White Mountains Insurance Group WTM Property and Accident & Health — 3
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Similar metrics at other companies
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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:ShortdurationInsuranceContractsHistoricalClaimsDurationYearThree.
The official record: White Mountains Insurance Group’s 10-K, filed February 27, 2026, on SEC EDGAR. View the filing →
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Questions, answered.
- What is White Mountains Insurance Group's property and accident & health — 3?
- White Mountains Insurance Group (WTM) reported property and accident & health — 3 of 18.4% in Q4 2025.
- How has White Mountains Insurance Group's property and accident & health — 3 changed year-over-year?
- White Mountains Insurance Group's property and accident & health — 3 increased by 0.5% year-over-year, from 18.3% to 18.4%.
- What does property and accident & health — 3 mean?
- This metric measures the underwriting performance of the Property and Accident & Health segment by isolating the impact of prior period reserve adjustments. It serves as a key indicator of the segment's historical claims estimation accuracy and the volatility of its insurance liabilities. Investors use this to assess the reliability of the company's loss reserving practices.