dec 31, 2017	3,800,000
Sep 30, 2017	3,700,000
Jun 30, 2017	4,600,000
Mar 31, 2017	4,600,000
Dec 31, 2016	4,600,000
Sep 30, 2016	4,600,000
Jun 30, 2016	5,000,000
Mar 31, 2016	5,400,000
Dec 31, 2015	5,600,000
Sep 30, 2015	5,700,000
Jun 30, 2015	2,000,000
Mar 31, 2015	6,000,000
Dec 31, 2014	6,000,000
Sep 30, 2014	6,000,000
Jun 30, 2014	6,200,000
Mar 31, 2014	6,200,000
Dec 31, 2013	6,200,000
Sep 30, 2013	6,200,000
Jun 30, 2013	6,200,000
Mar 31, 2013	6,200,000
Dec 31, 2012	6,300,000
Sep 30, 2012	6,600,000
Jun 30, 2012	6,600,000
Mar 31, 2012	0
Dec 31, 2011	7,600,000
Sep 30, 2011	7,600,000
Jun 30, 2011	8,000,000
Mar 31, 2011	8,000,000
Dec 31, 2010	0
Sep 30, 2010	8,300,000
Jun 30, 2010	8,500,000
Mar 31, 2010	8,800,000
Dec 31, 2009	0
Sep 30, 2009	8,900,000
Jun 30, 2009	8,900,000
Mar 31, 2009	8,900,000
Dec 31, 2008	0
Sep 30, 2008	0
Jun 30, 2008	10,600,000
Mar 31, 2008	10,600,000
Dec 31, 2007	0
Sep 30, 2007	10,800,000
Jun 30, 2007	10,800,000
Mar 31, 2007	10,800,000
Dec 31, 2006	0
Sep 30, 2006	10,800,000
Jun 30, 2006	10,800,000
Mar 31, 2006	10,800,000
Dec 31, 2005	10,800,000
Sep 30, 2005	10,800,000
Jun 30, 2005	10,800,000
Mar 31, 2005	10,800,000
Dec 31, 2004	0
Sep 30, 2004	10,800,000
Jun 30, 2004	10,800,000
Mar 31, 2004	9,000,000
Dec 31, 2003	9,000,000
Sep 30, 2003	9,000,000
Jun 30, 2003	9,000,000
Mar 31, 2003	8,400,000
Dec 31, 2002	8,400,000
Sep 30, 2002	8,300,000
Jun 30, 2002	8,300,000
Mar 31, 2002	8,300,000
Dec 31, 2001	8,300,000
Sep 30, 2001	8,200,000