White Mountains Insurance Group, Ltd. Major Shareholders & Ownership History
| Major Shareholder Name | Reporting Date | Shares Held | Market Value | Change in Shares | Ownership |
|---|---|---|---|---|---|
| DIMENSIONAL FUND ADVISORS LP | 08/11/2026 | 158.95 K | $329.58 M | 1.49% | 6.60% |
| NEUBERGER BERMAN GROUP LLC | 08/13/2026 | 119.14 K | $247.03 M | -4.47% | 4.95% |
| BLACKROCK, INC. | 08/07/2026 | 117.87 K | $244.39 M | 4.01% | 4.90% |
| RIVER ROAD ASSET MANAGEMENT, LLC | 07/17/2026 | 115.88 K | $240.26 M | -3.85% | 4.81% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 08/13/2026 | 111.97 K | $232.16 M | -3.10% | 4.65% |
| VANGUARD CAPITAL MANAGEMENT LLC | 08/13/2026 | 107.48 K | $222.85 M | -1.54% | 4.46% |
| FULLER & THALER ASSET MANAGEMENT, INC. | 08/12/2026 | 101.89 K | $211.26 M | -2.55% | 4.23% |
| COOKE & BIELER LP | 07/30/2026 | 85.12 K | $176.49 M | -18.82% | 3.54% |
| WALLACE CAPITAL MANAGEMENT INC. | 08/14/2026 | 80.07 K | $166.01 M | 1.61% | 3.33% |
| FIDUCIARY MANAGEMENT INC /WI/ | 08/13/2026 | 66.55 K | $137.98 M | -21.77% | 2.76% |
| GENDELL JEFFREY L | 08/14/2026 | 59.24 K | $122.83 M | 56.67% | 2.46% |
| BOSTON PARTNERS | 08/04/2026 | 55.57 K | $115.28 M | -3.29% | 2.31% |
| LONDON CO OF VIRGINIA | 08/14/2026 | 54.03 K | $112.08 M | -5.44% | 2.24% |
| STATE STREET CORP | 08/07/2026 | 50.26 K | $104.20 M | 2.24% | 2.09% |
| GEODE CAPITAL MANAGEMENT, LLC | 08/12/2026 | 49.41 K | $102.47 M | 17.32% | 2.05% |
| MORGAN STANLEY | 08/13/2026 | 46.87 K | $97.18 M | -20.96% | 1.95% |
| REINHART PARTNERS, INC. | 07/08/2026 | 44.48 K | $92.27 M | 19.01% | 1.85% |
| T. ROWE PRICE INVESTMENT MANAGEMENT, INC. | 08/14/2026 | 34.24 K | $70.99 M | -17.53% | 1.42% |
| LORD, ABBETT & CO. LLC | 08/14/2026 | 32.83 K | $68.07 M | -0.85% | 1.36% |
| AMERICAN CENTURY COMPANIES INC | 08/12/2026 | 31.11 K | $64.50 M | 274.43% | 1.29% |
| NORGES BANK | 08/12/2026 | 27.96 K | $57.96 M | 100.00% | 1.16% |
| SPEARS ABACUS ADVISORS LLC | 08/11/2026 | 27.58 K | $57.18 M | -1.61% | 1.15% |
| BANK OF AMERICA CORP /DE/ | 08/14/2026 | 25.03 K | $51.89 M | -11.74% | 1.04% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 08/14/2026 | 23.51 K | $48.74 M | -3.04% | 0.98% |
| SIXTH STREET PARTNERS MANAGEMENT COMPANY, L.P. | 08/14/2026 | 23.51 K | $48.74 M | 100.00% | 0.98% |
| MRAZ, AMERINE & ASSOCIATES, INC. | 07/16/2026 | 22.22 K | $46.07 M | 0.18% | 0.92% |
| ALLSPRING GLOBAL INVESTMENTS HOLDINGS, LLC | 08/13/2026 | 18.12 K | $37.39 M | -2.66% | 0.75% |
| GOTHAM ASSET MANAGEMENT, LLC | 08/14/2026 | 17.94 K | $37.20 M | 98.30% | 0.75% |
| BROWN ADVISORY INC | 08/14/2026 | 17.72 K | $36.75 M | -0.68% | 0.74% |
| JANE STREET GROUP, LLC | 08/14/2026 | 17.23 K | $35.72 M | 24.75% | 0.72% |
| SOUTHEASTERN ASSET MANAGEMENT INC/TN/ | 08/14/2026 | 17.10 K | $35.46 M | -9.33% | 0.71% |
| UBS GROUP AG | 08/13/2026 | 16.20 K | $33.58 M | 55.14% | 0.67% |
| VANGUARD FIDUCIARY TRUST CO | 08/13/2026 | 15.32 K | $31.76 M | 0.88% | 0.64% |
| RAYMOND JAMES FINANCIAL INC | 08/14/2026 | 14.83 K | $30.75 M | -38.07% | 0.62% |
| NORTHERN TRUST CORP | 08/13/2026 | 14.57 K | $30.21 M | -5.96% | 0.61% |
| WELLINGTON MANAGEMENT GROUP LLP | 08/14/2026 | 14.53 K | $30.13 M | -2.37% | 0.60% |
| ENVESTNET ASSET MANAGEMENT INC | 08/03/2026 | 13.84 K | $28.69 M | -11.08% | 0.57% |
| QUANTINNO CAPITAL MANAGEMENT LP | 08/13/2026 | 12.62 K | $26.17 M | 29.03% | 0.52% |
| ELKHORN PARTNERS LIMITED PARTNERSHIP | 08/13/2026 | 12.32 K | $25.54 M | -2.99% | 0.51% |
| HORIZON KINETICS ASSET MANAGEMENT LLC | 08/11/2026 | 12.21 K | $25.31 M | -6.91% | 0.51% |
| GOLDMAN SACHS GROUP INC | 08/14/2026 | 12.15 K | $25.19 M | -23.01% | 0.50% |
| BOUSSARD & GAVAUDAN GESTION SAS | 08/19/2026 | 11.68 K | $24.46 M | 100.00% | 0.49% |
| VICTORY CAPITAL MANAGEMENT INC | 08/07/2026 | 10.68 K | $22.15 M | -4.14% | 0.44% |
| FIRST TRUST ADVISORS LP | 08/11/2026 | 10.60 K | $21.99 M | 246.76% | 0.44% |
| QUBE RESEARCH & TECHNOLOGIES LTD | 08/14/2026 | 9.67 K | $20.06 M | 852.07% | 0.40% |
| SPEECE THORSON CAPITAL GROUP INC | 08/04/2026 | 9.22 K | $19.11 M | -1.94% | 0.38% |
| WELLS FARGO & COMPANY/MN | 08/14/2026 | 8.71 K | $18.06 M | -0.82% | 0.36% |
| BANK OF NEW YORK MELLON CORP | 08/06/2026 | 8.41 K | $17.44 M | -0.38% | 0.35% |
| SEI INVESTMENTS CO | 08/14/2026 | 8.11 K | $16.81 M | -26.94% | 0.34% |
| GW&K INVESTMENT MANAGEMENT, LLC | 08/12/2026 | 7.84 K | $16.25 M | -1.10% | 0.33% |
Explore Related Stocks for Market Trends
Explore our related stocks for the latest market trends and stock news to stay informed and make better decisions.
White Mountains Insurance Group, Ltd. institutional Ownership - FAQ's
During the previous two years, 544 institutional investors and hedge funds held shares of White Mountains Insurance Group, Ltd.. The most heavily invested institutionals were:
DIMENSIONAL FUND ADVISORS LP: 158,954
Neuberger Berman Group LLC: 119,141
BlackRock, Inc.: 117,871
River Road Asset Management, LLC: 115,880
VANGUARD PORTFOLIO MANAGEMENT LLC: 111,969
VANGUARD CAPITAL MANAGEMENT LLC: 107,479
92.47% of White Mountains Insurance Group, Ltd. stock is owned by institutional investors.
Institutional investors have bought a total of 3.35 M shares in the last 24 months. This purchase volume represents approximately $7.18 B in transactions.