What is White Mountains Insurance Group's marine & energy — 6?

White Mountains Insurance Group (WTM) reported marine & energy — 6 of 6.5% in Q4 2025.

How has White Mountains Insurance Group's marine & energy — 6 changed year-over-year?

White Mountains Insurance Group's marine & energy — 6 decreased by 5.8% year-over-year, from 6.9% to 6.5%.

What does marine & energy — 6 mean?

Represents the expense ratio for the Marine and Energy segment, capturing the operational and administrative costs required to manage this business line. Monitoring this helps determine the cost-efficiency of the segment's underwriting operations.

White Mountains Insurance Group (WTM) Marine & Energy — 6

Screener

Other product segments

Casualty-Active

11.2%-4.3%

Casualty-Runoff

6.7%-1.5%

Specialty

2.5%0.0%

Property and Accident & Health

1.9%+46.2%

Similar metrics at other companies

FRHCCivil Liability — 6

6%+4.1pp

FRHCLife Insurance — 6

0%—

FRHCMotor Vehicle — 6

0%—

FRHCProperty Damage — 6

0%—

FRHCVehicle Owners — 6

0%—

FRHCAccident Insurance — 6

0.3%—

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:ShortdurationInsuranceContractsHistoricalClaimsDurationYearSix.

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 — 6?: White Mountains Insurance Group (WTM) reported marine & energy — 6 of 6.5% in Q4 2025.
How has White Mountains Insurance Group's marine & energy — 6 changed year-over-year?: White Mountains Insurance Group's marine & energy — 6 decreased by 5.8% year-over-year, from 6.9% to 6.5%.
What does marine & energy — 6 mean?: Represents the expense ratio for the Marine and Energy segment, capturing the operational and administrative costs required to manage this business line. Monitoring this helps determine the cost-efficiency of the segment's underwriting operations.