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White Mountains Insurance Group WTM Bamboo Captive — Assumed

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Other financials

Income statement

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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:AssumedPremiumsEarned.

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 bamboo captive — assumed?
White Mountains Insurance Group (WTM) reported bamboo captive — assumed of $7.18M in Q4 2025.
How has White Mountains Insurance Group's bamboo captive — assumed changed year-over-year?
White Mountains Insurance Group's bamboo captive — assumed decreased by 33.9% year-over-year, from $10.85M to $7.18M.
What does bamboo captive — assumed mean?
The total premiums accepted by the captive segment from other insurance entities or internal business units. This measures the scale of risk the captive has taken on from external or affiliated sources.