WHITE MOUNTAINS INSURANCE GROUP LTD - COMMON (WTM)

CUSIP: G9618E107

Q1 2021 13F Holders as of 31 Mar 2021

Security identity
Security type / class
Equity / COMMON
Shares outstanding
2,481,286
Holder snapshot
Total 13F shares
2,708,626
Share change
+20,067
Total reported value
$3,023,933,244
Reported price per share
$1114.90
Number of holders
245
Value change
+$25,864,750
Number of buys
107
Number of sells
104

Security key

G9618E107

Report period

Q1 2021

Institutions

245

Top holders

10

WTM full security history Ownership snapshot Full 13F holder table Newer quarter: Q2 2021 Previous quarter: Q4 2020 WHITE MOUNTAINS INSURANCE GROUP LTD SEC filings WHITE MOUNTAINS INSURANCE GROUP LTD company facts WHITE MOUNTAINS INSURANCE GROUP LTD 13D/G history

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Ownership snapshot

Top reported holders of WTM - WHITE MOUNTAINS INSURANCE GROUP LTD - COMMON (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Lead holder
VANGUARD GROUP INC
13D/G signal
—
Evidence rows
15
Latest as of
31 Dec 2020
13F Lead comparable stake: 11% Showing 1-6 of 15 holder rows.
Holder Evidence Ownership % Position 12M Net Δ As of
VANGUARD GROUP INC
13F
Company
13F
11%
$281,125,000
280,939 shares
 — 31 Dec 2020
WELLINGTON MANAGEMENT GROUP LLP
13F
Company
13F
10%
$250,886,000
250,720 shares
 — 31 Dec 2020
ATLANTA CAPITAL MANAGEMENT CO L L C
13F
Company
13F
8.1%
$200,621,000
200,489 shares
 — 31 Dec 2020
River Road Asset Management, LLC
13F
Company
13F
6.5%
$161,511,000
161,404 shares
 — 31 Dec 2020
BlackRock Finance, Inc.
13F
Company
13F
5.5%
$136,663,000
136,575 shares
 — 31 Dec 2020
DIMENSIONAL FUND ADVISORS LP
13F
Company
13F
5.5%
$136,012,000
135,923 shares
 — 31 Dec 2020
How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q1 2021

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions
245
Shares
2,708,626
Rows available
245
Investor Option Weight % Change % Reported value * Price Shares Share Change Activity Report Period

* Reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that failed the local validity check.

Compare Q1 2021 vs Q4 2020 Across Filers

Q4 2020 holders
234
Q1 2021 holders
245
Holder diff
11
Investor Q4 2020 Shares Q1 2021 Shares Share Diff Share Chg % Q4 2020 value Q1 2021 value Value change Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
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