13F

Stock

White Mtns Ins Group Ltd

Ticker not mapped · held by 364 managers

Reported value

$4.61B

Holders

364

+43 new · −26 exited

Holders’ est. mark

$207.6M

Price effect on 223 books still in the name

Largest holder

$344.1M

DIMENSIONAL FUND ADVISORS LP

Notable conviction

Share of each notable manager’s 13F book.

Holder count by quarter

Who holds it

Notable only
InvestorSharesValueEst. markChange
DIMENSIONAL FUND ADVISORS LP156.6K$344.1M$18.6MAdded$18.7M
NEUBERGER BERMAN GROUP LLC124.7K$274M$14.8MAdded$4.57M
River Road Asset Management, LLC120.5K$264.8M$14.3MAdded$13.6M
VANGUARD PORTFOLIO MANAGEMENT LLC115.6K$253.9MHeld
BlackRock, Inc.113.3K$249M$13.4MAdded$15.6M
VANGUARD CAPITAL MANAGEMENT LLC109.2K$239.8MHeld
COOKE & BIELER LP104.9K$230.4M$12.5MAdded$8.89M
FULLER & THALER ASSET MANAGEMENT, INC.104.6K$229.7M$12.4MAdded$4.93M
FIDUCIARY MANAGEMENT INC /WI/85.1K$186.9M$10.1MCut−$828.1K
Wallace Capital Management Inc.78.8K$173.1M$9.37MAdded$6.15M
MORGAN STANLEY59.3K$130.3M$7.05MCut−$40.4M
Boston Partners57.5K$126.2M$6.89MCut−$33.5M
LONDON CO OF VIRGINIA57.1K$125.5M$6.8MAdded$3.54M
State Street49.2K$108M$5.85MAdded$2.72M
GEODE CAPITAL MANAGEMENT, LLC42.1K$92.6M$4.94MAdded$6.26M
GENDELL JEFFREY L37.8K$83.1M$3.87MAdded$15.5M
REINHART PARTNERS, LLC.37.4K$82.1M$4.45MCut−$9.27M
BANK OF AMERICA CORP /DE/28.4K$62.3M$3.37MAdded$2.44M
Cannell & Spears LLC28K$61.6M$3.33MAdded$3.15M
CHARLES SCHWAB INVESTMENT MANAGEMENT INC24.2K$53.3M$2.76MAdded$4.97M
RAYMOND JAMES FINANCIAL INC24K$52.6M$2.85MAdded$2.81M
Mraz, Amerine & Associates, Inc.22.2K$48.7M$2.64MAdded$1.7M
SOUTHEASTERN ASSET MANAGEMENT INC/TN/18.9K$41.4M$2.24MCut−$24.3M
Allspring Global Investments Holdings, LLC18.6K$40.5M$2.54MCut−$687K
BROWN ADVISORY INC17.8K$39.2M$2.12MCut−$188.1K
GOLDMAN SACHS GROUP INC15.8K$34.7M$625.5KAdded$23.7M
ENVESTNET ASSET MANAGEMENT INC15.6K$34.2M$1.85MAdded$1.36M
NORTHERN TRUST CORP15.5K$34M$1.84MCut−$592.6K
VANGUARD FIDUCIARY TRUST CO15.2K$33.4MHeld
WELLINGTON MANAGEMENT GROUP LLP14.9K$32.7M$1.77MCut−$399.3K
Boussard & Gavaudan Investment Management LLP14K$31MNew
JANE STREET GROUP, LLC13.8K$30.3M$203KAdded$26.8M
HORIZON KINETICS ASSET MANAGEMENT LLC13.1K$28.8M$1.56MAdded$1.54M
ELKHORN PARTNERS LIMITED PARTNERSHIP12.7K$27.9M$1.51MCut−$355.7K
VICTORY CAPITAL MANAGEMENT INC11.1K$24.5M$748.8KAdded$11.4M
SEI INVESTMENTS CO11.1K$24.4M$941.1KAdded$7.93M
SUSQUEHANNA INTERNATIONAL GROUP, LLP11K$24.1M$15.7KAdded$23.8M
Select Equity Group, L.P.10.6K$23.2M$1.26MCut−$17.8M
UBS Group AG10.4K$22.9M$713.7KAdded$10.5M
Quantinno Capital Management LP9.78K$21.5M$864.8KAdded$6.39M
Gotham Asset Management, LLC9.05K$19.9M$798.7KAdded$5.92M
D. E. Shaw & Co., Inc.8.91K$19.6M$1.02MAdded$1.72M
WELLS FARGO & COMPANY/MN8.78K$19.3M$1.04MAdded$298.4K
Bank of New York Mellon Corp8.44K$18.6M$1MAdded$198.1K
AMERICAN CENTURY COMPANIES INC8.31K$18.3M$106.4KAdded$16.4M
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC7.83K$17.2M$910.4KAdded$1.29M
Icahn Capital7.74K$17M$532.3KAdded$7.7M
BNP PARIBAS FINANCIAL MARKETS6.62K$14.6M$397.2KAdded$7.61M
ROYCE & ASSOCIATES LP6.46K$14.2M$707.3KAdded$1.83M
California Public Employees Retirement System6.41K$14.1M$762.8KAdded$135.3K
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC6.05K$13.3M$719.3KCut−$743.6K
WCM INVESTMENT MANAGEMENT, LLC6K$13.2M$690.9KCut−$9.05M
Williams Jones Wealth Management, LLC.5.19K$11.4M$617.6KAdded$619.8K
Swiss National Bank5.04K$11.1M$598.9KAdded$495K
FRANKLIN RESOURCES INC4.8K$10.5M$47.6KAdded$9.71M
Nuveen, LLC4.31K$9.47M$413.3KAdded$2.25M
Phocas Financial Corp.4.29K$9.43M$510.4KCut−$1.98M
RHUMBLINE ADVISERS4.13K$9.08M$491.4KAdded$422.8K
Creative Planning4.05K$8.9M$407KAdded$1.8M
MARSHALL WACE, LLP3.88K$8.52M$130.6KAdded$6.24M
LEE DANNER & BASS INC3.2K$7.04M$369KAdded$588.7K
Edgestream Partners, L.P.3.13K$6.88M$62.9KAdded$5.78M
FIRST TRUST ADVISORS LP3.06K$6.72M$363.7KCut−$2.75M
Invesco Ltd.2.97K$6.52M$352.9KAdded$294.7K
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2.89K$6.34M$292.2KAdded$1.24M
AMERIPRISE FINANCIAL INC2.87K$6.3M$340.9KCut−$47.7K
Renaissance Technologies2.61K$5.74M$178.5KAdded$2.62M
Citadel2.6K$5.72M$141.9KAdded$3.24M
JPMORGAN CHASE & CO2.57K$5.63M$209.2KAdded$1.88M
NEW YORK STATE COMMON RETIREMENT FUND2.51K$5.52M$298.9KAdded$298.9K
Triad Investment Management2.51K$5.52M$298.8KAdded$226.1K
MML INVESTORS SERVICES, LLC2.46K$5.4M$292.5KCut−$696.8K
Legal & General Group Plc2.41K$5.29M$286.4KCut−$1.02M
VANGUARD ASSET MANAGEMENT, Ltd2.33K$5.11MHeld
STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM2.26K$4.97M$268.9KCut−$834.5K
DARK FOREST CAPITAL MANAGEMENT LP2.25K$4.95M$268.2KCut−$2.56M
Robeco Institutional Asset Management B.V.2.18K$4.79M$74.1KAdded$3.49M
DAVENPORT & Co LLC2.12K$4.66M$252.5KAdded$252.5K
BRADLEY FOSTER & SARGENT INC/CT2K$4.4M$238.1KCut−$6.94M
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP1.91K$4.2M$96.5KAdded$2.52M
PARSONS CAPITAL MANAGEMENT INC/RI1.89K$4.15M$222.6KAdded$257.8K
Cerity Partners LLC1.87K$4.1M$222KCut−$3.26M
Atlantic Union Bankshares Corp1.76K$3.88M$209.9KAdded$209.9K
Focus Partners Wealth1.13K$3.82M$1.64MAdded$717.7K
AGF MANAGEMENT LTD1.7K$3.74M$167.5KAdded$815.6K
Regency Capital Management Inc.\DE1.53K$3.37M$182.6KCut−$25.2K
OPPENHEIMER ASSET MANAGEMENT INC.1.48K$3.25M$176KAdded$130.3K
HighTower Advisors, LLC1.45K$3.18M$172.1KAdded$172.1K
CITIGROUP INC1.4K$3.08M$166.5KCut−$766.5K
LPL Financial LLC1.4K$3.07M$166.2KCut−$1.02M
Corient Private Wealth LLC1.4K$3.02M$76.7KAdded$1.14M
Tidal Investments LLC1.35K$2.96M$24KAdded$2.54M
STIFEL FINANCIAL CORP1.29K$2.84M$154.1KAdded$116.6K
Empowered Funds, LLC1.28K$2.82MNew
CAPTRUST FINANCIAL ADVISORS1.24K$2.71M$83.8KAdded$1.25M
Quadrature Capital Ltd1.21K$2.66M$42.8KAdded$1.92M
ROYAL BANK OF CANADA1.2K$2.63M$130.6KAdded$346K
1834 INVESTMENT ADVISORS CO1.18K$2.58M$139.9KAdded$139.9K
PECAUT & CO.1.17K$2.57M$138.8KAdded$149.8K
DIVERSIFIED MANAGEMENT INC1.16K$2.54MNew
Russell Investments Group, Ltd.1.14K$2.51M$46.6KAdded$1.68M
State of New Jersey Common Pension Fund D1.14K$2.49M$135KAdded$135K
JANUS HENDERSON GROUP PLC1.12K$2.46M$126.1KAdded$126.1K
Police & Firemen's Retirement System of New Jersey1.08K$2.38M$127.3KAdded$153.6K
Autumn Glory Partners, LLC1.08K$2.37M$128.4KAdded$128.4K
LEUTHOLD GROUP, LLC1.05K$2.31M$125.1KCut−$9.96K
Qube Research & Technologies Ltd1.02K$2.23M$63.3KAdded$1.13M
O'SHAUGHNESSY ASSET MANAGEMENT, LLC1.01K$2.22M$111.1KAdded$278.1K
Vanguard Global Advisers, LLC1K$2.2MHeld
TD Asset Management Inc932$2.05M$110.8KCut−$30.5K
BRAVE ASSET MANAGEMENT INC924$2.03M$109.9KAdded$109.9K
Capula Management Ltd921$2.02MNew
Zurcher Kantonalbank (Zurich Cantonalbank)913$2.01M$108.6KAdded$108.6K
Aquatic Capital Management LLC912$2M$108.5KCut−$448.4K
Fidelity905$1.99M$107.7KAdded$37K
ALLIANCEBERNSTEIN L.P.953$1.98M$1Added$303.4K
MERCER GLOBAL ADVISORS INC /ADV866$1.9M$85KAdded$416.8K
EQUITABLE TRUST CO830$1.82M$98.7KAdded$77.9K
Sequoia Financial Advisors, LLC824$1.81M$98.1KCut−$72.2K
PRIVATE MANAGEMENT GROUP INC823$1.81M$86.3KAdded$299.4K
Ethic Inc.800$1.76M$79.9KAdded$361.1K
Summit Trail Advisors, LLC760$1.67M$71.4KAdded$422.9K
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO751$1.65M$89.3KAdded$37.4K
NISA INVESTMENT ADVISORS, LLC738$1.62M$87.3KAdded$96.1K
Fieldview Capital Management, LLC729$1.6MNew
ARIZONA STATE RETIREMENT SYSTEM699$1.54M$83.1KAdded$43.6K
BRANDES INVESTMENT PARTNERS, LP698$1.53M$79.1KAdded$151.6K
Texas Yale Capital Corp.687$1.51M$81.7KAdded$81.7K
TRUIST FINANCIAL CORP684$1.5M$81.3KCut−$26.7K
Farther Finance Advisors, LLC656$1.43M$57.2KAdded$244.6K
OSAIC HOLDINGS, INC.650$1.43M$48.7KAdded$576K
Vanguard Investments Australia, Ltd.623$1.37MHeld
Avior Wealth Management, LLC617$1.36M$73.4KAdded$73.4K
Amundi615$1.35MNew
MANUFACTURERS LIFE INSURANCE COMPANY, THE614$1.35M$66KAdded$195.6K
ExodusPoint Capital Management, LP611$1.34MNew
Mariner, LLC607$1.33M$47.8KAdded$498.2K
&PARTNERS598$1.31M$71.1KCut−$12K
ALLSTATE CORP581$1.28MNew
AMG National Trust Bank571$1.25M$67.9KAdded$18K
KLP KAPITALFORVALTNING AS565$1.24M$67.2KAdded$4.85K
Sendero Wealth Management, LLC562$1.23M$66.8KAdded$66.8K
PNC Financial Services Group, Inc.546$1.2M$63.7KAdded$85.7K
BARCLAYS PLC535$1.18M$63.6KAdded$13.8K
B.O.S.S. Retirement Advisors, LLC533$1.17M$63.9KAdded$63.9K
Lexington Hill Partners, LLC520$1.14MNew
REGIONS FINANCIAL CORP517$1.14M$61.5KCut−$510K
Chicago Partners Investment Group LLC467$1.06M$99.3KCut−$15.9K
Parker Investment Management, LLC475$1.04M$56.5KAdded$56.5K
Entropy Technologies, LP470$1.03M$55.9KAdded$14.3K
Pathstone Holdings, LLC460$1.01M$54.1KAdded$65.1K
Legacy Advisors, LLC450$988.6K$53.5KAdded$53.5K
Resona Asset Management Co.,Ltd.443$973.3K$52.7KAdded$52.7K
BANK OF MONTREAL /CAN/433$951.3K$51.3KAdded$55.7K
Pictet Asset Management Holding SA430$944.7K$47.6KAdded$113.5K
Sanctuary Advisors, LLC418$918.6K$49.8KCut−$68.6K
Bridgewater414$909.5KNew
Universal- Beteiligungs- und Servicegesellschaft mbH405$889.8K$42.7KAdded$143.8K
Jain Global LLC396$870K$47.1KCut−$291.6K
Midwest Professional Planners, LTD.395$867.8K$46.1KAdded$61.5K
MILLENNIUM MANAGEMENT LLC387$850.2K$46KCut−$928.6K
KLINGENSTEIN FIELDS & CO LP380$834.8K$45.2KAdded$45.2K
Roundview Capital LLC358$786.7K$42.6KAdded$42.6K
NATIXIS356$782.1KNew
GLENMEDE TRUST CO NA354$777.7K$42.1KAdded$42.1K
Cetera Investment Advisers346$760.5K$41.3KAdded$3.84K
CHOREO, LLC346$760.1K$40.9KAdded$3.53K
American Capital Advisory, LLC342$751.4K$40.7KAdded$40.7K
Caprock Group, LLC340$747K$40.4KCut−$310.8K
Bryant Woods Investment Advisors, LLC340$747K$40.4KAdded$40.4K
Lummis Asset Management, LP325$725.4K$50KAdded$50K
Legacy Wealth Asset Management, LLC321$705.2K$37.2KAdded$54.8K
Vanguard Personalized Indexing Management, LLC314$689.8K$30.1KAdded$164.1K
Cresset Asset Management, LLC299$656.9K$33.2KAdded$77.1K
Brown Miller Wealth Management, LLC298$655.6K$35.5KAdded$35.5K
ELEVATION POINT WEALTH PARTNERS, LLC297$652.5K$26.5KAdded$189.1K
Brooklyn Investment Group295$645.9KNew
Arax Advisory Partners275$605.1K$32.7KAdded$20.2K
Essex Bank275$604.2K$32.7KAdded$32.7K
COMMONWEALTH EQUITY SERVICES, LLC274$602.3K$32.3KAdded$38.9K
Rockefeller Capital Management L.P.260$571.4K$31.1KCut−$52.1K
DEUTSCHE BANK AG\255$560.2K$28.2KAdded$67.7K
XTX Topco Ltd250$549.2K$27.2KAdded$73.4K
STATE OF WISCONSIN INVESTMENT BOARD246$540.5K$16.4KAdded$253.7K
Venturi Wealth Management, LLC243$533.9K$26.3KAdded$74.6K
Shotwell Rutter Baer Inc242$531.7K$29.6KAdded$29.6K
VOYA INVESTMENT MANAGEMENT LLC237$520.7K$28.2KAdded$15.7K
OneAscent Financial Services LLC228$500.9KNew
Atria Investments, Inc226$496.6K$24.9KAdded$62.2K
Athena Investment Management224$492.1K$26.6KAdded$16.3K
Vestmark Advisory Solutions, Inc.223$489.9K$26.5KCut−$177.1K
NICOLET BANKSHARES INC223$485.8KNew
PRINCIPAL SECURITIES, INC.215$472.3K$25.6KAdded$23.5K
Private Advisor Group, LLC213$468K$25.3KAdded$25.3K
MGO ONE SEVEN LLC208$457K$24.3KAdded$33.1K
Hudson Value Partners, LLC206$452.6K$24.4KAdded$24.4K
Sagewood Asset Management LP204$448.2KNew
EVERGREEN CAPITAL MANAGEMENT LLC202$443.8K$17KAdded$146.6K
GAMMA Investing LLC202$443.8K$23.7KAdded$30.3K
Sage Investment Counsel LLC200$439.4K$23.8KAdded$23.8K
Evercore Wealth Management, LLC200$439.4K$23.8KAdded$23.8K
Ensign Peak Advisors, Inc200$439.4K$23.8KAdded$23.8K
Savant Capital, LLC199$437.2K$21.4KAdded$63.1K
BROWN BROTHERS HARRIMAN & CO199$437.2K$2.26KAdded$397.7K
FOLGER NOLAN FLEMING DOUGLAS CAPITAL MANAGEMENT, INC199$437.2K$23.7KAdded$23.7K
IEQ CAPITAL, LLC198$435KNew
RITHOLTZ WEALTH MANAGEMENT196$430.6K$23.2KAdded$25.4K
Wilmington Savings Fund Society, FSB187$410.8K$22.2KCut−$23.5K
Riverwater Partners LLC184$404.2K$21.9KAdded$9.41K
XPONANCE LLC182$399.8K$14.6KAdded$144.2K
State of Wyoming179$393.3K$15.9KAdded$114.8K
BANK OF NOVA SCOTIA178$391.1K$21.2KCut−$1.69K
Frank, Rimerman Advisors LLC178$391.1K$21.2KAdded$21.2K
WEALTH ENHANCEMENT ADVISORY SERVICES, LLC176$381.9K$21.6KCut−$82.9K
M&T Bank Corp170$373.5K$19.7KAdded$28.5K
TEACHER RETIREMENT SYSTEM OF TEXAS169$371.3KNew
UNITED CAPITAL FINANCIAL ADVISORS, LLC166$364.7KNew
SYON CAPITAL LLC164$360.3K$16.7KAdded$69.4K
KEYBANK NATIONAL ASSOCIATION/OH161$353.7K$19.1KCut−$12K
ZACKS INVESTMENT MANAGEMENT157$344.9K$18.7KAdded$18.7K
Evelyn Partners Asset Management Ltd154$338.3K$18.3KAdded$18.3K
CONNABLE OFFICE INC152$333.9K$18.1KAdded$18.1K
HB Wealth Management, LLC151$331.7K$15.5KAdded$61.6K
Douglass Winthrop Advisors, LLC150$329.5K$17.8KAdded$17.8K
MONETA GROUP INVESTMENT ADVISORS LLC150$329.5K$17.8KAdded$17.8K
HUB Investment Partners, LLC150$329.5K$17.4KAdded$26.2K
CreativeOne Wealth, LLC150$329.5K$17.8KAdded$17.8K
Chapman Investment Management, LLC143$314.2K$17KAdded$17K
US BANCORP \DE\137$301K$14.7KAdded$43.3K
Utah Retirement Systems134$294.4K$15.9KAdded$15.9K
QUADRANT CAPITAL GROUP LLC129$283.4K$15.2KAdded$17.4K
PINNACLE ASSOCIATES LTD128$281.2K$15.1KAdded$17.3K
Merit Financial Group, LLC125$274.7K$14.4KAdded$23.2K
Kera Capital Partners, Inc.125$274.6K$17.3KAdded$41.5K
Columbia Asset Management125$274.6K$14.9KAdded$14.9K
HENGEHOLD CAPITAL MANAGEMENT LLC124$272.5K$14.8KCut−$199.3K
CIBC Asset Management Inc124$272.4K$14.7KAdded$14.7K
Storgate, LLC124$272.4K$13.4KAdded$37.6K
Kestra Advisory Services, LLC122$268.2K$14KCut−$88.1K
Weiss Asset Management LP120$263.6KNew
FIRST MANHATTAN CO. LLC.115$252.7K$11.9KAdded$44.8K
One Wealth Advisors, LLC111$243.9K$13.2KAdded$13.2K
Catalyst Funds Management Pty Ltd110$241.7KNew
GREAT LAKES ADVISORS, LLC110$241.7K$13.1KAdded$13.1K
DNB Asset Management AS105$230.7KNew
NewEdge Wealth, LLC105$230.7K$12.5KCut−$22.8K
Eagle Bay Advisors LLC104$228.5K$10.8KAdded$39.4K
Perigon Wealth Management, LLC102$224.1K$12.1KAdded$12.1K
Ballentine Partners, LLC101$221.9K$12KAdded$3.7K
Gladstone Institutional Advisory LLC101$221.9K$11.9KAdded$14.1K

Who left

Positions as of Q1 2026. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.