Screener
White Mountains Insurance Group WTM Property and Accident & Health — 9
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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:ShortdurationInsuranceContractsHistoricalClaimsDurationYearNine.
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
| Property and Accident & Health | Property and Accident & Health / Average Annual Percentage Payout of Incurred Loss and LAE by Age, Net of Reinsurance | Property and Accident & Health / Average Annual Percentage Payout of Incurred Loss and LAE by Age, Net of Reinsurance | Property and Accident & Health / Average Annual Percentage Payout of Incurred Loss and LAE by Age, Net of Reinsurance | Property and Accident & Health / Average Annual Percentage Payout of Incurred Loss and LAE by Age, Net of Reinsurance | Average Annual Percentage Payout of Incurred Loss and LAE by Age, Net of Reinsurance | Average Annual Percentage Payout of Incurred Loss and LAE by Age, Net of Reinsurance | Average Annual Percentage Payout of Incurred Loss and LAE by Age, Net of Reinsurance | Average Annual Percentage Payout of Incurred Loss and LAE by Age, Net of Reinsurance | Average Annual Percentage Payout of Incurred Loss and LAE by Age, Net of Reinsurance | Average Annual Percentage Payout of Incurred Loss and LAE by Age, Net of Reinsurance |
|---|---|---|---|---|---|---|---|---|---|---|
| Years | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 27.4% | 31.9% | 18.4% | 6.4% | 2.9% | 1.9% | 0.4% | 0.9% | 0.2% | 0.1% |
Item 16. Form 10-K Summary.
FAQ
- What is White Mountains Insurance Group's property and accident & health — 9?
- White Mountains Insurance Group (WTM) reported property and accident & health — 9 of 0.2% in Q4 2025.
- How has White Mountains Insurance Group's property and accident & health — 9 changed year-over-year?
- White Mountains Insurance Group's property and accident & health — 9 increased by 100.0% year-over-year, from 0.1% to 0.2%.
- What does property and accident & health — 9 mean?
- This metric measures the net impact of prior year reserve development for the Property and Accident & Health segment. It reflects the financial adjustment required to align historical loss estimates with current claims experience. This metric is a primary indicator of the segment's actuarial accuracy and historical underwriting performance.
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