Skip to content
Disclosery

WTM WHITE MTNS INS GROUP LTD

Follow

COM (common), issuer CIK 776867

333 managers (338 13F filers) reported a position in WTM shares at 2025-09-30, 2,328,316 shares in all. 43 filers opened a position and 28 filers sold out during the quarter.

Managers
333
13F filers
338
New
43
Added
105
Reduced
103
Sold out
28
Shares held by filers
2,328,316

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, Q3 2025

Filers in the available 13F reports with a share position at 2025-09-30, 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 holding247,244$413M-2,159Timeline
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP157,217$263M0.06%+1,46413F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY138,862$232M0.01%-26,20213F-HR/ATimelineGroup
NEUBERGER BERMAN GROUP LLCin group NEUBERGER BERMAN GROUP LLC115,015$192M0.14%+31,31613F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.112,579$188M<0.01%-57913F-HRTimelineGroup
River Road Asset Management, LLC109,588$183M2.05%-30413F-HRTimeline
FULLER & THALER ASSET MANAGEMENT, INC.108,091$181M0.61%+7,10713F-HRTimeline
COOKE & BIELER LP107,851$180M1.86%+31,07013F-HRTimeline
FIDUCIARY MANAGEMENT INC /WI/94,383$158M1.6%+22,90513F-HRTimeline
Boston Partnersin group Boston Trust Walden Corp84,445$143M0.15%-4,94913F-HRTimelineGroup
Wallace Capital Management Inc.81,489$136M16.93%+2,45313F-HRTimeline
LONDON CO OF VIRGINIA66,802$112M0.62%-1,96813F-HRTimeline
STATE STREET CORPin group STATE STREET CORP54,444$91M<0.01%-2,79713F-HRTimelineGroup
T. Rowe Price Investment Management, In…47,772$79.9M0.05%-15,16913F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC42,090$70.4M<0.01%-43913F-HRTimelineGroup
REINHART PARTNERS, LLC.41,609$69.6M2.26%-8513F-HRTimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/38,812$64.9M<0.01%-59713F-HR/ATimelineGroup
LORD, ABBETT & CO. LLC36,919$61.7M0.18%+4,69213F-HRTimeline
SOUTHEASTERN ASSET MANAGEMENT INC/TN/31,652$52.9M2.7%+10,55813F-HRTimeline
Allspring Global Investments Holdings, …in group Allspring Global Investments …31,698$52.3M0.08%+2,11313F-HRTimelineGroup
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC29,392$49.1M0.02%-1,28513F-HRTimelineGroup
Cannell & Spears LLC28,288$47.3M0.89%-5913F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co24,232$40.5M0.01%+4913F-HRTimelineGroup
Mraz, Amerine & Associates, Inc.22,606$37.8M5.89%+1,03013F-HRTimeline
BROWN ADVISORY INCin group BROWN ADVISORY INC20,332$34M0.04%-52213F-HRTimelineGroup
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…19,211$32.1M0.01%-5,44013F-HRTimelineGroup
ENVESTNET ASSET MANAGEMENT INCgroup of 2 filers holding17,845$29.8M+7Timeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP17,757$29.7M<0.01%+35213F-HRTimelineGroup
Robeco Institutional Asset Management B…in group Robeco Institutional Asset Ma…17,239$28.8M0.04%-58313F-HRTimelineGroup
Select Equity Group, L.P.16,946$28.3M0.12%-92613F-HRTimeline
ELKHORN PARTNERS LIMITED PARTNERSHIPin group ELKHORN PARTNERS LIMITED PART…14,810$24.8M16.8%-9013F-HRTimelineGroup
WCM INVESTMENT MANAGEMENT, LLC13,235$22.2M0.05%+13813F-HRTimeline
HORIZON KINETICS ASSET MANAGEMENT LLC13,084$21.9M0.27%+2,11313F-HRTimeline
UBS Group AGgroup of 2 filers holding12,092$20.2M-5,196Timeline
SPEECE THORSON CAPITAL GROUP INC11,262$18.8M3.76%-12113F-HRTimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp10,102$16.9M<0.01%-75813F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN9,352$15.6M<0.01%-23513F-HRTimelineGroup
California Public Employees Retirement …9,232$15.4M0.01%-1,16213F-HRTimeline
THOMPSON SIEGEL & WALMSLEY LLC8,652$14.5M0.23%+34713F-HRTimeline
VICTORY CAPITAL MANAGEMENT INC8,526$14.3M0.01%-9,11413F-HRTimeline
Perpetual Ltdin group Perpetual Ltd8,127$13.6M0.17%+40013F-HRTimelineGroup
GW&K Investment Management, LLC8,010$13.4M0.12%-26213F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPgroup of 2 filers holding7,547$12.6M+7,259Timeline
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC7,106$11.9M0.04%+23713F-HRTimeline
Gotham Asset Management, LLC6,899$11.5M0.05%+5,93913F-HRTimeline
ROYCE & ASSOCIATES LP6,302$10.5M0.11%-30113F-HRTimeline
Quantinno Capital Management LP6,054$10.1M0.03%+1,76413F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC5,911$9.88M<0.01%-97413F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC5,913$9.84M0.01%-2,17113F-HRTimelineGroup
BRADLEY FOSTER & SARGENT INC/CT5,546$9.27M0.14%+2413F-HRTimeline
Phocas Financial Corp.5,505$9.2M1.19%+11313F-HRTimeline
SEI INVESTMENTS COin group SEI INVESTMENTS CO5,386$9M0.01%+48113F-HRTimelineGroup
Williams Jones Wealth Management, LLC.5,193$8.68M0.1%013F-HRTimeline
Swiss National Bank4,946$8.27M<0.01%013F-HRTimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC4,820$8.06M0.01%-1,25113F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO4,322$7.22M<0.01%+1,99913F-HR/ATimelineGroup
RHUMBLINE ADVISERS4,232$7.07M0.01%-4813F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc4,049$6.77M<0.01%-26013F-HRTimelineGroup
PROSPECTOR PARTNERS LLCin group PROSPECTOR PARTNERS LLC3,783$6.32M0.76%-29313F-HRTimelineGroup
Franklin Resourcesgroup of 2 filers holding3,722$6.22M-238Timeline
HRT FINANCIAL LP3,587$6M0.02%-1,50013F-HRTimeline
Nuveen, LLCin group TIAA3,458$5.78M<0.01%013F-HRTimelineGroup
Invesco Ltd.in group Invesco Ltd.3,317$5.54M<0.01%-32913F-HRTimelineGroup
LEE DANNER & BASS INC3,148$5.26M0.38%013F-HRTimeline
STATE BOARD OF ADMINISTRATION OF FLORID…3,142$5.25M0.01%+52913F-HRTimeline
Creative Planningin group Creative Planning3,102$5.18M<0.01%+26013F-HRTimelineGroup
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC3,028$5.06M<0.01%-45413F-HRTimelineGroup
Lighthouse Investment Partners, LLCin group Lighthouse Investment Partner…2,939$4.91M0.18%new13F-HRTimelineGroup
MML INVESTORS SERVICES, LLC2,852$4.77M0.01%+11813F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND2,519$4.21M0.01%013F-HRTimeline
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.2,512$4.2M<0.01%+7613F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…2,433$4.07M<0.01%+6113F-HRTimeline
LPL Financial LLC2,306$3.85M<0.01%+32113F-HRTimeline
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC2,242$3.75M<0.01%-4,12313F-HRTimelineGroup
DAVENPORT & Co LLC2,173$3.63M0.02%013F-HRTimeline
Forum Financial Management, LPin group Forum Financial Management, LP2,016$3.37M0.05%013F-HRTimelineGroup
Cerity Partners LLCin group Cerity Partners LLC1,940$3.24M0.01%+4013F-HRTimelineGroup
PRICE T ROWE ASSOCIATES INC /MD/1,882$3.15M<0.01%+13113F-HRTimeline
PARSONS CAPITAL MANAGEMENT INC/RI1,882$3.15M0.18%-1013F-HRTimeline
RENAISSANCE TECHNOLOGIES LLC1,851$3.09M<0.01%new13F-HRTimeline
AGF MANAGEMENT LTDin group AGF MANAGEMENT LTD1,780$2.98M0.01%+44813F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA1,770$2.96M<0.01%-42013F-HRTimelineGroup
Atlantic Union Bankshares Corpin group Atlantic Union Bankshares Corp1,765$2.95M0.06%new13F-HRTimelineGroup
OPPENHEIMER ASSET MANAGEMENT INC.in group OPPENHEIMER ASSET MANAGEMENT …1,572$2.63M0.03%+20913F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS1,536$2.57M<0.01%+1,34813F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC1,489$2.49M<0.01%+12713F-HRTimelineGroup
HighTower Advisors, LLC1,465$2.45M<0.01%+113F-HRTimeline
Edgestream Partners, L.P.1,371$2.29M0.07%-6,43813F-HRTimeline
Focus Partners Wealthin group Focus Partners Wealth1,353$2.26M<0.01%-24313F-HRTimelineGroup
STIFEL FINANCIAL CORPin group STIFEL FINANCIAL CORP1,316$2.2M<0.01%-2813F-HRTimelineGroup
Main Street Financial Solutions, LLC1,261$2.11M0.14%-3213F-HRTimeline
LEUTHOLD GROUP, LLC1,206$2.02M0.22%+4113F-HRTimeline
1834 INVESTMENT ADVISORS CO1,176$1.97M0.24%013F-HRTimeline
TRUIST FINANCIAL CORPin group TRUIST FINANCIAL CORP1,173$1.96M<0.01%-6713F-HRTimelineGroup
PECAUT & CO.1,167$1.95M0.63%013F-HRTimeline
TD Asset Management Inc1,166$1.95M<0.01%-45213F-HRTimeline
State of New Jersey Common Pension Fund…in group State of New Jersey Common Pe…1,155$1.93M0.01%+10713F-HRTimelineGroup
Treasurer of the State of North Carolina1,125$1.88M0.01%-3713F-HRTimeline
JANUS HENDERSON GROUP PLCin group Janus Henderson1,123$1.88M<0.01%013F-HRTimelineGroup
Police & Firemen's Retirement System of…1,117$1.87M0.02%+18313F-HRTimeline
Handelsbanken Fonder AB1,100$1.84M0.01%+50013F-HRTimeline
Cove Street Capital, LLC1,083$1.81M2.36%+60913F-HRTimeline
Autumn Glory Partners, LLC1,080$1.81M0.74%013F-HRTimeline
O'SHAUGHNESSY ASSET MANAGEMENT, LLC983$1.64M0.01%+4413F-HRTimeline
ALLIANCEBERNSTEIN L.P.955$1.6M<0.01%-17213F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC952$1.59M<0.01%-2,43113F-HR/ATimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC934$1.56M<0.01%-45813F-HRTimelineGroup
ODDO BHF ASSET MANAGEMENT SAS930$1.55M0.06%-3413F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
BRAVE ASSET MANAGEMENT INC924$1.54M0.38%013F-HRTimeline
Magnetar Financial LLCin group Magnetar Financial LLC881$1.47M0.01%new13F-HRTimelineGroup
HARBOR CAPITAL ADVISORS, INC.852$1.42M0.11%-2,12413F-HRTimeline
Holocene Advisors, LP839$1.4M<0.01%new13F-HRTimeline
Summit Trail Advisors, LLC828$1.38M0.02%+45613F-HRTimeline
Sequoia Financial Advisors, LLC818$1.37M0.01%-1213F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF O…814$1.36M<0.01%+413F-HRTimeline
Regency Capital Management Inc.\DE811$1.36M0.64%new13F-HRTimeline
REGIONS FINANCIAL CORPin group REGIONS FINANCIAL CORP792$1.32M0.01%+13413F-HR/ATimelineGroup
EQUITABLE TRUST CO787$1.32M0.06%013F-HRTimeline
TEACHERS RETIREMENT SYSTEM OF THE STATE…767$1.28M0.01%-44113F-HRTimeline
Aquatic Capital Management LLC765$1.28M0.02%new13F-HRTimeline
ARIZONA STATE RETIREMENT SYSTEM762$1.27M0.01%+1113F-HRTimeline
Ethic Inc.743$1.24M0.02%-3713F-HRTimeline
NISA INVESTMENT ADVISORS, LLC734$1.23M<0.01%+313F-HRTimeline
CAPTRUST FINANCIAL ADVISORS707$1.18M<0.01%-5213F-HRTimeline
PARK AVENUE SECURITIES LLCin group PARK AVENUE SECURITIES LLC702$1.17M0.01%+6513F-HRTimelineGroup
Texas Yale Capital Corp.680$1.14M0.04%new13F-HRTimeline
Oak Thistle LLC657$1.1M0.17%new13F-HRTimeline
Qube Research & Technologies Ltd636$1.06M<0.01%-1,15613F-HRTimeline
FMR LLCin group FMR LLC625$1.04M<0.01%+6413F-HRTimelineGroup
&PARTNERS623$1.04M0.01%-1413F-HRTimeline
Midwest Professional Planners, LTD.622$1.04M0.25%-613F-HRTimeline
Avior Wealth Management, LLC617$1.03M0.03%new13F-HRTimeline
BRANDES INVESTMENT PARTNERS, LPin group BRANDES INVESTMENT PARTNERS, …614$1.03M0.01%+4413F-HRTimelineGroup
Tidal Investments LLCin group Tidal Investments LLC608$1.02M<0.01%new13F-HRTimelineGroup
KLP KAPITALFORVALTNING AS605$1.01M<0.01%+10013F-HRTimeline
Corient Private Wealth LPin group Corient Private Wealth LP598$999K<0.01%-25113F-HRTimelineGroup
Chicago Partners Investment Group LLC516$981K0.03%+513F-HRTimeline
AMG National Trust Bank577$964K0.02%+213F-HRTimeline
Sendero Wealth Management, LLC562$939K0.11%+14313F-HRTimeline
KING LUTHER CAPITAL MANAGEMENT CORP560$936K<0.01%-4013F-HRTimeline
Caprock Group, LLC492$900K0.02%13F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …534$893K<0.01%+1013F-HRTimelineGroup
B.O.S.S. Retirement Advisors, LLC533$891K0.21%013F-HRTimeline
Arax Advisory Partners508$851K0.01%+32713F-HRTimeline
Ensign Peak Advisors, Inc500$836K<0.01%-40013F-HR/ATimeline
Parker Investment Management, LLC500$836K0.11%013F-HRTimeline
Sanctuary Advisors, LLC495$827K<0.01%+6513F-HR/ATimeline
Farther Finance Advisors, LLC476$796K0.01%+813F-HRTimeline
Janney Montgomery Scott LLC462$772K<0.01%+1613F-HRTimeline
Resona Asset Management Co.,Ltd.in group Resona Asset Management Co.,L…452$756K<0.01%-3513F-HRTimelineGroup
Legacy Advisors, LLC450$752K0.09%new13F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…438$732K<0.01%+413F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.413$731K<0.01%+2313F-HRTimelineGroup
BANK OF MONTREAL /CAN/in group BANK OF MONTREAL /CAN/432$722K<0.01%013F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…420$702K0.02%+23013F-HRTimelineGroup
ExodusPoint Capital Management, LP401$670K0.01%+4513F-HRTimeline
CHOREO, LLC396$662K0.01%+22313F-HRTimeline
Walleye Capital LLCin group Walleye Capital LLC396$662K0.01%+9613F-HRTimelineGroup
HENGEHOLD CAPITAL MANAGEMENT LLC394$659K0.06%-9913F-HRTimeline
Pathstone Holdings, LLCin group Pathstone Holdings, LLC392$655K<0.01%+813F-HRTimelineGroup
Kathleen S. Wright Associates Inc.340$647K0.24%-4013F-HRTimeline
KLINGENSTEIN FIELDS & CO LP380$635K0.02%013F-HRTimeline
Roundview Capital LLC373$624K0.04%-213F-HRTimeline
QRG CAPITAL MANAGEMENT, INC.369$617K0.01%-1313F-HRTimeline
CAPSTONE INVESTMENT ADVISORS, LLCin group CAPSTONE INVESTMENT ADVISORS,…368$615K0.01%new13F-HRTimelineGroup
Cetera Investment Advisers364$609K<0.01%+10313F-HRTimeline
Glenmede Investment Management, LP362$605K<0.01%-1213F-HRTimeline
American Capital Advisory, LLC357$597K0.28%013F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION…353$590K<0.01%013F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…351$587K<0.01%+23413F-HRTimelineGroup
Pictet Asset Management Holding SAin group Pictet Asset Management Holdi…350$585K<0.01%013F-HRTimelineGroup
Global Retirement Partners, LLC343$573K0.01%+1513F-HRTimeline
Bryant Woods Investment Advisors, LLC340$568K0.22%013F-HRTimeline
TEACHER RETIREMENT SYSTEM OF TEXAS337$563K<0.01%-5413F-HRTimeline
Lummis Asset Management, LP325$543K0.36%013F-HRTimeline
Farringdon Capital, Ltd.310$518K0.13%new13F-HRTimeline
Virtu Financial LLCin group Virtu Financial LLC309$516K0.03%new13F-HRTimelineGroup
Legacy Wealth Asset Management, LLC308$515K0.13%+213F-HRTimeline
Shotwell Rutter Baer Inc270$512K0.33%013F-HRTimeline
COMMONWEALTH EQUITY SERVICES, LLC300$502K<0.01%-2413F-HRTimeline
Jain Global LLC299$500K0.01%-113F-HRTimeline
Brown Miller Wealth Management, LLC298$499K0.14%013F-HRTimeline
Balyasny Asset Management L.P.in group Balyasny Asset Management298$498K<0.01%new13F-HRTimelineGroup
Universal- Beteiligungs- und Serviceges…in group Universal- Beteiligungs- und …292$488K<0.01%+6213F-HRTimelineGroup
Cresset Asset Management, LLC284$475K<0.01%+213F-HR/ATimeline
Essex Bankin group Essex Financial Services, Inc.284$475K0.11%013F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC281$470K<0.01%-89013F-HRTimelineGroup
Highlander Partners, L.P.280$468K0.16%013F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…253$423K<0.01%013F-HRTimeline
STATE OF WISCONSIN INVESTMENT BOARD249$416K<0.01%+713F-HRTimeline
NICOLET ADVISORY SERVICES, LLCin group NICOLET BANKSHARES INC213$406K0.03%new13F-HRTimelineGroup
WEALTH ENHANCEMENT ADVISORY SERVICES, L…210$400K<0.01%-2113F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\234$391K<0.01%+2413F-HRTimelineGroup
Athena Investment Management229$383K0.2%013F-HRTimeline
WEDBUSH SECURITIES INC224$374K0.01%+1313F-HRTimeline
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…220$368K<0.01%new13F-HRTimelineGroup
Venturi Wealth Management, LLC214$358K0.02%+113F-HRTimeline
Mariner, LLCin group Mariner, LLC214$357K<0.01%-52813F-HRTimelineGroup
Private Advisor Group, LLC211$353K<0.01%013F-HRTimeline
PRINCIPAL SECURITIES, INC.in group PRINCIPAL FINANCIAL GROUP INC210$351K0.01%+1013F-HRTimelineGroup