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Disclosery

WTM WHITE MTNS INS GROUP LTD

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COM (common), issuer CIK 776867

321 managers (326 13F filers) reported a position in WTM shares at 2025-06-30, 2,320,130 shares in all. 30 filers opened a position and 26 filers sold out during the quarter.

Managers
321
13F filers
326
New
30
Added
103
Reduced
112
Sold out
26
Shares held by filers
2,320,130

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q2 2025

Filers in the available 13F reports with a share position at 2025-06-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
VANGUARD GROUP INCgroup of 2 filers holding249,403$448M-919Timeline
MORGAN STANLEYin group MORGAN STANLEY165,064$296M0.02%-5,56713F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP155,753$280M0.06%-86413F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.113,158$203M<0.01%-3,64113F-HRTimelineGroup
River Road Asset Management, LLC109,892$196M2.49%+22713F-HRTimeline
FULLER & THALER ASSET MANAGEMENT, INC.100,984$181M0.66%-9,10813F-HRTimeline
Boston Partnersin group Boston Trust Walden Corp89,394$160M0.18%+4,15813F-HR/ATimelineGroup
NEUBERGER BERMAN GROUP LLCin group NEUBERGER BERMAN GROUP LLC83,699$150M0.12%+26,83513F-HR/ATimelineGroup
Wallace Capital Management Inc.79,036$142M19.34%-89513F-HRTimeline
COOKE & BIELER LP76,781$138M1.38%+22,12913F-HRTimeline
FIDUCIARY MANAGEMENT INC /WI/71,478$128M1.23%-31713F-HRTimeline
LONDON CO OF VIRGINIA68,770$124M0.7%-38813F-HRTimeline
T. Rowe Price Investment Management, In…62,941$113M0.07%+47513F-HRTimeline
STATE STREET CORPin group STATE STREET CORP57,241$103M<0.01%+2,29713F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC42,529$76.4M0.01%+34313F-HRTimelineGroup
REINHART PARTNERS, LLC.41,694$74.9M2.56%-78413F-HRTimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/39,409$70.8M0.01%-1,64613F-HRTimelineGroup
LORD, ABBETT & CO. LLC32,227$57.9M0.19%-62413F-HRTimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC30,677$55.1M0.02%-1,04713F-HRTimelineGroup
NORGES BANK30,494$54.8M0.01%-47613F-HRTimeline
Allspring Global Investments Holdings, …in group Allspring Global Investments …29,585$53M0.09%+4,72813F-HRTimelineGroup
Cannell & Spears LLC28,347$50.9M1.03%-32113F-HRTimeline
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…24,651$44.3M0.01%-78713F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co24,183$43.4M0.01%-52313F-HRTimelineGroup
Mraz, Amerine & Associates, Inc.21,576$38.7M6.21%+54813F-HRTimeline
SOUTHEASTERN ASSET MANAGEMENT INC/TN/21,094$37.9M1.91%+2,61013F-HRTimeline
BROWN ADVISORY INCin group BROWN ADVISORY INC20,854$37.4M0.05%-1,22213F-HRTimelineGroup
Select Equity Group, L.P.17,872$32.1M0.14%-10,12713F-HRTimeline
ENVESTNET ASSET MANAGEMENT INCgroup of 2 filers holding17,838$32M+282Timeline
Robeco Institutional Asset Management B…in group Robeco Institutional Asset Ma…17,822$32M0.05%-1,33213F-HRTimelineGroup
VICTORY CAPITAL MANAGEMENT INC17,640$31.7M0.02%+1,54913F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP17,405$31.3M<0.01%-81713F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding17,288$31M+2,483Timeline
ELKHORN PARTNERS LIMITED PARTNERSHIPin group ELKHORN PARTNERS LIMITED PART…14,900$26.8M19.45%-513F-HRTimelineGroup
WCM INVESTMENT MANAGEMENT, LLC13,097$23.4M0.05%-14813F-HRTimeline
SPEECE THORSON CAPITAL GROUP INC11,383$20.4M4.16%+22413F-HRTimeline
HORIZON KINETICS ASSET MANAGEMENT LLC10,971$19.7M0.23%-37413F-HRTimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp10,860$19.5M<0.01%-1,71013F-HRTimelineGroup
California Public Employees Retirement …10,394$18.7M0.01%-1,14113F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN9,587$17.2M<0.01%+23713F-HRTimelineGroup
THOMPSON SIEGEL & WALMSLEY LLC8,305$14.9M0.25%-1213F-HRTimeline
GW&K Investment Management, LLC8,272$14.9M0.13%-19513F-HRTimeline
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC8,084$14.4M0.01%-40813F-HRTimelineGroup
Edgestream Partners, L.P.7,809$14M0.39%+4,26913F-HRTimeline
Perpetual Ltdin group Perpetual Ltd7,727$13.9M0.16%013F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC6,885$12.4M<0.01%+2,62613F-HRTimelineGroup
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC6,869$12.3M0.04%-2413F-HRTimeline
ROYCE & ASSOCIATES LP6,603$11.9M0.12%-4,98513F-HRTimeline
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC6,365$11.4M0.01%-67113F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC6,071$10.9M0.02%+5,49313F-HRTimelineGroup
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP5,672$10.2M0.01%-17,25513F-HRTimelineGroup
BRADLEY FOSTER & SARGENT INC/CT5,522$9.92M0.16%new13F-HRTimeline
Phocas Financial Corp.5,392$9.68M1.39%+113F-HRTimeline
Williams Jones Wealth Management, LLC.5,193$9.33M0.11%013F-HRTimeline
HRT FINANCIAL LP5,087$9.13M0.04%new13F-HRTimeline
Swiss National Bank4,946$8.88M0.01%013F-HRTimeline
SEI INVESTMENTS COin group SEI INVESTMENTS CO4,905$8.81M0.01%+80513F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc4,309$7.74M<0.01%+17913F-HRTimelineGroup
Quantinno Capital Management LP4,290$7.7M0.03%-31613F-HRTimeline
RHUMBLINE ADVISERS4,280$7.69M0.01%-19213F-HRTimeline
PROSPECTOR PARTNERS LLCin group PROSPECTOR PARTNERS LLC4,076$7.32M0.85%+22113F-HRTimelineGroup
Franklin Resourcesgroup of 2 filers holding3,960$7.11M-131Timeline
Invesco Ltd.in group Invesco Ltd.3,646$6.55M<0.01%-37413F-HRTimelineGroup
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC3,482$6.25M<0.01%-5013F-HRTimelineGroup
Nuveen, LLCin group TIAA3,458$6.21M<0.01%-4,31213F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC3,383$6.07M<0.01%+8813F-HR/ATimelineGroup
LEE DANNER & BASS INC3,148$5.65M0.44%013F-HRTimeline
HARBOR CAPITAL ADVISORS, INC.2,976$5.34M0.22%-8213F-HRTimeline
Creative Planningin group Creative Planning2,842$5.1M<0.01%+15213F-HRTimelineGroup
MML INVESTORS SERVICES, LLC2,734$4.91M0.01%+16013F-HRTimeline
STATE BOARD OF ADMINISTRATION OF FLORID…2,613$4.69M0.01%-37913F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND2,519$4.52M0.01%-20413F-HR/ATimeline
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.2,436$4.37M<0.01%+7813F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…2,372$4.26M<0.01%013F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO2,323$4.17M<0.01%+33713F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA2,190$3.93M<0.01%+90813F-HR/ATimelineGroup
DAVENPORT & Co LLC2,173$3.9M0.02%013F-HRTimeline
Forum Financial Management, LPin group Forum Financial Management, LP2,016$3.62M0.06%+35313F-HRTimelineGroup
LPL Financial LLC1,985$3.56M<0.01%+11513F-HRTimeline
Cerity Partners LLCin group Cerity Partners LLC1,900$3.41M0.01%+413F-HRTimelineGroup
PARSONS CAPITAL MANAGEMENT INC/RI1,892$3.4M0.21%+38413F-HRTimeline
Qube Research & Technologies Ltd1,792$3.22M<0.01%+51713F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/1,751$3.15M<0.01%+7913F-HRTimeline
TD Asset Management Inc1,618$2.91M<0.01%+2613F-HRTimeline
Focus Partners Wealthin group Focus Partners Wealth1,596$2.87M0.01%+24913F-HRTimelineGroup
STRS OHIO1,575$2.83M0.01%+43013F-HRTimeline
HighTower Advisors, LLC1,464$2.63M<0.01%-213F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC1,392$2.5M<0.01%+43613F-HRTimelineGroup
OPPENHEIMER ASSET MANAGEMENT INC.in group OPPENHEIMER ASSET MANAGEMENT …1,363$2.45M0.03%+2813F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC1,362$2.45M<0.01%+49413F-HRTimelineGroup
STIFEL FINANCIAL CORPin group STIFEL FINANCIAL CORP1,344$2.41M<0.01%-6113F-HRTimelineGroup
AGF MANAGEMENT LTDin group AGF MANAGEMENT LTD1,332$2.39M0.01%+5613F-HRTimelineGroup
Main Street Financial Solutions, LLC1,293$2.32M0.17%+3213F-HRTimeline
TRUIST FINANCIAL CORPin group TRUIST FINANCIAL CORP1,240$2.23M<0.01%-12913F-HRTimelineGroup
TEACHERS RETIREMENT SYSTEM OF THE STATE…1,208$2.17M0.02%013F-HRTimeline
1834 INVESTMENT ADVISORS CO1,176$2.11M0.27%013F-HRTimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC1,171$2.1M<0.01%-513F-HRTimelineGroup
PECAUT & CO.1,167$2.1M0.7%013F-HRTimeline
LEUTHOLD GROUP, LLC1,165$2.09M0.25%-2313F-HRTimeline
Treasurer of the State of North Carolina1,162$2.09M0.01%+3613F-HRTimeline
ALLIANCEBERNSTEIN L.P.1,127$2.02M<0.01%-2813F-HRTimeline
JANUS HENDERSON GROUP PLCin group Janus Henderson1,123$2.01M<0.01%013F-HRTimelineGroup
Autumn Glory Partners, LLC1,080$1.94M0.91%013F-HRTimeline
State of New Jersey Common Pension Fund…in group State of New Jersey Common Pe…1,048$1.88M0.01%-2513F-HRTimelineGroup
ODDO BHF ASSET MANAGEMENT SAS964$1.73M0.07%-2613F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Gotham Asset Management, LLC960$1.72M0.01%new13F-HRTimeline
O'SHAUGHNESSY ASSET MANAGEMENT, LLC939$1.69M0.01%-11813F-HRTimeline
Police & Firemen's Retirement System of…934$1.68M0.02%+5013F-HRTimeline
BRAVE ASSET MANAGEMENT INC924$1.66M0.45%013F-HRTimeline
Ensign Peak Advisors, Inc900$1.62M<0.01%-10013F-HRTimeline
Corient Private Wealth LPin group Corient Private Wealth LP849$1.52M<0.01%+16913F-HR/ATimelineGroup
Sequoia Financial Advisors, LLC830$1.49M0.01%+413F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF O…810$1.45M<0.01%+1613F-HRTimeline
EQUITABLE TRUST CO787$1.41M0.07%+23413F-HRTimeline
Ethic Inc.780$1.39M0.02%+18913F-HRTimeline
CAPTRUST FINANCIAL ADVISORS759$1.36M<0.01%-13013F-HRTimeline
ARIZONA STATE RETIREMENT SYSTEM751$1.35M0.01%+1413F-HRTimeline
Mariner, LLCin group Mariner, LLC742$1.33M<0.01%+2213F-HRTimelineGroup
NISA INVESTMENT ADVISORS, LLC731$1.31M0.01%+113F-HRTimeline
REGIONS FINANCIAL CORPin group REGIONS FINANCIAL CORP658$1.18M0.01%+10813F-HRTimelineGroup
PARK AVENUE SECURITIES LLCin group PARK AVENUE SECURITIES LLC637$1.14M0.01%new13F-HRTimelineGroup
&PARTNERS637$1.14M0.01%+24113F-HRTimeline
Midwest Professional Planners, LTD.628$1.13M0.3%+3613F-HRTimeline
KING LUTHER CAPITAL MANAGEMENT CORP600$1.08M<0.01%-1013F-HRTimeline
Handelsbanken Fonder AB600$1.08M<0.01%013F-HRTimeline
AMG National Trust Bank575$1.03M0.03%+113F-HRTimeline
Verition Fund Management LLC571$1.03M0.01%-44313F-HRTimeline
BRANDES INVESTMENT PARTNERS, LPin group BRANDES INVESTMENT PARTNERS, …570$1.02M0.01%+5513F-HRTimelineGroup
FMR LLCin group FMR LLC561$1.01M<0.01%-1113F-HRTimelineGroup
Quadrature Capital Ltdin group Quadrature Capital Ltd548$983K0.02%+25413F-HRTimelineGroup
B.O.S.S. Retirement Advisors, LLC533$957K0.24%new13F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …524$941K<0.01%-3213F-HRTimelineGroup
Chicago Partners Investment Group LLC511$914K0.03%+2013F-HRTimeline
KLP KAPITALFORVALTNING AS505$907K<0.01%013F-HRTimeline
Parker Investment Management, LLC500$898K0.14%013F-HRTimeline
HENGEHOLD CAPITAL MANAGEMENT LLC493$885K0.08%+5913F-HRTimeline
Resona Asset Management Co.,Ltd.in group Resona Asset Management Co.,L…487$875K<0.01%+1613F-HRTimelineGroup
Mitsubishi UFJ Trust & Banking Corpgroup of 2 filers holding486$873K-331Timeline
Cove Street Capital, LLC474$851K1.25%-1713F-HRTimeline
Farther Finance Advisors, LLC468$840K0.02%+7613F-HRTimeline
Janney Montgomery Scott LLC446$801K<0.01%+3313F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…434$779K<0.01%-513F-HRTimelineGroup
BANK OF MONTREAL /CAN/in group BANK OF MONTREAL /CAN/432$776K<0.01%+1613F-HRTimelineGroup
Sanctuary Advisors, LLC430$772K<0.01%-32613F-HRTimeline
Sendero Wealth Management, LLC419$752K0.09%013F-HR/ATimeline
FIRST MANHATTAN CO. LLC.401$720K<0.01%-71413F-HRTimeline
TEACHER RETIREMENT SYSTEM OF TEXAS391$702K<0.01%+1613F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.390$701K<0.01%+1913F-HR/ATimelineGroup
Pathstone Holdings, LLCin group Pathstone Holdings, LLC384$690K<0.01%+3013F-HRTimelineGroup
QRG CAPITAL MANAGEMENT, INC.382$686K0.01%-313F-HRTimeline
KLINGENSTEIN FIELDS & CO LP380$682K0.03%013F-HRTimeline
Kathleen S. Wright Associates Inc.380$676K0.26%013F-HRTimeline
Roundview Capital LLC375$674K0.05%013F-HRTimeline
Glenmede Investment Management, LP374$672K<0.01%13F-HRTimeline
Summit Trail Advisors, LLC372$668K0.01%-11413F-HRTimeline
American Capital Advisory, LLC357$641K0.32%013F-HRTimeline
ExodusPoint Capital Management, LP356$639K0.01%-32613F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION…353$634K<0.01%013F-HRTimeline
Pictet Asset Management Holding SAin group Pictet Asset Management Holdi…350$629K<0.01%-4013F-HRTimelineGroup
Bryant Woods Investment Advisors, LLC340$611K0.26%013F-HRTimeline
Global Retirement Partners, LLC328$589K0.01%13F-HRTimeline
COMMONWEALTH EQUITY SERVICES, LLC324$582K<0.01%+1413F-HRTimeline
Lummis Asset Management, LP325$569K0.37%013F-HRTimeline
Legacy Wealth Asset Management, LLC306$549K0.14%-613F-HRTimeline
Walleye Capital LLCin group Walleye Capital LLC300$539K<0.01%new13F-HRTimelineGroup
Jain Global LLC300$539K0.01%new13F-HRTimeline
SummitTX Capital, L.P.299$537K0.02%new13F-HRTimeline
Brown Miller Wealth Management, LLC298$536K0.17%013F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPgroup of 2 filers holding288$517K-916Timeline
Essex Bankin group Essex Financial Services, Inc.284$510K0.12%013F-HRTimelineGroup
Cresset Asset Management, LLC282$506K<0.01%-2213F-HR/ATimeline
Highlander Partners, L.P.280$503K0.19%013F-HRTimeline
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC279$501K<0.01%-24513F-HRTimelineGroup
Squarepoint Ops LLCin group Squarepoint Ops LLC279$501K<0.01%+8313F-HR/ATimelineGroup
Atria Investments, Inc269$483K0.01%-34013F-HRTimeline
Shotwell Rutter Baer Inc270$482K0.33%013F-HRTimeline
Cetera Investment Advisers261$469K<0.01%+913F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…253$454K<0.01%013F-HRTimeline
STATE OF WISCONSIN INVESTMENT BOARD242$435K<0.01%-2113F-HRTimeline
Petrus Trust Company, LTA238$427K0.04%new13F-HRTimeline
ALGERT GLOBAL LLC233$418K0.01%013F-HR/ATimeline
Universal- Beteiligungs- und Serviceges…in group Universal- Beteiligungs- und …230$413K<0.01%+7013F-HRTimelineGroup
WEALTH ENHANCEMENT ADVISORY SERVICES, L…231$412K<0.01%+5813F-HRTimeline
Athena Investment Management229$411K0.23%-213F-HRTimeline
Atria Wealth Solutions, Inc.229$411K0.01%+1813F-HRTimeline
Yorktown Management & Research Co Inc220$395K0.38%013F-HRTimeline
Premier Fund Managers Ltd221$395K0.01%new13F-HRTimeline
One Wealth Advisors, LLC215$386K0.05%013F-HRTimeline
RITHOLTZ WEALTH MANAGEMENT214$384K0.01%-2213F-HRTimeline
Venturi Wealth Management, LLC213$382K0.02%-3613F-HRTimeline
WEDBUSH SECURITIES INC211$379K0.01%+613F-HRTimeline
Private Advisor Group, LLC211$379K<0.01%-313F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\210$377K<0.01%-11213F-HRTimelineGroup
Hudson Value Partners, LLC206$370K0.13%013F-HRTimeline
Nebula Research & Development LLC201$361K0.03%-56113F-HRTimeline
Evercore Wealth Management, LLC200$359K0.01%013F-HRTimeline
Sage Investment Counsel LLC200$359K0.42%013F-HRTimeline
PRINCIPAL FINANCIAL GROUP INCgroup of 2 filers holding200$359K-110Timeline
NEVILLE RODIE & SHAW INC200$359K0.03%013F-HRTimeline
FOLGER NOLAN FLEMING DOUGLAS CAPITAL MA…199$357K0.04%013F-HRTimeline