White Mountains Insurance Group Ltd. (WTM) intrinsic value & 10-year financials

White Mountains Insurance Group Ltd. (WTM) has a Graham intrinsic value of $9,091.98 per share. At $2,160.31 on Oct 17, 2026, the stock trades 76% below that value. Over the last 10 fiscal years revenue grew 11.9% a year to $3.7B, with an average return on invested capital of 10.1%.

Graham intrinsic value
$9,091.98
Share price (Oct 17, 2026)
$2,160.31
Price vs Graham value
76% below
Market cap
$5.5B
Revenue (FY2025)
$3.7B
Revenue growth (10-yr CAGR)
11.9%
ROIC (10-yr avg)
10.1%
Free cash flow (FY2025)
—

WTM 10-year financial history

Fiscal year Revenue Net income EPS (diluted) Free cash flow Operating margin ROIC
FY2025 $3.7B $1.1B $430.14 — — 20.4%
FY2024 $2.2B $230.4M $89.79 — — 4.9%
FY2023 $2.2B $509.2M $198.60 — — 11.6%
FY2022 $1.2B $792.8M $276.96 — — 19.7%
FY2021 $427.5M -$275.4M -$89.46 — — -6.8%
FY2020 $307.9M $663.4M $226.97 — — 17.8%
FY2019 $294.3M $376.6M $130.27 — — 11.9%
FY2018 $401.2M -$191.4M -$41.76 — — -6.0%
FY2017 $163.6M $593.1M $146.06 — — 16.6%
FY2016 $1.4B $419.8M $82.19 — — 11.2%

Source: annual 10-K filings on SEC EDGAR. Figures in USD.

Executive summary

WHITE MOUNTAINS INSURANCE GROUP LTD is a consistent compounder, expanding top-line revenue at 11.9% annually over the past decade.

WHITE MOUNTAINS INSURANCE GROUP LTD returns on capital have been average, hovering around 10.1% ROIC over the decade.

Over the decade, WHITE MOUNTAINS INSURANCE GROUP LTD shows that management has aggressively returned capital to shareholders by retiring 48.8% of outstanding shares, and that the company has leveraged its balance sheet to sustain operations.

Benjamin Graham lens

Under Benjamin Graham's formula using SEC EDGAR fundamentals, WHITE MOUNTAINS INSURANCE GROUP LTD is modeled at 8.0% normalized earnings growth with a 5.1% bond-yield adjustment. The resulting Graham intrinsic value estimate is $9091.98 per share.

WTM stock: frequently asked questions

What is the intrinsic value of White Mountains Insurance Group Ltd. (WTM) stock?

Using Benjamin Graham's revised formula, V = EPS × (8.5 + 2g) × 4.4 / Y, with reported diluted earnings per share, a 8.0% normalized growth rate (capped at 15%) and a 5.1% AAA corporate bond yield, WTM's intrinsic value is about $9,091.98 per share.

Is WTM stock undervalued?

At $2,160.31 (close on Oct 17, 2026), WTM trades 76% below its Graham value of $9,091.98. On Graham's terms that leaves a margin of safety. A formula is a starting point for research, not a recommendation.

How fast has White Mountains Insurance Group Ltd. grown?

Revenue went from $1.4B in fiscal 2016 to $3.7B in fiscal 2025, a compound annual growth rate of 11.9%. Net income was $1.1B in fiscal 2025.

What is WTM's return on invested capital?

Average ROIC over the last 10 fiscal years was 10.1%, and average return on equity was 10.8%. Sustained ROIC above about 15% usually points to a durable competitive advantage.

Where does this WTM data come from?

From White Mountains Insurance Group Ltd.'s annual 10-K filings on SEC EDGAR, most recently filed May 6, 2026. Prices are end-of-day snapshots; valuations are formula outputs, not investment advice.

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