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White Mountains Insurance Group WTM Bamboo Captive — Premiums Earned
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Where this comes from
Reported directly by White Mountains Insurance Group in its filing.
Tagged under the XBRL concept us-gaap:SupplementaryInsuranceInformationPremiumRevenue.
The source filing: White Mountains Insurance Group’s 10-K, filed February 27, 2026.
- Filed
- Feb 27, 2026, 9:21 AM EST
- Fiscal year
- FY2025
- Accession
- 0001628280-26-012603
| Years ended: / December 31, 2025 | Column A / Millions / Years ended: / December 31, 2025 | Column B / Deferred Acquisition Costs | Column C / Future Policy Benefits, Losses, Claimsand Loss Expenses | Column D / Unearned Premiums | Column E / Other Policy Claims and Benefits Payable | Column F / Premiums Earned | Column G / Net Investment Income | Column H / Benefits,Claims,Losses and Settlement Expenses | Column I / Amortizationof Deferred Acquisition Costs | Column J / Other Operating Expenses | Column K / Premiums Written |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Ark/WM Outrigger | $211.1 | $2,481.0 | $1,026.1 | — | $1,697.4 | $106.5 | $844.2 | $374.4 | $143.9 | $1,811.6 | |
| HG Global | 96.9 | — | 327.9 | — | 30.8 | 27.1 | — | 8.0 | — | 61.4 | |
| Bamboo Captive (1) | — | — | — | — | 26.7 | 1.8 | 18.0 | 9.7 | — | 16.1 | |
| Bamboo CRV | 2.5 | 13.6 | 9.6 | — | 22.2 | 1.5 | 20.0 | 8.3 | — | 1.4 | |
| December 31, 2024 | |||||||||||
| Ark/WM Outrigger | 165.2 | 2,127.5 | 853.3 | — | 1,587.8 | 90.7 | 855.8 | 294.1 | 136.1 | 1,679.1 | |
| HG Global | 86.6 | — | 297.3 | — | 31.7 | 32.2 | — | 8.2 | .2 | 56.0 | |
| Bamboo Captive | 10.2 | 17.8 | 31.5 | — | 39.4 | 1.4 | 20.6 | 14.1 | — | 50.0 |
Item 16. Form 10-K Summary.
FAQ
- What is White Mountains Insurance Group's bamboo captive — premiums earned?
- White Mountains Insurance Group (WTM) reported bamboo captive — premiums earned of $6.68M in Q4 2025.
- How has White Mountains Insurance Group's bamboo captive — premiums earned changed year-over-year?
- White Mountains Insurance Group's bamboo captive — premiums earned decreased by 32.2% year-over-year, from $9.85M to $6.68M.
- What does bamboo captive — premiums earned mean?
- The portion of written premiums that corresponds to the actual coverage provided during the reporting period. This is the primary revenue metric for the insurance segment, reflecting the realization of income as risk is transferred over time. It is a fundamental measure of the segment's scale and operational performance.
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