Companies / White Mountains Insurance Group Ltd / Activity
Activity — White Mountains Insurance Group Ltd
109 moves.
Top impactInsider · CEO movesInsider · biggest buysInsider · biggest sellsInstitution · biggest movesInstitution · new positions
| Date | Actor | Action | Security | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|---|
| Q4 2025 as of | Elevation Point Wealth Partners, LLC 13F manager | Add | Common stock | $305.5K | +147 +193.42% | 223 <0.01% of shares | low |
| Q1 2026 as of | AllianceBernstein L.P. 13F manager | Add | Common stock | $303.4K | +146 +18.09% | 953 0.04% of shares | low |
| Q1 2026 as of | Weiss Asset Management LP 13F manager | New | Common stock | $263.6K | +120 | 120 <0.01% of shares | low |
| Q1 2026 as of | Royal Bank of Canada 13F manager | Add | Common stock | $215.4K | +98 +8.93% | 1,195 0.05% of shares | low |
| Q1 2026 as of | Private Management Group Inc 13F manager | Add | Common stock | $213.1K | +97 +13.36% | 823 0.03% of shares | low |
| Q2 2025 as of | Barclays PLC 13F manager | Add | Common stock | $158.0K | +88 +2.67% | 3,383 0.14% of shares | low |
| Q1 2026 as of | TD Asset Management Inc 13F manager | Trim | Common stock | $-149.4K | -68 -6.80% | 932 0.04% of shares | low |
| Q1 2026 as of | Leuthold Group, LLC 13F manager | Trim | Common stock | $-142.8K | -65 -5.82% | 1,052 0.04% of shares | low |
| Q1 2026 as of | Sterling Capital Management LLC 13F manager | Trim | Common stock | $-138.4K | -63 -43.15% | 83 <0.01% of shares | low |
| Q2 2025 as of | Elevation Point Wealth Partners, LLC 13F manager | New | Common stock | $136.5K | +76 | 76 <0.01% of shares | low |
| Q1 2026 as of | Evergreen Capital Management LLC 13F manager | Add | Common stock | $129.6K | +59 +41.26% | 202 <0.01% of shares | low |
| Q2 2026 as of | The PNC Financial Services Group, Inc. 13F manager | Trim | Common stock | $-112.0K | -54 -10.07% | 482 0.02% of shares | low |
| Q2 2026 as of | Arizona State Retirement System 13F manager | Trim | Common stock | $-112.0K | -54 -7.52% | 664 0.03% of shares | low |
| Q3 2025 as of | Sanctuary Advisors, LLC 13F manager | Add | Common stock | $108.7K | +65 +15.12% | 495 0.02% of shares | low |
| Q1 2024 as of | Barclays PLC 13F manager | Trim | Common stock | $-105.9K | -59 -5.53% | 1,007 0.04% of shares | low |
| Q1 2026 as of | &Partners 13F manager | Trim | Common stock | $-87.9K | -40 -6.27% | 598 0.03% of shares | low |
| Q2 2025 as of | Savant Capital, LLC 13F manager | Add | Common stock | $77.2K | +43 +29.86% | 187 <0.01% of shares | low |
| Q1 2026 as of | Brandes Investment Partners, LP 13F manager | Add | Common stock | $72.5K | +33 +4.96% | 698 0.03% of shares | low |
| Q1 2026 as of | Rhumbline Advisers 13F manager | Trim | Common stock | $-72.5K | -33 -0.79% | 4,132 0.17% of shares | low |
| Q1 2026 as of | Northwestern Mutual Wealth Management Co 13F manager | Add | Common stock | $68.1K | +31 +344.44% | 40 <0.01% of shares | low |
| Q4 2023 as of | Barclays PLC 13F manager | Trim | Common stock | $-57.2K | -38 -3.44% | 1,066 0.04% of shares | low |
| Q1 2023 as of | Barclays PLC 13F manager | Trim | Common stock | $-56.5K | -41 -5.38% | 721 0.03% of shares | low |
| Q1 2026 as of | Public Employees Retirement System of Ohio 13F manager | Trim | Common stock | $-54.9K | -25 -3.22% | 751 0.03% of shares | low |
| Q1 2026 as of | AMG National Trust Bank 13F manager | Trim | Common stock | $-52.7K | -24 -4.03% | 571 0.02% of shares | low |
| Q1 2026 as of | MAI Capital Management 13F manager | Add | Common stock | $48.3K | +22 +37.29% | 81 <0.01% of shares | low |
| Q1 2026 as of | Oppenheimer Asset Management Inc. 13F manager | Trim | Common stock | $-48.3K | -22 -1.46% | 1,480 0.06% of shares | low |
| Q4 2025 as of | Sanctuary Advisors, LLC 13F manager | Trim | Common stock | $-41.6K | -20 -4.04% | 475 0.02% of shares | low |
| Q4 2025 as of | Danske Bank A/S 13F manager | New | Common stock | $41.6K | +20 | 20 <0.01% of shares | low |
| Q2 2026 as of | Quent Capital, LLC 13F manager | Trim | Common stock | $-39.4K | -19 -31.67% | 41 <0.01% of shares | low |
| Q1 2026 as of | Parsons Capital Management INC/RI 13F manager | Add | Common stock | $35.2K | +16 +0.85% | 1,888 0.08% of shares | low |
| Q3 2023 as of | Barclays PLC 13F manager | Add | Common stock | $34.4K | +23 +2.13% | 1,104 0.05% of shares | low |
| Q1 2026 as of | Keybank National ASSOCIATION/OH 13F manager | Trim | Common stock | $-33.0K | -15 -8.52% | 161 <0.01% of shares | low |
| Q2 2026 as of | Equity Investment Corp 13F manager | Trim | Common stock | $-29.0K | -14 -12.39% | 99 <0.01% of shares | low |
| Q1 2026 as of | Horizon Kinetics Asset Management LLC 13F manager | Trim | Common stock | $-19.8K | -9 -0.07% | 13,112 0.55% of shares | low |
| Q1 2026 as of | Hillsdale Investment Management Inc. 13F manager | New | Common stock | $17.6K | +8 | 8 <0.01% of shares | low |
| Q2 2026 as of | Perigon Wealth Management, LLC 13F manager | Add | Common stock | $16.6K | +8 +7.84% | 110 <0.01% of shares | low |
| Q1 2026 as of | Voya Investment Management LLC 13F manager | Trim | Common stock | $-13.2K | -6 -2.47% | 237 <0.01% of shares | low |
| Q4 2025 as of | Cresset Asset Management, LLC 13F manager | Trim | Common stock | $-10.4K | -5 -1.76% | 279 0.01% of shares | low |
| Q1 2026 as of | Ballentine Partners, LLC 13F manager | Trim | Common stock | $-8.8K | -4 -3.81% | 101 <0.01% of shares | low |
| Q3 2025 as of | Savant Capital, LLC 13F manager | Trim | Common stock | $-6.7K | -4 -2.14% | 183 <0.01% of shares | low |
| Q4 2025 as of | Mv Capital Management, Inc. 13F manager | Add | Common stock | $6.2K | +3 +300.00% | 4 <0.01% of shares | low |
| Q4 2025 as of | Savant Capital, LLC 13F manager | Trim | Common stock | $-6.2K | -3 -1.64% | 180 <0.01% of shares | low |
| Q1 2026 as of | Thompson Siegel & Walmsley LLC 13F manager | Trim | Common stock | $-3.8K | -2K -19.24% | 7,209 0.30% of shares | low |
| Q3 2025 as of | Cresset Asset Management, LLC 13F manager | Add | Common stock | $3.3K | +2 +0.71% | 284 0.01% of shares | low |
| Q1 2026 as of | Marquette Asset Management, LLC 13F manager | Add | Common stock | $2.2K | +1 +50.00% | 3 <0.01% of shares | low |
| Q1 2026 as of | Principal Securities, Inc. 13F manager | Trim | Common stock | $-2.2K | -1 -0.46% | 215 <0.01% of shares | low |
| Q1 2026 as of | Private Trust Co NA 13F manager | Trim | Common stock | $-2.2K | -1 -6.67% | 14 <0.01% of shares | low |
| Q4 2025 as of | Kilter Group LLC 13F manager | Trim | Common stock | $-2.1K | -1 -50.00% | 1 <0.01% of shares | low |
| Q2 2026 as of | CVA Family Office, LLC 13F manager | New | Common stock | $2.1K | +1 | 1 <0.01% of shares | low |
| Q1 2026 as of | GW&K Investment Management, LLC 13F manager | Trim | Common stock | $-1.5K | -695 -8.06% | 7,926 0.33% of shares | low |