White Mountains Insurance Group, Ltd. (WTM)

Historical Shares Outstanding

Current Count

2.6M

Financial Fundamentals

WTM • Quarterly Data • 5Y View

Share Count History

Date	Shares Out. (M)	Change (M)	Change %
2026-03-31	2.6	0.0	0.00%
2025-12-31	2.6	0.0	+0.50%
2025-09-30	2.5	0.0	0.00%
2025-06-30	2.5	0.0	+0.02%
2025-03-31	2.5	-0.0	-1.05%
2024-12-31	2.6	0.0	+1.38%
2024-09-30	2.5	0.0	+0.05%
2024-06-30	2.5	0.0	+0.03%
2024-03-31	2.5	-0.0	-1.17%
2023-12-31	2.6	0.0	+1.51%
2023-09-30	2.5	-0.0	-0.08%
2023-06-30	2.5	-0.0	-0.55%
2023-03-31	2.5	-0.0	-1.40%
2022-12-31	2.6	-0.3	-9.83%
2022-09-30	2.9	-0.1	-2.90%
2022-06-30	2.9	-0.0	-1.21%
2022-03-31	3.0	-0.0	-1.35%
2021-12-31	3.0	-0.0	-1.15%
2021-09-30	3.1	-0.1	-1.78%
2021-06-30	3.1	0.0	+1.30%
2021-03-31	3.1	-0.0	-1.11%
2020-12-31	3.1	0.0	+1.42%
2020-09-30	3.1	-0.0	-0.19%
2020-06-30	3.1	-0.1	-2.54%
2020-03-31	3.1	-0.0	-1.29%
2019-12-31	3.2	0.0	+1.37%
2019-09-30	3.1	0.0	+0.04%
2019-06-30	3.1	0.0	+0.03%
2019-03-31	3.1	-0.0	-1.26%
2018-12-31	3.2	0.0	+1.31%
2018-09-30	3.1	-0.3	-7.42%
2018-06-30	3.4	-0.3	-8.62%
2018-03-31	3.7	-0.0	-1.06%
2017-12-31	3.8	-0.5	-11.63%
2017-09-30	4.2	-0.3	-6.01%
2017-06-30	4.5	0.0	+0.06%
2017-03-31	4.5	-0.0	-1.09%
2016-12-31	4.6	-0.2	-5.19%
2016-09-30	4.8	-0.3	-5.59%
2016-06-30	5.1	-0.4	-7.11%
2016-03-31	5.5	-0.2	-3.23%
2015-12-31	5.7	-0.2	-3.74%
2015-09-30	5.9	-0.1	-1.38%
2015-06-30	6.0	0.1	+0.89%
2015-03-31	5.9	-0.1	-1.23%
2014-12-31	6.0	-0.1	-1.61%
2014-09-30	6.1	0.1	+1.54%
2014-06-30	6.0	-0.1	-1.65%
2014-03-31	6.1	-0.1	-1.24%
2013-12-31	6.2	0.1	+1.56%
2013-09-30	6.1	0.0	+0.00%
2013-06-30	6.1	-0.1	-1.84%
2013-03-31	6.2	-0.3	-5.27%
2012-12-31	6.5	0.0	+0.69%
2012-09-30	6.5	-0.2	-2.47%
2012-06-30	6.7	-0.7	-9.45%
2012-03-31	7.4	-0.1	-1.05%
2011-12-31	7.4	-0.4	-5.28%
2011-09-30	7.8	-0.0	-0.50%
2011-06-30	7.9	-0.1	-1.82%
2011-03-31	8.0	-0.0	-0.00%
2010-12-31	8.0	-0.4	-4.73%
2010-09-30	8.4	-0.2	-2.77%
2010-06-30	8.7	-0.2	-1.85%
2010-03-31	8.8	0.0	0.00%
2009-12-31	8.8	-0.0	-0.28%
2009-09-30	8.9	-0.0	-0.01%
2009-06-30	8.9	0.0	+0.38%
2009-03-31	8.8	0.0	0.00%
2008-12-31	8.8	-1.6	-15.31%
2008-09-30	10.4	-0.1	-1.40%
2008-06-30	10.6	-0.0	-0.40%
2008-03-31	10.6	0.1	+0.89%
2007-12-31	10.5	-0.3	-2.63%
2007-09-30	10.8	0.0	+0.01%
2007-06-30	10.8	0.0	+0.05%
2007-03-31	10.8	0.0	0.00%
2006-12-31	10.8	-0.0	-0.03%
2006-09-30	10.8	-0.0	-0.03%
2006-06-30	10.8	0.0	+0.03%
2006-03-31	10.8	0.0	0.00%
2005-12-31	10.8	0.0	+0.33%
2005-09-30	10.8	0.0	+0.00%
2005-06-30	10.8	-0.1	-0.86%
2005-03-31	10.9	0.0	0.00%
2004-12-31	10.9	0.1	+1.04%
2004-09-30	10.7	0.5	+4.90%
2004-06-30	10.2	0.0	+0.39%
2004-03-31	10.2	0.0	0.00%
2003-12-31	10.2	0.0	+0.31%
2003-09-30	10.2	0.4	+4.56%
2003-06-30	9.7	0.6	+6.51%
2003-03-31	9.1	0.0	0.00%
2002-12-31	9.1	0.2	+1.77%
2002-09-30	9.0	0.7	+9.07%
2002-06-30	8.2	-0.1	-0.92%
2002-03-31	8.3	0.0	0.00%
2001-12-31	8.3	1.5	+22.36%
2001-09-30	6.8	0.9	+15.50%
2001-06-30	5.9	-0.1	-1.04%
2001-03-31	5.9	0.0	0.00%
2000-12-31	5.9	0.0	+0.46%
2000-09-30	5.9	-0.8	-11.35%
2000-06-30	6.7	0.7	+11.90%
2000-03-31	6.0	0.0	0.00%
1999-12-31	6.0	0.2	+2.67%
1999-09-30	5.8	-0.4	-6.12%
1999-06-30	6.2	-0.4	-5.95%
1999-03-31	6.6	0.0	0.00%
1998-12-31	6.6	0.0	+0.75%
1998-09-30	6.5	0.7	+11.53%
1998-06-30	5.8	-0.0	-0.17%
1998-03-31	5.9	0.0	0.00%
1997-12-31	5.9	-1.6	-21.65%
1997-09-30	7.5	0.1	+1.08%
1997-06-30	7.4	-0.1	-1.87%
1997-03-31	7.5	0.0	0.00%
1996-12-31	7.5	-0.5	-6.28%
1996-09-30	8.0	-0.3	-3.48%
1996-06-30	8.3	—	—