Companies / White Mountains Insurance Group Ltd

White Mountains Insurance Group Ltd

NYSE: WTMCIK 776867HANOVER, NHwhitemountains.com ↗

Financials · FY2025

Revenue$3.73B
Net income$1.20B
Total debt$932.50M
Cash$136.40M
Diluted EPS$430.14
Shares outstanding2.4M

Ownership

2.4M shares outstanding · as of Aug 3, 2026
1.9%Insiders
Ownership
Insiders1.91%45,577
Institutions93.38%2,228,684
Public float4.71%112,460

% of common shares outstanding (exact, from the latest cover-page filing). Institutions are quarterly 13F snapshots; insiders reflect current officers & directors.

Insiders 10

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Insider% of sharesShares
Seelig Robert LawrenceEVP & General Counsel
0.75%17,857
Campbell Reid TarltonDirector
0.44%10,575
Caffrey Liam PCEOChief Executive Officer · Director
0.15%3,650
Hicks Weston MDirector
0.12%2,936
Harrison Giles EPresident
0.11%2,675
Tanner David AllenDirector
0.08%2,014
Choksi Mary CDirector
0.08%1,993
Hildreth MichaelaMD & Chief Accounting Officer
0.08%1,825
Papamichael Michael AChief Financial Officer
0.05%1,200
Carlson Peter MDirector
0.04%852

Institutional holders 358

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HolderValue% of shares
Vanguard Group Inc$489.79M9.88%
Dimensional Fund Advisors LP$325.43M6.56%
Neuberger Berman Group LLC$269.42M5.43%
River Road Asset Management, LLC$264.78M5.05%
BlackRock, Inc.$244.39M4.94%
Fuller & Thaler Asset Management, Inc.$229.72M4.38%
Cooke & Bieler L.P.$221.47M4.47%
Fiduciary Management Inc /Wi$187.71M3.78%
Morgan Stanley$170.72M3.44%
Wallace Capital Management Inc.$166.96M3.37%

Activity

Jun 30, 2026View all →
InsidersInstitutions
Who's accumulating and trimming this stock (13F).
DateActorActionSecurityValueShares ΔPosition afterImpact
Q1 2026
as of
Norges Bank
13F manager
ExitCommon stock$-66.88M-32K
-100.00%
0
high
Q1 2026
as of
Boston Partners
13F manager
TrimCommon stock$-42.73M-19K
-25.29%
57,459
2.41% of shares
medium
Q4 2025
as of
Bank of America Corp /De
13F manager
TrimCommon stock$-20.79M-10K
-25.77%
28,809
1.21% of shares
medium
Q1 2026
as of
Reinhart Partners, LLC.
13F manager
TrimCommon stock$-14.50M-7K
-15.01%
37,374
1.57% of shares
medium
Q1 2026
as of
Jeffrey L. Gendell
13F manager
AddCommon stock$11.63M+5K
+16.28%
37,814
1.58% of shares
medium
Q2 2026
as of
BlackRock, Inc.
13F manager
AddCommon stock$11.57M+6K
+4.97%
117,871
4.94% of shares
medium
Q1 2026
as of
Victory Capital Management, Inc.
13F manager
AddCommon stock$10.65M+5K
+77.02%
11,145
0.47% of shares
medium
Q1 2026
as of
WCM Investment Management, LLC
13F manager
TrimCommon stock$-10.28M-5K
-43.88%
5,995
0.25% of shares
medium

5%+ ownership events

Schedule 13D / 13G
FilerStance% of classSharesDate
Vanguard Group IncPassive13G/A—0—
Neuberger Berman Group LLCPassive13G———
Morgan StanleyPassive13G/A———

Securities

via CUSIP / OpenFIGI
SymbolTypeMarketCUSIPFIGI
WTM——G9618E107—