White Mountains Insurance Group, Ltd. WTM
2,241.12 USD -53.04 (-2.31%)
At closeNov 6, 2026, 4:24 PM EST
2,248.99 +7.87 +0.35%
After hours · Nov 6, 4:24 PM ET
2,230.00 Day range 2,285.60
1,870.00 52-week range 2,378.94
- YTD
- +7.85%
- 1 year
- +18.45%
Ownership
Held by insiders 3.22%
Held by institutions 96.98%
Float held by institutions 100.22%
Institutions 479
Top institutional holders
| Holder | % held | Shares | Value | Reported |
|---|---|---|---|---|
| Dimensional Fund Advisors LP | 6.73% | 160,597 | 360.88M | Sep 29, 2026 |
| Neuberger Berman Group, LLC | 4.99% | 119,141 | 267.72M | Jun 29, 2026 |
| Blackrock Inc. | 4.94% | 117,871 | 264.87M | Jun 29, 2026 |
| River Road Asset Management, LLC | 4.86% | 115,880 | 260.39M | Jun 29, 2026 |
| Vanguard Portfolio Management LLC | 4.69% | 111,969 | 251.60M | Jun 29, 2026 |
| Vanguard Capital Management LLC | 4.50% | 107,479 | 241.51M | Jun 29, 2026 |
Top mutual fund holders
| Holder | % held | Shares | Value | Reported |
|---|---|---|---|---|
| UNDISCOVERED MANAGERS Fd.S-Undiscovered Managers Behavioral Value Fd. | 3.46% | 82,474 | 185.33M | Jun 29, 2026 |
| VANGUARD INDEX FUNDS-Vanguard Total Stock Market Index Fund | 3.13% | 74,657 | 167.76M | Jun 29, 2026 |
| NEUBERGER BERMAN EQUITY FUNDS-Neuberger Genesis Fund | 2.88% | 68,664 | 154.29M | Sep 29, 2026 |
| VANGUARD INDEX FUNDS-Vanguard Small-Cap Index Fund | 2.26% | 53,965 | 121.26M | Jun 29, 2026 |
| VANGUARD WHITEHALL FUNDS-Vanguard Selected Value Fund | 1.46% | 34,926 | 78.48M | Jul 30, 2026 |
| American Century ETF Trust-Avantis U.S. Small Cap Value ETF | 1.46% | 34,946 | 78.53M | Sep 29, 2026 |
Insiders
| Insider | Relation | Latest transaction | Date | Shares held |
|---|---|---|---|---|
| CAFFREY LIAM P | Chief Executive Officer | Stock Award(Grant) | Feb 24, 2026 | 5,313 |
| CAMPBELL REID TARLTON | Director | Stock Award(Grant) | May 20, 2026 | 10,694 |
| CHOKSI MARY C | Director | Stock Award(Grant) | May 20, 2026 | 1,993 |
| HARRISON GILES E. | President | Stock Award(Grant) | Feb 24, 2026 | 2,677 |
| HICKS WESTON M | Director | Stock Award(Grant) | May 20, 2026 | 2,936 |
| HILDRETH MICHAELA | Officer | Stock Award(Grant) | Feb 24, 2026 | 4,336 |