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WTM White Mountains Insurance Group Ltd.

Financials, filed as WHITE MTNS INS GROUP LTD (COM), Equity As of 2026 Q2 among managers we track Quote on Google Finance, opens in a new tab

Sold by 2 managers in 2026 Q2

  • 2 Owners
  • Max 1.9%
  • $61M
  • 2 reduce

In 2026 Q2 Mason Hawkins and Murray Stahl trimmed White Mountains Insurance Group.

Who owns this now

Largest portfolio weights among holders, up to 1.9% (Mason Hawkins, Southeastern Asset Management). Not free-float ownership.

  1. Mason Hawkins Reduce 1.9%
  2. Murray Stahl Reduce 0.29%

Who owns WTM

Sorted by value, long equity only, as of 2026 Q2.

History
Mason Hawkins, Southeastern Asset Management 1.9%, was 2.0% Reduce −9.3% 17,104 $35M History
Murray Stahl, Horizon Kinetics Asset Management 0.29%, was 0.32% Reduce −6.9% 12,206 $25M History

2 current, options excluded

Weight bar: held both quarters added sold at this quarter’s reported price

Insider trades

Open-market buys and sales by WTM's executives, directors and 10% owners in the last 12 months, from their Form 4s

All WTM insider trades
  • None no insider bought on the open market
  • $20.8M sold by 3 insiders outside a trading plan
  • None no planned (10b5-1) sales
  1. Reid Tarlton Campbell Director
    Sale
    $10.2M 5,000 shares at $2,050.00 32% of stake
    Traded Dec 19, 2025 Filed Dec 22, 2025
    ↗
  2. Philip A Gelston Director
    Sale
    $338K 165 shares at $2,048.51 9.5% of stake
    Traded Dec 16, 2025 Filed Dec 16, 2025
    ↗

Also filed in the last 12 months, not counted as buying or selling: 15 stock grants, 6 gifts, and 4 share withholdings for taxes.

Congress

1 member of Congress traded WTM in the last three years: 1 buy and 0 sales. 1 member listed it in 2025 annual reports.

All Congress trades
  1. J. French Hill R-AR-2 Buy $50K–$100K Jun 23, 2025 filed Jul 24, 2025

SEC filings

Recent issuer filings from EDGAR, 20 shown.

Filed Form Detail Links
8-K 5.02,9.01 Filing Doc
8-K 2.02,9.01 Filing Doc
10-Q Filing Doc
8-K 7.01,9.01 Filing Doc
8-K 5.02,5.07,9.01 Filing Doc
8-K 1.01,2.03,9.01 Filing Doc
SCHEDULE 13G/A — Filing Doc
8-K 2.02,9.01 Filing Doc
10-Q Filing Doc
SCHEDULE 13D/A — Filing Doc
SCHEDULE 13G — Filing Doc
DEF 14A FORM DEF 14A Filing Doc
8-K 8.01,9.01 Filing Doc
SCHEDULE 13G/A — Filing Doc
10-K Filing Doc
8-K 8.01,9.01 Filing Doc
SCHEDULE 13G/A — Filing Doc
8-K 2.02,9.01 Filing Doc
SCHEDULE 13G — Filing Doc
8-K 8.01 Filing Doc

Source: SEC EDGAR submissions, updated 5 days ago. All on EDGAR

Financials

US-GAAP annual figures by fiscal year, as tagged in Form 10-K. Each value links to its SEC filing.

Income statement

Metric FY2023 FY2024 FY2025
Net income $0.509B $0.23B $1.11B

Balance sheet

Metric FY2023 FY2024 FY2025
Total assets $8.39B $9.93B $12.31B
Total equity $4.24B $4.48B $5.43B

Cash flow

Metric FY2023 FY2024 FY2025
Cash from operations $404.1M $586.8M $550.5M
Cash from investing -$543.9M -$447M -$666.9M
Cash from financing $7.2M $4.2M $35.6M
Net change in cash * -$132.6M $144M -$80.8M

Source: SEC companyfacts (US-GAAP 10-K). A * marks a computed figure, not a single XBRL tag. Fiscal years are as the issuer labels them. Follow The Filings does not adjust or audit these figures.

Ownership over time

13Fs that reported it each quarter. Click a bar for that quarter’s holders.