White Mountains Insurance Group Ltd
WTM- Exchange
- NYSE
- Industry
- Fire, Marine & Casualty Insurance
- SEC CIK
- 0000776867
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 2021 vs. Q2 2021
How the institutions holding White Mountains Insurance Group Ltd changed between Q2 2021 and Q3 2021.
All holders in Q3 2021All holders in Q2 2021
| Measure | Q2 2021 | Of which not filed for Q3 2021 | Q3 2021 | Change |
|---|---|---|---|---|
| Holders | 233 | 3 | 232 | +2 |
| Shares | 2.71M | 5.15K | 2.67M | −35.7K (−1.3%) |
| Value | $3.11B | $5.92M | $2.86B | −$250.0M (−8.0%) |
3 institutions that held it in Q2 2021 haven't filed for Q3 2021 yet. Not filing isn't selling, so the changes leave them out.
New holders (23)
Institutions that held White Mountains Insurance Group Ltd at the end of Q3 2021 but not at the end of Q2 2021.
| Institution | Shares | Value | % of portfolio |
|---|---|---|---|
| Pendal Group Limited | 29,421 | $31.5M | 0.26% |
| Royce & Associates LP | 6,897 | $7.38M | 0.06% |
| Franklin Resources Inc | 2,270 | $2.43M | 0.00% |
| HRT Financial LP | 1,369 | $1.46M | 0.01% |
| Dean Investment Associates, LLC | 1,192 | $1.27M | 0.24% |
| Dean Capital Management | 773 | $827.0K | 0.76% |
| HighTower Advisors, LLC | 350 | $370.0K | 0.00% |
| Marshall Wace North America L.P. | 326 | $349.0K | 0.00% |
| Janus Henderson Group PLC | 312 | $334.0K | 0.00% |
| Chapman Investment Management, LLC | 300 | $321.0K | 0.17% |
| Bokf, NA | 297 | $318.0K | 0.01% |
| Pictet Asset Management SA | 240 | $257.0K | 0.00% |
| Point72 Hong Kong Ltd | 215 | $230.0K | 0.02% |
| Raymond James Financial Services Advisors, Inc. | 212 | $227.0K | 0.00% |
| Connable Office Inc | 211 | $226.0K | 0.03% |
| Glenview Trust Co | 193 | $207.0K | 0.01% |
| Strategic Asset Management, LLC | 28 | $31.0K | 0.04% |
| Cahill Financial Advisors Inc | 20 | $21.0K | 0.00% |
| Federation des caisses Desjardins du Quebec | 11 | $11.8K | 0.00% |
| Loomis Sayles & Co L P | 9 | $10.0K | 0.00% |
| O'Dell Group, LLC | 7 | $8.00K | 0.00% |
| Bell Investment Advisors, Inc | 5 | $5.00K | 0.00% |
| Meridian Wealth Partners, LLC | 2 | $2.00K | 0.00% |
Sold out (21)
Institutions that held White Mountains Insurance Group Ltd at the end of Q2 2021 and filed for Q3 2021 without it.
| Institution | Shares, Q2 2021 | Value, Q2 2021 |
|---|---|---|
| Madison Avenue Partners, LP | 20,745 | $23.8M |
| Balyasny Asset Management LLC | 4,394 | $5.04M |
| Brandes Investment Partners, LP | 681 | $782.0K |
| AXA S.A. | 600 | $689.0K |
| HSBC Holdings PLC | 491 | $564.0K |
| Paloma Partners Management Co | 450 | $516.0K |
| Tudor Investment Corp Et Al | 420 | $482.0K |
| Verition Fund Management LLC | 314 | $360.0K |
| Assenagon Asset Management S.A. | 243 | $279.0K |
| Gsa Capital Partners LLP | 212 | $243.0K |
| Security National Bank of So Dak | 200 | $230.0K |
| Summit Global Investments | 200 | $230.0K |
| Ergoteles LLC | 192 | $220.0K |
| Pitcairn Co | 188 | $216.0K |
| Prudential Financial Inc | 184 | $212.0K |
| Raymond James Trust N.A. | 183 | $210.0K |
| Investment Management of Virginia LLC | 181 | $208.0K |
| SG Americas Securities, LLC | 124 | $142.0K |
| NEXT Financial Group, Inc | 26 | $30.0K |
| Advisory Services Network, LLC | 16 | $18.0K |
| Whittier Trust Co | 8 | $9.00K |
Not filed for Q3 2021 yet (3)
Institutions that held White Mountains Insurance Group Ltd at the end of Q2 2021 and haven't filed a 13F for Q3 2021. Not filing isn't selling, so they aren't counted as sold out.
| Institution | Shares, Q2 2021 | Value, Q2 2021 |
|---|---|---|
| QS Investors, LLC | 4,947 | $5.68M |
| Pictet Asset Management Ltd | 200 | $230.0K |
| CWM, LLC | 7 | $8.00K |