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.

Q2 2022 vs. Q1 2022

How the institutions holding White Mountains Insurance Group Ltd changed between Q1 2022 and Q2 2022.

All holders in Q2 2022 All holders in Q1 2022

13F holders of WTM: Q1 2022 compared with Q2 2022
Measure	Q1 2022	Of which not filed for Q2 2022	Q2 2022	Change
Holders	244	3	259	+18
Shares	2.69M	16.5K	2.66M	−16.4K (−0.6%)
Value	$3.09B	$18.7M	$3.32B	+$246.7M (+8.0%)

3 institutions that held it in Q1 2022 haven't filed for Q2 2022 yet. Not filing isn't selling, so the changes leave them out.

New holders (30)

Institutions that held White Mountains Insurance Group Ltd at the end of Q2 2022 but not at the end of Q1 2022.

Institutions new to WTM in Q2 2022
Institution	Shares	Value	% of portfolio
Alaska Permanent Fund Corp	3,240	$4.04M	0.06%
Quadrature Capital Ltd	1,449	$1.81M	0.08%
Main Street Financial Solutions, LLC	1,019	$1.29M	0.17%
Brookfield Asset Management Inc.	860	$1.07M	0.00%
Intech Investment Management LLC	614	$765.0K	0.00%
Schonfeld Strategic Advisors LLC	500	$623.0K	0.01%
Gsa Capital Partners LLP	494	$616.0K	0.09%
Quantinno Capital Management LP	469	$584.0K	0.08%
Squarepoint Ops LLC	341	$425.0K	0.00%
Dodge & Cox	300	$374.0K	0.00%
ETF Managers Group, LLC	282	$347.0K	0.01%
Virtu Financial LLC	268	$334.0K	0.03%
Boston Private Wealth LLC	247	$307.0K	0.00%
Park Avenue Securities LLC	243	$303.0K	0.01%
Centiva Capital, LP	237	$295.0K	0.02%
Athena Investment Management	227	$283.0K	0.22%
Y-Intercept (Hong Kong) Ltd	203	$253.0K	0.03%
Algert Global LLC	175	$218.0K	0.02%
Verition Fund Management LLC	175	$218.0K	0.00%
Ronald Blue Trust, Inc.	41	$47.0K	0.00%
First Horizon Advisors, Inc.	25	$30.0K	0.00%
Quadrant Capital Group LLC	16	$20.0K	0.00%
Total Clarity Wealth Management, Inc.	10	$12.0K	0.01%
Bell Investment Advisors, Inc	8	$10.0K	0.00%
Private Trust Co NA	6	$7.00K	0.00%
Loomis Sayles & Co L P	3	$4.00K	0.00%
TCI Wealth Advisors, Inc.	3	$4.00K	0.00%
Steward Financial Group LLC	2	$2.00K	0.00%
Morton Brown Family Wealth, LLC	2	$2.00K	0.00%
Fieldpoint Private Securities, LLC	1	$1.00K	0.00%

Sold out (12)

Institutions that held White Mountains Insurance Group Ltd at the end of Q1 2022 and filed for Q2 2022 without it.

Institutions that sold out of WTM in Q2 2022
Institution	Shares, Q1 2022	Value, Q1 2022
ExodusPoint Capital Management, LP	4,699	$5.34M
Fenimore Asset Management Inc	3,661	$4.16M
HRT Financial LP	2,135	$2.42M
Natixis	2,086	$2.37M
Mitsubishi UFJ Trust & Banking Corp	1,295	$1.47M
Nuance Investments, LLC	360	$409.0K
KBC Group NV	201	$228.0K
Regions Financial Corp	189	$215.0K
Quantbot Technologies LP	62	$70.0K
Benjamin F. Edwards & Company, Inc.	9	$10.0K
Cordant, Inc.	1	$1.00K
CFS Investment Advisory Services, LLC	13,635	$0

Not filed for Q2 2022 yet (3)

Institutions that held White Mountains Insurance Group Ltd at the end of Q1 2022 and haven't filed a 13F for Q2 2022. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding WTM in Q1 2022 that haven't filed for Q2 2022
Institution	Shares, Q1 2022	Value, Q1 2022
Parametric Portfolio Associates LLC	12,513	$14.2M
Teachers Retirement System of the State of Kentucky	3,345	$3.80M
Amalgamated Financial Corp.	605	$687.0K