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USFinancial Services

White Mountains Insurance Group Ltd (WTM)

US · Financial Services · Insurance - Property & Casualty

$2,058.32-0.20%
Last close · 2026-09-17

Latest quarter · ended 2026-06-30

Revenue
$844.6M
Revenue YoY
+22.5%
Net profit
$199.5M
Profit YoY
+62.3%
EPS
$-3.84
Net margin
23.6%

Key statistics

Market cap
$4.88B
P/E
4.7
Forward P/E
13.9
P/B
0.91
Book value
$2,197.77
EPS (TTM)
$434.15
Dividend yield
0.05%
52-week high
$2,333.00
52-week low
$1,647.25
50-day MA
$2,136.59
200-day MA
$2,127.73
Beta
0.29

Analyst view

with an average price target of $360.00.

Shareholding

Insiders
3.22%
Institutions
96.17%

Largest institutional holders

FundStake
Dimensional Fund Advisors, Inc.6.66%
Neuberger Berman Group LLC5.23%
River Road Asset Management, LLC4.86%
Vanguard Portfolio Management, LLC4.84%
BlackRock Inc4.75%
Vanguard Capital Management, LLC4.57%
Fuller & Thaler Asset Management Inc4.38%
Cooke & Bieler LP3.57%

Recent filings & reports

DocumentDate
Board / officer change · Q3 2026
WHITE MOUNTAINS INSURANCE GROUP, LTD. - 8-K FILING SUMMARY HEADLINE NUMBERS • Board size increased: From 10 to 11 directors following Stephen Klar's
2026-08-27
Quarterly report · Q2 2026
WHITE MOUNTAINS INSURANCE GROUP, LTD. - Q2 2026 10-Q SUMMARY HEADLINE NUMBERS • Total Assets: $13,766.7 million (June 30, 2026) vs. $12,306.5 millio
2026-08-06
Results announced · Q3 2026
WHITE MOUNTAINS INSURANCE GROUP, LTD. — Q2 2026 EARNINGS SUMMARY --- HEADLINE NUMBERS • Book value per share: $2,258 as of June 30, 2026, up 4% in
2026-08-06
Reg FD disclosure · Q2 2026
WHITE MOUNTAINS INSURANCE GROUP, LTD. - 8-K SUMMARY HEADLINE NUMBERS • No specific financial figures disclosed in this filing • Document is a Form 8
2026-06-05
Board / officer change · Q2 2026
WHITE MOUNTAINS INSURANCE GROUP, LTD. - FORM 8-K SUMMARY HEADLINE NUMBERS • Annual General Meeting held May 21, 2026 in Hamilton Parish, Bermuda • 2
2026-05-21
Quarterly report · Q1 2026
WHITE MOUNTAINS INSURANCE GROUP, LTD. – Q1 2026 SUMMARY HEADLINE NUMBERS • Total assets: $13,168.9 million (March 31, 2026) vs. $12,306.5 million (D
2026-05-06
Proxy statement · Q2 2026
WHITE MOUNTAINS INSURANCE GROUP, LTD. — PROXY SUMMARY FOR RETAIL INVESTORS WHAT SHAREHOLDERS ARE VOTING ON • Proposal 1: Election of four directors
2026-04-01
Annual report FY2025
WHITE MOUNTAINS INSURANCE GROUP, LTD. — 2025 10-K SUMMARY HEADLINE NUMBERS • Market capitalization (June 30, 2025): $4,475 million • Outstanding sha
2026-02-27

Readable in the app.

Corporate actions

ActionDetailDate
Dividend$1.00 / share
ex-date Mar 16, 2026 · pay Mar 25, 2026
2026-03-16

Deals & corporate news

AnnouncementDate
Completed acquisition of majority interest in BaseSix Systems LLC
White Mountains Insurance Group announced that its subsidiary, White Mountains Partners LLC, completed the acquisition of a majority stake in BaseSix Systems LLC, a low voltage electrical sy
2026-04-01
Completed $125 million structured capital investment into Bishop Street
White Mountains Insurance Group announced on February 26, 2026, that it has completed a $125 million structured capital investment into Bishop Street Underwriters, a RedBird Capital Partners
2026-02-26
Specialty reinsurance subsidiary renews Outrigger Re Ltd. for 2026
White Mountains Insurance Group announced that its subsidiary Ark Insurance has renewed its reinsurance agreement with Outrigger Re Ltd. for 2026 on similar terms as 2025. Outrigger is a rei
2026-01-07
Completed sale of controlling interest in Bamboo to CVC Capital Partners
White Mountains Insurance Group completed the sale of its controlling interest in Bamboo Insurance to CVC Capital Partners on December 8, 2025. White Mountains retains approximately 15% owne
2025-12-08
Indirect subsidiaries enter securities purchase agreement with CVC Capital Partners
White Mountains Insurance Group agreed to sell approximately 77% of its equity stake in Bamboo Ide8 Insurance Services to CVC Capital Partners for $1.75 billion enterprise value, while retai
2025-10-03

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Data updated 2026-09-18.