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WHITE MOUNTAINS INSURANCE GROUP LTD

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Data passport

CIK
0000776867
Exchange
NYSE
Business activity
— · SIC 6331
Financial inputs
6/6
Filing date
Aug 31, 2026
SEC registry record
Operating company
Last updated: SEC company ticker catalog ↗SEC Financial Statement Data Sets ↗SEC investment company series and class registry ↗

Annual financial history

Up to three published annual periods. The chart shows financial statement amounts; missing observations are not connected. Each company chart uses its own scale; compare amounts in the table.

Up to three published annual periods. The chart shows financial statement amounts; missing observations are not connected. Each company chart uses its own scale; compare amounts in the table. Exact amounts and source periods: December 2023: 2,166,700,000.0000 USD; December 2024: 2,239,800,000.0000 USD; December 2025: 3,735,000,000.0000 USD3.7B USD0 USD0December 2023December 2024December 2025
WTM · Exact amounts and source periods · USD
Period endRevenueFiling date
December 20232,166,700,000.0000Feb 27, 2026
December 20242,239,800,000.0000Feb 27, 2026
December 20253,735,000,000.0000Feb 27, 2026

Annual periods · USD

Period endRevenueNet incomeOperating cash flowTotal assetsTotal liabilitiesFiling date
December 20253,735,000,000.00001,106,400,000.0000550,500,000.000012,306,500,000.00006,051,400,000.0000Feb 27, 2026
December 20242,239,800,000.0000230,400,000.0000586,800,000.00009,925,600,000.00004,794,600,000.0000Feb 27, 2026
December 20232,166,700,000.0000509,200,000.0000404,100,000.0000——Feb 27, 2026

Financial inputs behind the calculation

Financial inputsUSDPeriod endFiling dateForm
RevenueRevenues$3.74BDecember 2025Feb 27, 202610-K
Previous period revenueRevenues$2.24BDecember 2024Feb 27, 202610-K
Net incomeNetIncomeLoss$1.11BDecember 2025Feb 27, 202610-K
Operating cash flowNetCashProvidedByUsedInOperatingActivities$550.5MDecember 2025Feb 27, 202610-K
Total assetsAssets$12.31BDecember 2025Feb 27, 202610-K
Total liabilitiesLiabilities$6.05BDecember 2025Feb 27, 202610-K

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