What does property and accident & health — 2 mean?

This metric represents the net favorable or unfavorable development of prior accident year loss reserves for the Property and Accident & Health segment. It reflects the adjustment in estimated liabilities for claims incurred in previous periods as more information becomes available. Changes in this figure indicate the accuracy of initial underwriting assumptions and reserve adequacy over time.

White Mountains Insurance Group (WTM) Property and Accident & Health — 2

Screener

Other product segments

Marine & Energy

27.1%-11.1%

Specialty

26.8%-13.0%

Casualty-Runoff

13.9%-1.4%

Casualty-Active

7.5%-10.7%

Similar metrics at other companies

FRHCAccident Insurance — 2

41.3%-11.2pp

FRHCProperty Damage — 2

22%+12.3pp

HIPOProperty Lines — 2

27%—

HGBermuda - Property — 2

40%-2.0pp

HGInternational - Property — 2

47%+3.0pp

FRHCCivil Liability — 2

36%+6.4pp

Other financials

Income statement

See full

Revenue$844.6M+22.5%

Gross profit$764.5M+18.2%

Net income$199.5M+62.3%

Balance sheet

See full

Total debt$932.5M+34.2%

Total equity$5.4B+16.0%

Total assets$13.8B+16.4%

Cash flow

See full

Operating cash flow-$55.5M-131%

Valuation

See full

Market cap$5.3B+15.6%

P/E4.7×—

P/S1.4×-0.5×

Profitability

See full

Gross margin94.1%-3.2pp

Net margin29.3%—

Returns & leverage

See full

Return on equity22.4%—

Debt / equity0.2×0.0×

Where this comes from

Reported directly by White Mountains Insurance Group in its filing.

Tagged under the XBRL concept us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationYearTwo.

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 — 2?: White Mountains Insurance Group (WTM) reported property and accident & health — 2 of 31.9% in Q4 2025.
How has White Mountains Insurance Group's property and accident & health — 2 changed year-over-year?: White Mountains Insurance Group's property and accident & health — 2 decreased by 2.7% year-over-year, from 32.8% to 31.9%.
What does property and accident & health — 2 mean?: This metric represents the net favorable or unfavorable development of prior accident year loss reserves for the Property and Accident & Health segment. It reflects the adjustment in estimated liabilities for claims incurred in previous periods as more information becomes available. Changes in this figure indicate the accuracy of initial underwriting assumptions and reserve adequacy over time.