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White Mountains Insurance Group WTM Bamboo Captive — Premiums Written
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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:SupplementaryInsuranceInformationPremiumsWritten.
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 written?
- White Mountains Insurance Group (WTM) reported bamboo captive — premiums written of $4.03M in Q4 2025.
- How has White Mountains Insurance Group's bamboo captive — premiums written changed year-over-year?
- White Mountains Insurance Group's bamboo captive — premiums written decreased by 67.8% year-over-year, from $12.5M to $4.03M.
- What does bamboo captive — premiums written mean?
- The total amount of premiums charged for insurance policies issued during the reporting period, regardless of whether they have been earned. This is a key indicator of sales activity and the company's ability to capture market share within its target segments. It serves as a leading indicator for future earned premiums and overall business growth.
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