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

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

SEBMarine — Selling General And Administrative Expense

$31M+14.8%

SEBMarine — Segment And Consolidated Operating Income Loss Total

$34M-40.4%

SEBMarine — Operating Income And Income From Affiliates

$35M-39.7%

SEBMarine — Income Loss From Equity Method Investments

$1M0.0%

SEBMarine — D&A

$18M+12.5%

SEBMarine — Cost of Goods Sold

$364M+13.4%

Other financials

Income statement

See full

Revenue$517.8M-10.4%

Gross profit$475.1M-16.7%

Net income-$27.2M-180%

Balance sheet

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Total debt$834.8M+23.5%

Total equity$5.4B+19.2%

Total assets$13.2B+19.7%

Cash flow

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Operating cash flow$30.5M+176%

Valuation

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Market cap$4.99B+9.8%

Profitability

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Gross margin94.9%-3.7pp

Net margin28.4%—

Returns & leverage

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Return on equity21.2%—

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 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 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.