Who owns WHITE MOUNTAINS INSURANCE GROUP LTD (WTM)? Elite investor 13F holders
3 tracked elite investors reported holding WHITE MOUNTAINS INSURANCE GROUP LTD as of 2026-06-30, including Southeastern Asset Management, Gotham Asset Management, D.E. Shaw. Who bought, trimmed or exited each quarter, with links to the original SEC 13F filings.
3 tracked investors currently reported holding · Latest report period: 2026-06-30 · Financials · Insurance
White Mountains Insurance Group, Ltd. provides insurance services in the United States, the United Kingdom, Bermuda, and internationally. It operates through Ark/WM Outrigger, HG Global, Kudu, Distinguished, and Other Operations segments. The company offers property insurance and reinsurance; specialty insurance and reinsurance consisting of aviation, contingency, cyber, fine art and specie,…
Reported holders and securities, including exits (up to 20)
| Investor | Security | Instrument | Report period | Filed | Value | Quantity | Units | Change | Source |
|---|---|---|---|---|---|---|---|---|---|
| Southeastern Asset Management | WHITE MTNS INS GROUP LTD | SHARE | 2026-06-30 | 2026-08-14 00:00:00 | 35463263.00 USD | 17104.000000 | Shares | reduce | Original filing |
| Gotham Asset Management | WHITE MTNS INS GROUP LTD | SHARE | 2026-06-30 | 2026-08-14 00:00:00 | 37196617.00 USD | 17940.000000 | Shares | add | Original filing |
| D.E. Shaw | WHITE MTNS INS GROUP LTD | SHARE | 2026-06-30 | 2026-08-14 00:00:00 | 13721695.00 USD | 6618.000000 | Shares | reduce | Original filing |
| Renaissance Technologies LLC | WHITE MTNS INS GROUP LTD | SHARE | 2026-06-30 | 2026-08-13 00:00:00 | 0.00 USD | 0.000000 | Shares | exited | Original filing |
| Bridgewater Associates | WHITE MTNS INS GROUP LTD | SHARE | 2026-06-30 | 2026-08-14 00:00:00 | 0.00 USD | 0.000000 | Shares | exited | Original filing |
| Ancora Advisors / Ancora Holdings | WHITE MTNS INS GROUP LTD | SHARE | 2026-06-30 | 2026-08-14 00:00:00 | 0.00 USD | 0.000000 | Shares | exited | Original filing |
Public disclosures can be delayed, incomplete, or amended. Report period describes a position date; transaction date describes a reported transaction; filed describes submission. A recent filing or page update does not establish a current holding. A dash means unavailable or not comparable, not zero.
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