What is White Mountains Insurance Group's marine & energy — 9?

White Mountains Insurance Group (WTM) reported marine & energy — 9 of 0.1% in Q4 2025.

How has White Mountains Insurance Group's marine & energy — 9 changed year-over-year?

White Mountains Insurance Group's marine & energy — 9 decreased by 66.7% year-over-year, from 0.3% to 0.1%.

What does marine & energy — 9 mean?

Tracks the frequency or severity of claims development for the Marine and Energy segment over a defined historical period. This metric assists investors in understanding the volatility and long-term accuracy of the segment's actuarial reserving practices.

White Mountains Insurance Group (WTM) Marine & Energy — 9

Screener

Other product segments

Casualty-Active

4.2%+13.5%

Casualty-Runoff

3.2%+3.2%

Specialty

1.2%-7.7%

Property and Accident & Health

0.2%+100%

Similar metrics at other companies

FRHCCivil Liability — 9

0%—

FRHCLife Insurance — 9

0%—

FRHCMotor Vehicle — 9

0%—

FRHCProperty Damage — 9

0%—

FRHCVehicle Owners — 9

1%—

FRHCAccident Insurance — 9

0%—

Other financials

Income statement

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Revenue$844.6M+22.5%

Gross profit$764.5M+18.2%

Net income$199.5M+62.3%

Balance sheet

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Total debt$932.5M+34.2%

Total equity$5.4B+16.0%

Total assets$13.8B+16.4%

Cash flow

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Operating cash flow-$55.5M-131%

Valuation

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Market cap$5.3B+15.6%

P/E4.7×—

P/S1.4×-0.5×

Profitability

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Gross margin94.1%-3.2pp

Net margin29.3%—

Returns & leverage

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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: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

Marine & Energy	Marine & Energy / Average Annual Percentage Payout of Incurred Loss and LAE by Age, Net of Reinsurance	Marine & Energy / Average Annual Percentage Payout of Incurred Loss and LAE by Age, Net of Reinsurance	Marine & Energy / Average Annual Percentage Payout of Incurred Loss and LAE by Age, Net of Reinsurance	Marine & Energy / 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
	12.1%	27.1%	17.3%	12.1%	6.4%	6.5%	0.5%	0.4%	0.1%	0.1%

Item 16. Form 10-K Summary.

FAQ

What is White Mountains Insurance Group's marine & energy — 9?: White Mountains Insurance Group (WTM) reported marine & energy — 9 of 0.1% in Q4 2025.
How has White Mountains Insurance Group's marine & energy — 9 changed year-over-year?: White Mountains Insurance Group's marine & energy — 9 decreased by 66.7% year-over-year, from 0.3% to 0.1%.
What does marine & energy — 9 mean?: Tracks the frequency or severity of claims development for the Marine and Energy segment over a defined historical period. This metric assists investors in understanding the volatility and long-term accuracy of the segment's actuarial reserving practices.