WHITE MOUNTAINS INSURANCE GROUP LTD
All 13F Filings
- Location
- Hanover, NH
- Most recent 13F
- Q2 2026
- Holdings value ($000)
- 393,601
- Description
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- Website
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- Founded
- —
- Chairman
- —
- CEO
- —
- All SEC filings
- View on sec.gov
Sector allocation over time (stocks only)
Stacked by quarter. Hover to see detailed sector breakdown for any quarter.
| Quarter | Date Filed | Holdings | Value ($000) | Form Type | Name |
|---|---|---|---|---|---|
| Q2 2026 | 8/12/2026 | 2 | 393,601 | 13F-HR | WHITE MOUNTAINS INSURANCE GROUP LTD |
| Q1 2026 | 5/12/2026 | 2 | 313,369 | 13F-HR | WHITE MOUNTAINS INSURANCE GROUP LTD |
| Q4 2025 | 2/12/2026 | 2 | 261,930 | 13F-HR | WHITE MOUNTAINS INSURANCE GROUP LTD |
| Q3 2025 | 11/13/2025 | 1 | 203,208 | 13F-HR | WHITE MOUNTAINS INSURANCE GROUP LTD |
| Q2 2025 | 8/11/2025 | 1 | 195,530 | 13F-HR | WHITE MOUNTAINS INSURANCE GROUP LTD |
| Q2 2014 | 8/8/2014 | 1 | 455,912 | 13F-HR | WHITE MOUNTAINS INSURANCE GROUP LTD |
| Q1 2014 | 5/12/2014 | 2 | 397,894 | 13F-HR | WHITE MOUNTAINS INSURANCE GROUP LTD |
| Q4 2013 | 2/13/2014 | 2 | 380,659 | 13F-HR | WHITE MOUNTAINS INSURANCE GROUP LTD |
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Money flow by instrument (QoQ, ex-options)
| Type | Value ($000) | Share % | Inflow | Outflow | Net |
|---|---|---|---|---|---|
| Stocks | 224.5 K | 57.0% | 58.39 K | 0 | 58.39 K |
| ETFs | 169.1 K | 43.0% | 21.84 K | 0 | 21.84 K |
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Fund Snapshot
Q2 2026
Latest filed
8/12/2026
Total value ($000)
393,601
Holdings
2
QoQ value change ($000)
80,232
(25.6%)
Value = total reported 13F value ($000), Holdings = number of positions.
13F Value over time
Holdings count over time
Sector allocation (latest, stocks only)
Methodology:
sector allocation is stocks-only;
instrument flow table is ex-options;
options exposure is shown separately.
Details.