WHITE MOUNTAINS INSURANCE GROUP, LTD financials

  1. Home
  2. Financials
  3. WTM
WTM CIK 0000776867

Source: EDGAR filings · Built 2026-06-02T04:25:52Z

Key metrics by reporting period

Up to six most-recent periods side-by-side. Rows are the curated key lines — revenue, margins, cash, debt, equity, cash-flow totals, plus the derived and valuation metrics we compute on top. For every tag a filer reported in one period, use the single-filing drilldown below.

Derived Metrics

Concept FY 2025FY 2024FY 2023FY 2022FY 2021FY 2020
Net Debt 707.60M 331.60M 464.20M 347.30M 303.20M 330.10M
Gross Margin 95.94% 98.68% 98.14% 91.48% 88.72% 98.74%
Net Margin 29.62% 10.29% 23.50% 68.47% -44.82% 74.07%
Return on Equity (ROE) 20.39% 5.14% 12.01% 21.16% -7.76% 16.98%
Return on Assets (ROA) 8.99% 2.32% 6.07% 10.73% -3.93% 13.73%
Debt-to-Equity 0.16× 0.13× 0.14× 0.16× 0.13× 0.11×
Effective Tax Rate 9.55% 10.29% -2.74% -27.71% -16.23% -2.24%
Cash Conversion Ratio 0.50× 2.55× 0.79× 0.46× -0.14× -0.09×
Accruals Ratio 0.05× -0.04× 0.01× 0.06× -0.04× 0.15×
SBC % of Revenue 0.50% 0.73% 0.71% 1.21% 2.39% —

Valuation Metrics

Concept FY 2025FY 2024FY 2023FY 2022FY 2021FY 2020
P/E Trailing (Diluted) 4.83× 21.66× 7.58× 5.11× — 4.41×
P/S 1.38× 2.23× 1.78× 3.14× 4.98× 3.47×
P/B 0.95× 1.11× 0.91× 0.97× 0.86× 0.79×

Income Statement

Concept FY 2025FY 2024FY 2023FY 2022FY 2021FY 2020
Revenues 3.73B 2.24B 2.17B 1.16B 614.40M 895.60M
Cost of Goods and Services Sold 151.80M 29.60M 40.40M 98.60M 69.30M 11.30M
Income Tax Expense (Benefit) 126.90M 32.60M -15.50M 41.40M 44.40M -14.80M
Net Income (Loss) Attributable to Parent 1.11B 230.40M 509.20M 792.80M -275.40M —
Earnings Per Share, Basic $430.14 $89.79 $198.60 $276.96 $-89.46 $226.97
Weighted Average Number of Shares Outstanding, Basic 2.53M 2.53M 2.53M 2.83M 3.04M 3.08M
Earnings Per Share, Diluted $430.14 $89.79 $198.60 $276.96 $-89.46 $226.97
Weighted Average Number of Shares Outstanding, Diluted 2.53M 2.53M 2.53M 2.83M 3.04M 3.08M

Balance Sheet

Concept FY 2025FY 2024FY 2023FY 2022FY 2021FY 2020
Assets 12.31B 9.93B 8.39B 7.39B 7.00B 4.83B
Long-term Debt 837.00M 562.50M 564.60M 575.20M 420.90M 376.40M
Liabilities 6.05B 4.79B 3.82B 3.45B 3.30B 1.01B
Stockholders' Equity Attributable to Parent 5.43B 4.48B 4.24B 3.75B 3.55B 3.91B
Common Stock, Shares, Outstanding 2.48M 2.57M 2.56M 2.57M 3.02M 3.10M

Cash Flow Statement

Concept FY 2025FY 2024FY 2023FY 2022FY 2021FY 2020
Net Cash Provided by (Used in) Operating Activities 550.50M 586.80M 404.10M 365.00M 38.60M -60.60M
Net Cash Provided by (Used in) Investing Activities -666.90M -447.00M -543.90M 115.50M -208.30M 64.60M
Payments for Repurchase of Common Stock 202.60M 7.90M 32.70M 615.80M 107.50M 85.20M
Net Cash Provided by (Used in) Financing Activities 35.60M 4.20M 7.20M -344.90M 217.60M 49.00M

Raw XBRL tagging for a single filing

Every us-gaap and custom concept the filer tagged for one fiscal period, grouped by statement. Start here when a number in the trend table above surprises you and you want to see the exact tag behind it. Derived and valuation rows are omitted here because they already appear in the trend table.

Most recent filing shown by default.

Compare filings side-by-side

Diff any two filings with deltas and added / removed tags.

Immaterial rows are USD line items under 1% of the period's revenue — the noise floor below which a single tag rarely moves the investment thesis. Revenue is read from the filer's top-line concept (Revenues / RevenueFromContractWithCustomerExcludingAssessedTax, with a fallback chain). Non-USD rows, rows without a numeric value, and every row on a filing with no identifiable revenue anchor stay visible. Flip the switch off to see every tag the filer reported for the period.

Loading filing details…

Methodology

All facts on this page come straight from SEC EDGAR XBRL company-facts filings (WTM CIK 0000776867), grouped by financial statement using FASB's base us-gaap presentation taxonomy. Filers may re-parent concepts onto different statements in their own extension taxonomy, so a handful of rows can show up under a different statement than on the actual 10-K / 10-Q; custom concepts and any we couldn't map fall into Other. Hover a cell to see the fully-qualified concept name and the filer's description.

For the full methodology — statement grouping, the Other bucket, derived metrics, and fact tooltips — see the methodology reference for the statement grouping, the "Other" bucket, derived metrics, and fact tooltips.

Related tickers

CARG

CarGurus, Inc.

KMI

KINDER MORGAN, INC.

SND

SMART SAND, INC.