Quick Answer
WHITE MOUNTAINS INSURANCE GROUP LTD reported Total Assets of $12.31 billion for the year ending 2025.
- WHITE MOUNTAINS INSURANCE GROUP LTD showed an increase of +24.0% in Total Assets from 2024 to 2025.
- This data is from WHITE MOUNTAINS INSURANCE GROUP LTD's annual report (Form 10-K), filed with the SEC on February 27, 2026.
- XBRL data for this metric is available from 2009 to 2025 (17 years of filings). Earlier data may not exist in machine-readable XBRL format as companies adopted electronic filing at different times.
- Quarterly values from 10-Q filings: Q2 2010: $15.50 billion | Q3 2010: $14.99 billion | Q1 2011: $14.60 billion | Q2 2011: $14.20 billion | Q3 2011: $14.58 billion | Q1 2012: $13.38 billion | Q2 2012: $13.28 billion | Q3 2012: $13.47 billion | Q1 2013: $12.61 billion | Q2 2013: $12.28 billion | Q3 2013: $12.31 billion | Q1 2014: $12.42 billion | Q2 2014: $12.36 billion | Q3 2014: $12.19 billion | Q1 2015: $10.51 billion | Q2 2015: $10.43 billion | Q3 2015: $10.35 billion | Q1 2016: $10.39 billion | Q2 2016: $7.07 billion | Q3 2016: $6.68 billion | Q1 2017: $6.49 billion | Q2 2017: $6.79 billion | Q3 2017: $3.64 billion | Q1 2018: $3.59 billion | Q2 2018: $3.37 billion | Q3 2018: $3.42 billion | Q1 2019: $3.63 billion | Q2 2019: $3.75 billion | Q3 2019: $3.84 billion | Q1 2020: $3.74 billion | Q2 2020: $4.00 billion | Q3 2020: $4.38 billion | Q1 2021: $6.90 billion | Q2 2021: $7.28 billion | Q3 2021: $7.11 billion | Q1 2022: $7.36 billion | Q2 2022: $7.66 billion | Q3 2022: $7.55 billion | Q1 2023: $7.96 billion | Q2 2023: $8.38 billion | Q3 2023: $8.14 billion | Q1 2024: $9.59 billion | Q2 2024: $10.17 billion | Q3 2024: $10.34 billion | Q1 2025: $11.00 billion | Q2 2025: $11.82 billion | Q3 2025: $12.35 billion.
- Over the full 17 years of available data (2009 to 2025), WHITE MOUNTAINS INSURANCE GROUP LTD's Total Assets has declined by 20.3%.
- Historical annual values: Fiscal year 2025: $12.31 billion | Fiscal year 2024: $9.93 billion | Fiscal year 2023: $8.39 billion | Fiscal year 2022: $7.39 billion | Fiscal year 2021: $7.00 billion | Fiscal year 2020: $4.83 billion | Fiscal year 2019: $3.98 billion | Fiscal year 2018: $3.36 billion | Fiscal year 2017: $3.66 billion | Fiscal year 2016: $6.52 billion | Fiscal year 2015: $10.28 billion | Fiscal year 2014: $10.46 billion | Fiscal year 2013: $12.14 billion | Fiscal year 2012: $12.90 billion | Fiscal year 2011: $14.06 billion | Fiscal year 2010: $14.53 billion | Fiscal year 2009: $15.44 billion.
- Data sourced from SEC EDGAR public filings as of August 4, 2026.
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