White Mountains Insurance Group Ltd

WTM

Exchange: NYSE
Industry: Fire, Marine & Casualty Insurance
SEC CIK: 0000776867

SEC filings (opens in a new tab)

No open-market purchases or sales by White Mountains Insurance Group Ltd insiders were filed in the last 90 days; 356 institutions reported holding it in 13F filings for Q2 2026, worth $4.57B in total; Southeastern Asset Management (Longleaf) is the only superinvestor holding it.

Q3 2023 vs. Q2 2023

How the institutions holding White Mountains Insurance Group Ltd changed between Q2 2023 and Q3 2023.

All holders in Q3 2023 All holders in Q2 2023

13F holders of WTM: Q2 2023 compared with Q3 2023
Measure	Q2 2023	Of which not filed for Q3 2023	Q3 2023	Change
Holders	258	2	272	+16
Shares	2.25M	310	2.27M	+24.0K (+1.1%)
Value	$3.13B	$430.6K	$3.40B	+$271.1M (+8.7%)

2 institutions that held it in Q2 2023 haven't filed for Q3 2023 yet. Not filing isn't selling, so the changes leave them out.

New holders (32)

Institutions that held White Mountains Insurance Group Ltd at the end of Q3 2023 but not at the end of Q2 2023.

Institutions new to WTM in Q3 2023
Institution	Shares	Value	% of portfolio
Select Equity Group, L.P.	17,702	$26.5M	0.11%
Vident Advisory, LLC	1,768	$2.64M	0.08%
ExodusPoint Capital Management, LP	1,067	$1.60M	0.02%
TD Asset Management Inc	940	$1.41M	0.00%
First Trust Advisors LP	867	$1.30M	0.00%
HRT Financial LP	536	$801.0K	0.01%
QRG Capital Management, Inc.	519	$776.3K	0.01%
Park Avenue Securities LLC	500	$748.0K	0.01%
Manufacturers Life Insurance Company, The	479	$716.4K	0.00%
Quantedge Capital Pte Ltd	400	$598.3K	0.33%
Susquehanna International Group, LLP	398	$595.3K	0.00%
Kathleen S. Wright Associates Inc.	380	$579.3K	0.32%
Pictet Asset Management Holding SA	300	$448.7K	0.00%
Oak Thistle LLC	257	$384.4K	0.11%
Pathstone Family Office, LLC	213	$318.6K	0.00%
Walleye Capital LLC	197	$294.7K	0.00%
Wealthstar Advisors, LLC	192	$287.2K	0.13%
Cetera Advisor Networks LLC	187	$279.7K	0.00%
Envestnet Portfolio Solutions, Inc.	181	$270.8K	0.00%
Wealth Enhancement Advisory Services, LLC	177	$264.8K	0.00%
National Asset Management, Inc.	166	$248.3K	0.01%
Schonfeld Strategic Advisors LLC	142	$212.4K	0.00%
New Potomac Partners, LLC	140	$209.4K	0.14%
Utah Retirement Systems	134	$200.4K	0.00%
Kapitalo Investimentos Ltda	92	$137.6K	0.02%
KBC Group NV	36	$54.0K	0.00%
GWM Advisors LLC	16	$23.9K	0.00%
Point72 Asset Management, L.P.	12	$18.5K	0.00%
Carmel Capital Partners, LLC	7	$10.5K	0.00%
NBC Securities, Inc.	7	$10.0K	0.00%
Steward Financial Group LLC	4	$5.00K	0.00%
Mitsubishi UFJ Kokusai Asset Management Co., Ltd.	2	$2.99K	0.00%

Sold out (16)

Institutions that held White Mountains Insurance Group Ltd at the end of Q2 2023 and filed for Q3 2023 without it.

Institutions that sold out of WTM in Q3 2023
Institution	Shares, Q2 2023	Value, Q2 2023
Teachers Retirement System of the State of Kentucky	2,083	$2.89M
DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main	393	$545.8K
Ellsworth Advisors, LLC	318	$442.0K
Dark Forest Capital Management LP	299	$415.3K
Two Sigma Investments, LP	256	$355.6K
XTX Topco Ltd	212	$294.4K
M&T Bank Corp	202	$280.6K
Assenagon Asset Management S.A.	181	$251.4K
CM Wealth Advisors LLC	149	$229.1K
Y-Intercept (Hong Kong) Ltd	145	$201.4K
SG Americas Securities, LLC	115	$160.0K
Point72 Middle East FZE	89	$123.6K
Harbor Capital Advisors, Inc.	65	$90.3K
O'Dell Group, LLC	7	$9.77K
Exchange Traded Concepts, LLC	6	$8.33K
Clearview Wealth Advisors LLC	1	$1.39K

Not filed for Q3 2023 yet (2)

Institutions that held White Mountains Insurance Group Ltd at the end of Q2 2023 and haven't filed a 13F for Q3 2023. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding WTM in Q2 2023 that haven't filed for Q3 2023
Institution	Shares, Q2 2023	Value, Q2 2023
Pictet Asset Management SA	300	$416.7K
First Capital Advisors Group, LLC.	10	$13.9K