Company Analysis

White Mountains Insurance Group Ltd. (WTM)

NYSE: WTM · Fire, Marine & Casualty Insurance · Hanover, NH · filing with the SEC since 1994
Grade6.3
◀ Past 6.6● Present 6.4▶ Future 5.9

The grade of White Mountains Insurance Group Ltd.

Nine metrics read from its own filings, by tense
Headline grade
6.3/10
◀ Past6.640% of the headline
● Present6.435% of the headline
▶ Future5.925% of the headline

All three tenses have at least two readings, so the archetype blend applies as printed.

All nine metrics read as filed from the record.

◀ Past

What did they actually do?

6.6/1040% of the headline grade · 3 of 3 filed

Surviving crises

as filed
7.3/10

Has it survived what it has been through?

No warning events in its filings since 2017.

weight 33% of this tense · 73rd percentile among 60 sector filers · read for itself

From the record

White Mountains Insurance Group Ltd.'s filings since 2017 show no warning events in the scan: no bankruptcy or receivership notice, no debt default notice, no exchange listing notice, no restatement warning, no auditor change, no material cyber incident and no late-report notice (its current reports).

A production reading, recomputed from the filings on every data build, read from EDGAR Nov 13, 2026.

Track record

as filed
5.3/10

What has it actually done, year after year?

+42.1% a year over 10 filed years; profitable in 8 of 10.

weight 22% of this tense · 53rd percentile among 56 sector filers · read for its customers

From the record

White Mountains Insurance Group Ltd.'s 10 filed years say what it did: revenue went from $158 million in fiscal 2016 to $3.7 billion in fiscal 2025, up 42.1% a year; it rose in 7 of 9 years; the deepest fall was 31% from fiscal 2020 to fiscal 2021; net income was positive in 8 of 10 of those years (its annual reports).

What it rests on

  • revenue growth over the filed span42.1%top 8% of its family
  • the share of years revenue rosetop 50% of its family
  • the share of filed years with a profitbottom 43% of its family
  • the deepest fall from a revenue peak31.4%bottom 26% of its family

A production reading, recomputed from the filings on every data build, read from EDGAR Nov 13, 2026.

Shareholder treatment

as filed
6.6/10

How has it treated the people who own it?

Share count shrank 3.6% a year. 16% of cash flow returned. Insiders: 4 sales, 0 purchases.

weight 45% of this tense · 66th percentile among 49 sector filers · read for its shareholders

From the record

Over the 3 fiscal years to 2025-12-31, White Mountains Insurance Group Ltd.'s diluted share count shrank about 3.6% a year, and dividends and buybacks returned about 16% of its operating cash flow over 3 years (its filed statements). Its officers and directors filed 4 sales and 0 purchases of their own stock on the open market in the year to 2026-11-05 (their Form 4 filings).

What it rests on

  • the share count over the yearstop 13% of its family
  • cash returned against operating cash flowbottom 46% of its family

A production reading, recomputed from the filings on every data build, read from EDGAR Nov 13, 2026.

● Present

What are they doing right now?

6.4/1035% of the headline grade · 3 of 3 filed

Financial health

as filed
6.5/10

Is it financially healthy right now?

ROE 22%: 22¢ of profit per shareholder dollar. Leverage 56%: owes 56¢ per asset dollar.

weight 45% of this tense · 65th percentile among 60 sector filers · read for itself

From the record

Return on equity: in the fiscal year ended 2025-12-31, White Mountains Insurance Group Ltd. earned about 22 cents of profit for every dollar of shareholders' money, and gross profitability: its products earned about 29 cents per dollar of everything the company owns (revenue less the cost of revenue). Leverage: it owed about 56 cents per dollar of assets, and net share issuance: its share count grew 0.1% over the year (the filed statements).

What it rests on

  • what it owes per dollar of assetstop 7% of its family
  • return on equitytop 26% of its family
  • gross profit against assetstop 50% of its family
  • the share count against the year beforebottom 42% of its family

A production reading, recomputed from the filings on every data build, read from EDGAR Nov 13, 2026.

Industry position

as filed
8.3/10

How strong is its position in its industry?

top 17% of 60 in its family; net margin 32.2%.

weight 33% of this tense · 83rd percentile among 60 sector filers · read for its customers

From the record

White Mountains Insurance Group Ltd.'s standing among 60 graded names in its industry family: revenue of $3.7 billion in fiscal 2025 ranks in the top 37% by size; a net margin of 32.2% ranks in the top 9%; revenue growth of 47.7% a year over the last 3 filed years ranks in the top 6% (its annual reports).

What it rests on

  • revenue against the family$3.73Btop 37% of its family
  • net margin32.2%top 9% of its family
  • three-year revenue growth47.7%top 6% of its family

A production reading, recomputed from the filings on every data build, read from EDGAR Nov 13, 2026.

Leadership

as filed
3.3/10

What are the people in charge doing?

bottom 33% of 47 in its family for leadership; chief executive since 2026.

weight 22% of this tense · 33rd percentile among 47 sector filers · read for its shareholders

From the record

White Mountains Insurance Group Ltd.'s leadership, from its insiders' filings and its current reports: the chief executive on the record is Caffrey, Liam P (Chief Executive Officer, as filed), filing under that title since 2026-01-02, 10 months (bottom 14% of its family); the 16 officers and directors filing in the last fifteen months have been on the record a median of 5.5 years (bottom 26%); 5 officer or director changes were reported on Form 8-K since 2023-11-13, against the 16 people in charge now (top 39%; fewer changes for each person reads higher) (the Form 4 record, its Form 8-K reports). Years count from a person's first filing in the SEC's data sets, which begin in 2006, so each is a floor.

What it rests on

  • officer and director changes on Form 8-K, against the people in charge5 in three years among 16 peopletop 39% of its family
  • the median years the people in charge have filed5.5 yearsbottom 26% of its family
  • the chief executive's years on the record11 monthsbottom 14% of its family

A production reading, recomputed from the filings on every data build, read from EDGAR Nov 13, 2026.

▶ Future

What are they set up to do next?

5.9/1025% of the headline grade · 3 of 3 filed

Room to expand

as filed
3.6/10

How much room does it have to grow?

bottom 36% of 60 in its family for room to expand.

weight 33% of this tense · 36th percentile among 60 sector filers · read for itself

From the record

White Mountains Insurance Group Ltd.'s room to grow, from the newest filed statements (fiscal 2025): cash of $186 million against debt of $837 million leaves -5.3% of its assets as net cash, bottom 16% of its family; cash from operations less capital spending is 14.7% of revenue (bottom 43%); a gross margin of 95.9% (top 50%) (its annual report).

What it rests on

  • cash less debt against assets-5.3%bottom 16% of its family
  • cash from operations less capital spending against revenue14.7%bottom 43% of its family
  • gross margin95.9%top 50% of its family

A production reading, recomputed from the filings on every data build, read from EDGAR Nov 13, 2026.

Growth drivers

as filed
8.4/10

What could actually drive growth from here?

top 16% of 56 in its family for growth drivers.

weight 33% of this tense · 84th percentile among 56 sector filers · read for its customers

From the record

White Mountains Insurance Group Ltd.'s growth drivers, from the filed years to fiscal 2025: revenue grew 47.7% a year over the last three filed years against 42.1% over all 10, speeding up (top 29% of its family); the newest year grew 66.8% (top 3%) (its annual reports). White Mountains Insurance Group Ltd. reported 5 lines of business in fiscal 2025: Ark Insurance Holdings Limited WM Outrigger Re at $1.9 billion, Bamboo Insurance Services LLC at $246 million, Kudu Investment Management LLC at $183 million, and 2 more. 5 of 5 grew in the latest filed year, and the largest line is 78% of revenue (its annual report).

What it rests on

  • three-year growth against the whole span+5.6 points a yeartop 29% of its family
  • the newest year's revenue growth66.8%top 3% of its family

A production reading, recomputed from the filings on every data build, read from EDGAR Nov 13, 2026.

Expectations vs reality

as filed
5.7/10

Did its newest year beat what its own record pointed to?

top 43% of 56 in its family for expectations against reality.

weight 33% of this tense · 57th percentile among 56 sector filers · read for its shareholders

From the record

White Mountains Insurance Group Ltd.'s newest year against its own record: revenue of $3.7 billion in fiscal 2025 came in 19.9% above the $3.1 billion its prior three years' pace pointed to (top 10% of its family); net income of $1.2 billion against a prior three-year average of $526 million (top 37%); a net margin of 32.2% against 33.7% before (bottom 19%) (its annual reports).

What it rests on

  • revenue against the prior three years' pace19.9%top 10% of its family
  • net income against the prior three years' average+129%top 37% of its family
  • net margin against its prior average-1.5 pointsbottom 19% of its family

A production reading, recomputed from the filings on every data build, read from EDGAR Nov 13, 2026.

The grade is the company against its own industry, from its filings. It is not a view on the share price. How the grade is made

SI Assistanton WTM · research, not advice