White Mountains Insurance Group LTD balance sheet

At the end of fiscal 2025, White Mountains Insurance Group LTD had total assets of $12.31bn, total liabilities of $6.05bn and shareholders' equity of $5.43bn. It held $186m in cash against $852m of debt: net debt of $667m.

Balance sheet

US$ billions unless shown otherwise. Fiscal years, plus the last twelve months (LTM) when newer.

White Mountains Insurance Group LTD: balance sheet, annual
Fiscal year	2009Dec 2009	2010Dec 2010	2011Dec 2011	2012Dec 2012	2013Dec 2013	2014Dec 2014	2015Dec 2015	2016Dec 2016	2017Dec 2017	2018Dec 2018	2019Dec 2019	2020Dec 2020	2021Dec 2021	2022Dec 2022	2023Dec 2023	2024Dec 2024	2025Dec 2025	LTMJun 2026
Cash and equivalents	0.1	0.1	0.3	0.1	0.2	0.1	0.1	0.1	0.1	0.1	0.2	0.1	0.1	0.3	0.1	0.3	0.2	0.1
Goodwill	—	—	—	0.0	0.0	0.0	0.0	0.0	0.0	0.4	0.4	0.5	0.1	0.2	0.2	0.4	0.6	0.8
Total assets	15.4	14.5	14.1	12.9	12.1	10.5	10.3	6.5	3.7	3.4	4.0	4.8	7.0	7.4	8.4	9.9	12.3	13.8
Long-term debt	—	0.8	0.7	0.8	0.7	0.3	0.3	0.0	0.0	0.2	0.3	0.4	0.4	0.6	0.6	0.6	0.8	0.9
Total debt	1.1	0.8	0.7	0.8	0.7	0.3	0.3	0.0	0.0	0.2	0.3	0.4	0.4	0.6	0.6	0.6	0.9	0.9
Total liabilities	11.1	10.3	9.4	8.6	7.7	5.9	5.9	2.8	0.3	0.6	0.8	1.0	3.3	3.5	3.8	4.8	6.1	7.5
Shareholders' equity	3.7	3.7	4.1	3.7	3.9	4.0	3.9	3.6	3.5	2.8	3.3	3.9	3.5	3.7	4.2	4.5	5.4	5.4
Non-controlling interests and other (assets − liabilities − equity)	0.7	0.6	0.6	0.5	0.5	0.5	0.5	0.1	−0.1	−0.1	−0.1	—	0.2	0.2	0.3	0.6	0.8	0.9
Net debt (negative = net cash)	0.9	0.7	0.4	0.6	0.4	0.2	0.3	−0.1	−0.1	0.1	0.1	0.3	0.3	0.3	0.5	0.3	0.7	0.8
Shares outstanding	9m	8m	8m	6m	6m	6m	6m	5m	4m	3m	3m	3m	3m	3m	3m	3m	2m	2m

US$ billions unless shown otherwise. Fiscal quarters.

White Mountains Insurance Group LTD: balance sheet, quarterly
Quarter	2024 Q3Sept 2024	2024 Q4Dec 2024	2025 Q1Mar 2025	2025 Q2Jun 2025	2025 Q3Sept 2025	2025 Q4Dec 2025	2026 Q1Mar 2026	2026 Q2Jun 2026
Goodwill	0.4	0.4	0.4	0.5	1.1	0.6	0.6	0.8
Total assets	10.3	9.9	11.0	11.8	12.3	12.3	13.2	13.8
Long-term debt	0.5	0.6	0.7	0.7	0.9	0.8	0.8	0.9
Total debt	0.5	0.6	0.7	0.7	0.9	0.8	0.8	0.9
Total liabilities	5.1	4.8	5.9	6.5	6.6	6.1	7.0	7.5
Shareholders' equity	4.6	4.5	4.5	4.6	4.8	5.4	5.4	5.4
Non-controlling interests and other (assets − liabilities − equity)	0.6	0.6	0.6	0.7	0.9	0.8	0.8	0.9
Shares outstanding	3m	3m	3m	3m	3m	2m	2m	2m

Balances at each fiscal year end (quarter end in the quarterly view). Total debt is short- plus long-term borrowings, including lease debt where the company reports it within debt. Where assets do not equal liabilities plus shareholders' equity, the difference (non-controlling interests, redeemable preferred shares) is shown on its own line.

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Figures from White Mountains Insurance Group LTD's SEC filings (10-K and 10-Q), retrieved October 20, 2026. How we read and check them: methodology and data sources. Not investment advice. Back to White Mountains Insurance Group LTD.