Total assets · 2011–2025
White Mountains Insurance total assets
$12.3B+24.0% · FY2025
White Mountains Insurance (WTM) reported $12.3B in total assets for fiscal 2025, +24.0% year on year.
| Fiscal year | Total assets | Change | Filing |
|---|---|---|---|
| FY20252025-12-31 | $12.3B | +24.0% | Open → |
| FY20242024-12-31 | $9.9B | +18.4% | Open → |
| FY20232023-12-31 | $8.4B | +13.5% | Open → |
| FY20222022-12-31 | $7.4B | +5.6% | Open → |
| FY20212021-12-31 | $7.0B | +44.9% | Open → |
| FY20202020-12-31 | $4.8B | +21.3% | Open → |
| FY20192019-12-31 | $4.0B | +18.5% | Open → |
| FY20182018-12-31 | $3.4B | −8.1% | Open → |
| FY20172017-12-31 | $3.7B | −43.9% | Open → |
| FY20162016-12-31 | $6.5B | −36.6% | Open → |
| FY20152015-12-31 | $10.3B | −1.7% | Open → |
| FY20142014-12-31 | $10.5B | −13.9% | Open → |
| FY20132013-12-31 | $12.1B | −5.8% | Open → |
| FY20122012-12-31 | $12.9B | −8.3% | Open → |
| FY20112011-12-31 | $14.1B | — | Open → |
Total assets — Total assets is everything the company owns at the balance-sheet date. Banks and insurers dominate this measure because customer deposits and policy reserves sit on their balance sheets.
Every row links to its own SEC filing · Fiscal year 2025 · Data as of September 25, 2026 · 2011–2025 compound annual growth −0.9%
Total assets at companies of similar size
Cite this page
Ready-made references for the figures on this page, as published on September 25, 2026.
Wikipedia
{{cite web |title=White Mountains Insurance total assets |url=https://companiesranked.com/en/company/white-mountains-insurance/total-assets |website=CompaniesRanked |date=2026-09-25 |language=en}}APA 7
CompaniesRanked. (September 25, 2026). White Mountains Insurance total assets. CompaniesRanked. https://companiesranked.com/en/company/white-mountains-insurance/total-assetsBibTeX
@misc{companiesranked-en-company-white-mountains-insurance-total-assets-2026,
author = {{CompaniesRanked}},
title = {{White Mountains Insurance total assets}},
year = {2026},
howpublished = {\url{https://companiesranked.com/en/company/white-mountains-insurance/total-assets}},
note = {Compiled from SEC EDGAR XBRL filings; data as of 2026-09-25},
urldate = {2026-09-25}
}The filing itself
The numbers above are read from this document: 10-Q · 0001628280-26-053932 · August 6, 2026
{{cite web |title=White Mountains Insurance total assets — 10-Q (0001628280-26-053932) |url=https://www.sec.gov/Archives/edgar/data/776867/000162828026053932/wtm-20260630.htm |website=SEC EDGAR |publisher=U.S. Securities and Exchange Commission |date=2026-08-06}}The figures are rebuilt with every data refresh, so the reference carries the publication date. Add your own access date if your style requires one.