What does CUSIP G9618E107 represent in this 13F holders report?

CUSIP G9618E107 is the security identifier for WTM - WHITE MOUNTAINS INSURANCE GROUP LTD - COMMON used to aggregate holder disclosures.

How many institutions held WTM - WHITE MOUNTAINS INSURANCE GROUP LTD - COMMON in Q4 2021?

243 institutional investors reported WTM - WHITE MOUNTAINS INSURANCE GROUP LTD - COMMON for Q4 2021. Use the holders table for investor-level position and value details.

WHITE MOUNTAINS INSURANCE GROUP LTD - COMMON (WTM)

CUSIP: G9618E107

Q4 2021 13F Holders as of 31 Dec 2021

Type / Class: Equity / COMMON
Shares outstanding: 2,481,286
Total 13F shares: 2,675,937
Share change: -4,585
Total reported value: $2,714,257,113
Price per share: $1013.88
Number of holders: 243
Value change: -$5,261,729
Number of buys: 80
Number of sells: 111

Quarterly Holders Quick Answers

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

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Explore More Reporting Periods

Jump to adjacent filing periods for faster comparison and easier crawl discovery.

Newer quarter: Q1 2022
Previous quarter: Q3 2021

Recent filing periods for CUSIP G9618E107:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

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

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
VANGUARD GROUP INC	13F	Company	12%	286,062	$305,975,000	—	30 Sep 2021	13F
WELLINGTON MANAGEMENT GROUP LLP	13F	Company	9%	223,860	$239,443,000	—	30 Sep 2021	13F
ATLANTA CAPITAL MANAGEMENT CO L L C	13F	Company	7.1%	176,418	$188,698,000	—	30 Sep 2021	13F
River Road Asset Management, LLC	13F	Company	6.8%	169,077	$180,846,000	—	30 Sep 2021	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	6%	150,113	$160,565,000	—	30 Sep 2021	13F
Boston Partners	13F	Company	5.8%	143,832	$154,009,000	—	30 Sep 2021	13F
BlackRock Finance, Inc.	13F	Company	5%	124,680	$133,360,000	—	30 Sep 2021	13F
FULLER & THALER ASSET MANAGEMENT, INC.	13F	Company	3.9%	95,599	$102,254,000	—	30 Sep 2021	13F
Artisan Partners Limited Partnership	13F	Company	3.3%	83,011	$88,789,000	—	30 Sep 2021	13F
LONDON CO OF VIRGINIA	13F	Company	3.1%	76,050	$81,344,000	—	30 Sep 2021	13F
Wallace Capital Management Inc.	13F	Company	3%	75,345	$80,589,000	—	30 Sep 2021	13F
BANK OF AMERICA CORP /DE/	13F	Company	2.5%	62,867	$67,242,000	—	30 Sep 2021	13F
STATE STREET CORP	13F	Company	2.3%	55,918	$59,810,000	—	30 Sep 2021	13F
REINHART PARTNERS, LLC.	13F	Company	2.2%	55,760	$59,642,000	—	30 Sep 2021	13F
SCOUT INVESTMENTS, INC.	13F	Company	2.2%	54,606	$58,407,000	—	30 Sep 2021	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	1.5%	36,478	$39,017,000	—	30 Sep 2021	13F
FIDUCIARY MANAGEMENT INC /WI/	13F	Company	1.5%	36,043	$38,552,000	—	30 Sep 2021	13F
RAYMOND JAMES & ASSOCIATES	13F	Company	1.4%	35,512	$37,984,000	—	30 Sep 2021	13F
Cannell & Co.	13F	Company	1.4%	35,329	$37,788,000	—	30 Sep 2021	13F
AQR CAPITAL MANAGEMENT LLC	13F	Company	1.3%	31,341	$33,523,000	—	30 Sep 2021	13F
THOMPSON SIEGEL & WALMSLEY LLC	13F	Company	1.2%	30,752	$32,893,000	—	30 Sep 2021	13F
Pendal Group Ltd	13F	Company	1.2%	29,421	$31,469,000	—	30 Sep 2021	13F
FIRST TRUST ADVISORS LP	13F	Company	1%	26,036	$27,848,000	—	30 Sep 2021	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	1%	25,529	$27,307,000	—	30 Sep 2021	13F
WELLS FARGO & COMPANY/MN	13F	Company	1%	25,256	$27,014,000	—	30 Sep 2021	13F
NORGES BANK	13F	Company	1%	25,044	$26,787,000	—	30 Sep 2021	13F
Mraz, Amerine & Associates, Inc.	13F	Company	0.92%	22,942	$24,539,000	—	30 Sep 2021	13F
ELKHORN PARTNERS LIMITED PARTNERSHIP	13F	Company	0.89%	22,086	$23,623,000	—	30 Sep 2021	13F
FEDERATED HERMES, INC.	13F	Company	0.88%	21,792	$23,309,000	—	30 Sep 2021	13F
NORTHERN TRUST CORP	13F	Company	0.87%	21,557	$23,057,000	—	30 Sep 2021	13F
Cove Street Capital, LLC	13F	Company	0.86%	21,437	$22,929,000	—	30 Sep 2021	13F
VICTORY CAPITAL MANAGEMENT INC	13F	Company	0.76%	18,808	$20,118,000	—	30 Sep 2021	13F
Robeco Institutional Asset Management B.V.	13F	Company	0.73%	18,112	$19,375,000	—	30 Sep 2021	13F
SPEECE THORSON CAPITAL GROUP INC	13F	Company	0.72%	17,879	$19,124,000	—	30 Sep 2021	13F
Nuveen Asset Management, LLC	13F	Company	0.6%	14,799	$15,866,000	—	30 Sep 2021	13F
Bank of New York Mellon Corp	13F	Company	0.51%	12,713	$13,599,000	—	30 Sep 2021	13F
PARAMETRIC PORTFOLIO ASSOCIATES LLC	13F	Company	0.5%	12,426	$13,291,000	—	30 Sep 2021	13F
RENAISSANCE TECHNOLOGIES LLC	13F	Company	0.5%	12,300	$13,156,000	—	30 Sep 2021	13F
MARTINGALE ASSET MANAGEMENT L P	13F	Company	0.4%	9,905	$10,595,000	—	30 Sep 2021	13F
EAGLE ASSET MANAGEMENT INC	13F	Company	0.37%	9,100	$9,733,000	—	30 Sep 2021	13F
GOLDMAN SACHS GROUP INC	13F	Company	0.36%	8,843	$9,459,000	—	30 Sep 2021	13F
CITADEL ADVISORS LLC	13F	Company	0.34%	8,426	$9,012,000	—	30 Sep 2021	13F
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	13F	Company	0.31%	7,572	$8,099,087	—	30 Sep 2021	13F
ENVESTNET ASSET MANAGEMENT INC	13F	Company	0.29%	7,209	$7,711,000	—	30 Sep 2021	13F
ROYCE & ASSOCIATES LP	13F	Company	0.28%	6,897	$7,377,000	—	30 Sep 2021	13F
CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM	13F	Company	0.28%	6,893	$7,373,000	—	30 Sep 2021	13F
Swiss National Bank	13F	Company	0.28%	6,846	$7,323,000	—	30 Sep 2021	13F
State of Alaska, Department of Revenue	13F	Company	0.26%	6,361	$6,803,000	—	30 Sep 2021	13F
Brandywine Global Investment Management, LLC	13F	Company	0.23%	5,770	$6,172,000	—	30 Sep 2021	13F
FENIMORE ASSET MANAGEMENT INC	13F	Company	0.23%	5,768	$6,170,000	—	30 Sep 2021	13F

Institutional Holders of WHITE MOUNTAINS INSURANCE GROUP LTD - COMMON (WTM) as of Q4 2021

As of 31 Dec 2021, WHITE MOUNTAINS INSURANCE GROUP LTD - COMMON (WTM) was held by 243 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 2,675,937 shares. The largest 10 holders included VANGUARD GROUP INC, WELLINGTON MANAGEMENT GROUP LLP, ATLANTA CAPITAL MANAGEMENT CO L L C, River Road Asset Management, LLC, DIMENSIONAL FUND ADVISORS LP, Boston Partners, FULLER & THALER ASSET MANAGEMENT, INC., BlackRock Inc., Artisan Partners Limited Partnership, and LONDON CO OF VIRGINIA. This page lists 243 institutional shareholders reporting positions in this security for the Q4 2021 filing period.

Investor	Option	Weight %	Change %	Value $	* Price	Shares	Share Change	Activity	Report Period

Compare Q4 2021 vs Q3 2021 Across Filers

Q3 2021 holders

230

Q4 2021 holders

243

Holder diff

Investor	Q3 2021 Shares	Q4 2021 Shares	Share Diff	Share Chg %	Q3 2021 Value $	Q4 2021 Value $	Value Diff $	Value Chg %

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

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend

* 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.