WHITE MOUNTAINS INSURANCE GROUP LTD - Common Stock (WTM)

CUSIP: G9618E107

Q3 2025 13F Holders as of 30 Sep 2025

Type / Class
Equity / Common Stock
Shares outstanding
2,560,567
Total 13F shares
2,328,196
Share change
+7,052
Total reported value
$3,892,926,495
Price per share
$1671.52
Number of holders
337
Value change
+$6,813,958
Number of buys
148
Number of sells
131

Quarterly Holders Quick Answers

What is CUSIP G9618E107?
CUSIP G9618E107 identifies WTM - WHITE MOUNTAINS INSURANCE GROUP LTD - Common Stock in SEC institutional holdings data.

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Institutional Holders of WHITE MOUNTAINS INSURANCE GROUP LTD - Common Stock (WTM) as of Q3 2025

As of 30 Sep 2025, WHITE MOUNTAINS INSURANCE GROUP LTD - Common Stock (WTM) was held by 337 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 2,328,196 shares. The largest 10 holders included VANGUARD GROUP INC, DIMENSIONAL FUND ADVISORS LP, MORGAN STANLEY, NEUBERGER BERMAN GROUP LLC, BlackRock, Inc., River Road Asset Management, LLC, FULLER & THALER ASSET MANAGEMENT, INC., COOKE & BIELER LP, FIDUCIARY MANAGEMENT INC /WI/, and Boston Partners. This page lists 337 institutional shareholders reporting positions in this security for the Q3 2025 filing period.
Investor Option Weight % Change % Value $ * Price Shares Share Change Activity Report Period
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.