WHITE MOUNTAINS INSURANCE GROUP LTD (WTM)
As-reported financials and SEC filings for WHITE MOUNTAINS INSURANCE GROUP LTD. The latest annual period is FY2025. The latest reported quarter is Q2 FY2026. Financial statements come straight from the company’s EDGAR filings; valuation figures such as P/E and market cap use market data.
About WHITE MOUNTAINS INSURANCE GROUP LTD
White Mountains Insurance Group Ltd is a Bermuda-based company engaged in acquiring and operating businesses in the insurance, financial services, and related sectors. It operates primarily through subsidiaries in five areas: property and casualty insurance and reinsurance, municipal bond guarantee reinsurance, capital solutions for asset and wealth management firms, specialty insurance distribution, and other operations. Its property and casualty insurance and reinsurance business is conducted mainly through its subsidiary Ark Insurance Holdings Limited and Outrigger Re Ltd.
Snapshot
Fundamentals are from SEC filings for FY2025, the latest annual period (ended December 31, 2025). P/E and market cap are derived from stored market prices, last retrieved on a rolling basis and typically within the past week.
What changed at White Mountains Insurance Group
- Revenue grew 66.8% to $3.7B in FY2025, faster than the 3.4% the year before.
- Most recent quarter Q2 FY2026: revenue $845M, up 22.5% from Q2 FY2025.
- Net income rose 380.2% to $1.1B in FY2025.
Computed from the as-reported figures in the statements below. A change we cannot state from filed figures is left out rather than estimated.
Peer comparison
Where White Mountains Insurance Group’s fundamentals sit among the 88 insurance companies. Each figure is ranked only against peers that report it, from lowest (left) to highest (right).
White Mountains Insurance Group’s revenue growth of +66.8% ranks in the 97th percentile of the 88 insurance companies reporting it. White Mountains Insurance Group’s P/E of 4.9 ranks in the 6th percentile of the 72 peers with a meaningful P/E. White Mountains Insurance Group’s net margin of 29.6% ranks in the 93rd percentile of the 82 insurance companies reporting it.
No reported insider transactions (codes P/S) in the last 90 days. For context, about 15% of companies in the universe saw any reported insider purchase (code P) in the same window. Browse insider activity →
Percentiles describe where a figure sits among industry peers reporting it (100th = highest). They are position within a peer group, not a rating, and not investment advice. Short interest ranking uses days to cover from FINRA Consolidated Short Interest data; FINRA is the owner and source of that data, included at no additional charge.
Short interest
Total shares sold short as of each twice-monthly FINRA settlement. Rising short interest means more investors are positioned against the stock; days to cover estimates how many trading days of average volume that position represents.
| Settlement | Shares short | Change | Days to cover |
|---|---|---|---|
| 2026-08-14 | 136.3K | -0.5% | 5.67 |
| 2026-07-31 | 137.0K | -1.0% | 8.53 |
| 2026-07-15 | 138.3K | +10.9% | 7.38 |
| 2026-06-30 | 124.8K | +4.6% | 6.87 |
| 2026-06-15 | 119.2K | +31.1% | 4.52 |
| 2026-05-29 | 91.0K | +3.4% | 4.13 |
| 2026-05-15 | 88.0K | +12.7% | 3.69 |
| 2026-04-30 | 78.0K | +8.8% | 5.92 |
Source: FINRA Consolidated Short Interest. FINRA is the owner and source of the FINRA-supplied data, which is included at no additional charge for your own personal or professional use; republishing or redistributing it is not permitted. Settlement dates are shown; FINRA publishes each settlement about nine business days later, so the latest figure can be two to four weeks old. Not presented as a percentage of float. No FINRA endorsement of this product is implied. Not investment advice.
Income statement (as reported)
| FY2025 | FY2024 | FY2023 | FY2022 | FY2021 | |
|---|---|---|---|---|---|
| Revenue | $3.73B | $2.24B | $2.17B | $1.16B | $614.4M |
| Gross profit | — | — | — | — | — |
| Operating income | — | — | — | — | — |
| Net income | $1.11B | $230.4M | $509.2M | $792.8M | $-275.4M |
| Diluted EPS | $430.14 | $89.79 | $198.60 | $276.96 | $-89.46 |
Figures as reported to the SEC. Underlined values link to the filing they came from; dotted values are calculated by us from reported figures; “adj” means restated for a stock split (hover to see the figure as filed). Full details: where the numbers come from.
Balance sheet (as reported)
| FY2025 | FY2024 | FY2023 | FY2022 | FY2021 | |
|---|---|---|---|---|---|
| Cash and equivalents | $185.6M | $266.4M | $122.4M | $255.0M | $147.7M |
| Current assets | — | — | — | — | — |
| Total assets | $12.31B | $9.93B | $8.39B | $7.39B | $7.00B |
| Current liabilities | — | — | — | — | — |
| Long-term debt | $837.0M | $562.5M | $564.6M | $575.2M | $420.9M |
| Total liabilities | $6.05B | $4.79B | $3.82B | $3.45B | $3.30B |
| Total equity | $6.12B | $5.13B | $4.56B | $3.94B | $3.70B |
Figures as reported to the SEC. Underlined values link to the filing they came from; dotted values are calculated by us from reported figures; “adj” means restated for a stock split (hover to see the figure as filed). Full details: where the numbers come from.
Cash flow (as reported)
| FY2025 | FY2024 | FY2023 | FY2022 | FY2021 | |
|---|---|---|---|---|---|
| Operating cash flow | $550.5M | $586.8M | $404.1M | $365.0M | $38.6M |
| Capital expenditure | — | — | — | — | — |
| Free cash flow | — | — | — | — | — |
Figures as reported to the SEC. Underlined values link to the filing they came from; dotted values are calculated by us from reported figures; “adj” means restated for a stock split (hover to see the figure as filed). Full details: where the numbers come from.
Quarterly trend (as reported)
| Quarter | Revenue | Revenue YoY | Net income | Diluted EPS |
|---|---|---|---|---|
| Q2 FY2026 | $844.6M | 22.5% | $199.5M | $80.58 |
| Q1 FY2026 | $517.8M | -10.4% | $-27.2M | $-12.59 |
| Q4 FY2025 | $1.60B | 348.0% | $835.8M | $332.59 |
| Q3 FY2025 | $864.2M | 3.0% | $113.8M | $44.18 |
| Q2 FY2025 | $689.2M | 74.3% | $122.9M | $47.75 |
| Q1 FY2025 | $577.8M | -10.7% | $33.9M | $13.19 |
| Q4 FY2024 | $358.0M | -51.4% | $-130.4M | $-51.48 |
| Q3 FY2024 | $839.1M | 61.5% | $179.0M | $69.68 |
Latest 8 reported quarters, from company XBRL filings on SEC EDGAR.
Company facts
Selected SEC filings
Largest insurance peers
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Data sourced from SEC EDGAR. Figures are as-reported and may be unaudited or restated; verify against the source filing before relying on them. Informational only. Not investment advice.