WTM

WHITE MOUNTAINS INSURANCE GROUP LTD WTM

NYSEMid CapFinancials
InternationalScored off the official board: an annual-only filer, so this data lags a domestic quarterly filer.

13F Pro quality score

Rank #15 of 2,925TOP 1%

Why it scores 82Financials peers →

Rankings refresh quarterly once 80% of peers have filed. Next update: ~Nov 14, 2026.

Revenue

$844.60M

Quarter to Jun 30

Net income

$199.50M

Quarter to Jun 30

Operating margin

30.3%

Quarter to Jun 30

Top Institutional Holders

as of Q2 2026
$4.56B total
DIMENSIONAL FUND ADVISORS LP
$329.58M+1.5%
Neuberger Berman Group LLC
$247.03M-4.5%
BlackRock, Inc.
$244.39M+4.0%
River Road Asset Management, LLC
$240.26M-3.8%
VANGUARD PORTFOLIO MANAGEMENT LLC
$232.16M-3.1%
VANGUARD CAPITAL MANAGEMENT LLC
$222.85M-1.5%
FULLER & THALER ASSET MANAGEMENT, INC.
$211.26M-2.6%
COOKE & BIELER LP
$176.49M-18.8%
Wallace Capital Management Inc.
$166.01M+1.6%
FIDUCIARY MANAGEMENT INC /WI/
$137.98M-21.8%
GENDELL JEFFREY L
$122.83M+56.7%
Boston Partners
$115.28M-3.3%
LONDON CO OF VIRGINIA
$112.08M-5.4%
STATE STREET CORP
$104.20M+2.2%
GEODE CAPITAL MANAGEMENT, LLC
$102.47M+17.3%
MORGAN STANLEY
$97.18M-21.0%
REINHART PARTNERS, LLC.
$92.27M+19.0%
T. Rowe Price Investment Management, Inc.
$70.99M-17.5%
LORD, ABBETT & CO. LLC
$68.07M-0.8%
AMERICAN CENTURY COMPANIES INC
$64.50M+274.4%
NORGES BANK
$57.96M--
Spears Abacus Advisors LLC
$57.18M-1.6%
BANK OF AMERICA CORP /DE/
$51.89M-11.7%
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
$48.74M-3.0%
Mraz, Amerine & Associates, Inc.
$46.07M+0.2%
See all 356 institutional holders →
Reading the latest SEC filing…

Key Metrics

Revenue

Q2 2026
EDGAR

Net Income

Q2 2026
EDGAR

EPS (Diluted)

Q2 2026
EDGAR

Operating Margin

Q2 2026
EDGAR

ROIC

Q2 2026
EDGAR

Debt/Equity

Q2 2026
EDGAR

Financial Trends

Revenue & Net Income

13fpro.ai/company/WTM

Earnings Per Share

13fpro.ai/company/WTM

Loading ratio trend…

WTM key financials by period

Reported revenue, net income and operating margin by fiscal year, from WHITE MOUNTAINS INSURANCE GROUP LTD's annual filings on SEC EDGAR.

WHITE MOUNTAINS INSURANCE GROUP LTD reported revenue, net income and margins by fiscal period, from SEC filings.
PeriodRevenueNet incomeOp. margin
FY 2025$3.7B$1.1B35.6%
FY 2024$2.2B$230.4M14.1%
FY 2023$2.2B$509.2M26.1%
FY 2022$1.2B$792.8M-12.9%
FY 2021$614.4M$-275.4M-44.5%
FY 2020$895.6M$663.4M73.7%
Source: WTM filings on SEC EDGAR →

Companies similar to WTM

Ranked by quality-factor profile and overlapping institutional ownership, from the latest 13F filings and SEC financials.

WTM insiders

Officers, directors and 10% owners with a Form 4 filed in the last 24 months, most recent first. From SEC EDGAR.

Congress trading in WTM

1 transaction in WTM reported by 1 member of Congress under the STOCK Act, most recent trade Jun 23, 2025. Reported transactions, not recommendations.

All Congress stock trades →

About WHITE MOUNTAINS INSURANCE GROUP LTD (WTM): stock profile, AI score and financials

WHITE MOUNTAINS INSURANCE GROUP LTD (WTM) stock profile, AI quality score, and SEC EDGAR financial data, a Financials sector company. 13F Pro's AI-powered ranking engine scores WTM at 82.2/100 on a composite quality score built from its SEC filings, placing it at rank #15 of 2,925 stocks — the top 1% of the AI-ranked universe. Based on the latest XBRL financial filings (Q2 2026), WHITE MOUNTAINS INSURANCE GROUP LTD reports quarterly revenue of $844.6M, net income of $199.5M, an operating margin of 30.3%. Top institutional holders of WTM by reported 13-F value include DIMENSIONAL FUND ADVISORS, Neuberger Berman Group, BlackRock, based on the most recent SEC filings. WTM trades on the NYSE exchange and files with the SEC under CIK 776867. 13F Pro's AI research platform runs 10 specialized AI analysts — value, growth, momentum, macro, and activist specialists — that debate WTM daily and publish AI-generated analysis with cited SEC sources. The platform aggregates historical XBRL financial facts, 10-Q and 10-K filings, insider Form 4 transactions, and institutional 13-F holdings for WHITE MOUNTAINS INSURANCE GROUP LTD directly from SEC EDGAR.

Financials through the period ended SEC EDGAR: CIK 776867 →