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Disclosery

WTM WHITE MTNS INS GROUP LTD

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COM (common), issuer CIK 776867

348 managers (356 13F filers) reported a position in WTM shares at 2026-06-30, 2,202,059 shares in all. 34 filers opened a position and 44 filers sold out during the quarter.

Managers
348
13F filers
356
New
34
Added
96
Reduced
146
Sold out
44
Shares held by filers
2,202,059

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 2026

Filers in the available 13F reports with a share position at 2026-06-30, 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 7 filers holding238,978$495M-5,182Timeline
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP158,954$330M0.06%+2,33613F-HRTimelineGroup
NEUBERGER BERMAN GROUP LLCin group NEUBERGER BERMAN GROUP LLC119,141$247M0.16%-5,57413F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.117,871$244M<0.01%+4,54313F-HRTimelineGroup
River Road Asset Management, LLC115,880$240M2.67%-4,63913F-HRTimeline
FULLER & THALER ASSET MANAGEMENT, INC.101,892$211M0.58%-2,66913F-HRTimeline
COOKE & BIELER LP85,120$176M2.04%-19,73713F-HRTimeline
Wallace Capital Management Inc.80,067$166M18.2%+1,27213F-HRTimeline
FIDUCIARY MANAGEMENT INC /WI/66,550$138M1.96%-18,51613F-HRTimeline
GENDELL JEFFREY Lin group GENDELL JEFFREY L59,243$123M1.11%+21,42913F-HRTimelineGroup
Boston Partnersin group Boston Trust Walden Corp55,569$115M0.1%-1,89013F-HRTimelineGroup
LONDON CO OF VIRGINIA54,025$112M0.64%-3,10613F-HRTimeline
STATE STREET CORPin group STATE STREET CORP50,257$104M<0.01%+1,09913F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC49,412$102M0.01%+7,29313F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY46,866$97.2M0.01%-12,42913F-HRTimelineGroup
REINHART PARTNERS, LLC.44,480$92.3M2.11%+7,10613F-HRTimeline
T. Rowe Price Investment Management, In…34,237$71M0.05%-7,27613F-HRTimeline
LORD, ABBETT & CO. LLC32,829$68.1M0.19%-28113F-HRTimeline
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC31,108$64.5M0.03%+22,80013F-HRTimelineGroup
NORGES BANK27,956$58M0.01%new13F-HRTimeline
Cannell & Spears LLC27,577$57.2M1.02%-45013F-HRTimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/25,028$51.9M<0.01%-3,33013F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co23,505$48.7M0.01%-73613F-HRTimelineGroup
Mraz, Amerine & Associates, Inc.22,218$46.1M6.61%+3913F-HRTimeline
Allspring Global Investments Holdings, …in group Allspring Global Investments …18,116$37.4M0.06%-49613F-HRTimelineGroup
Gotham Asset Management, LLC17,940$37.2M0.09%+8,89313F-HRTimeline
BROWN ADVISORY INCin group BROWN ADVISORY INC17,722$36.7M0.06%-12213F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC17,226$35.7M0.02%+3,41813F-HRTimelineGroup
SOUTHEASTERN ASSET MANAGEMENT INC/TN/17,104$35.5M1.85%-1,76013F-HRTimeline
UBS Group AGgroup of 2 filers holding16,259$33.7M-2,008Timeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC14,833$30.8M0.01%-9,11813F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP14,571$30.2M<0.01%-92413F-HRTimelineGroup
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…14,532$30.1M0.01%-35213F-HRTimelineGroup
ENVESTNET ASSET MANAGEMENT INCin group ENVESTNET ASSET MANAGEMENT INC13,838$28.7M0.01%-1,72513F-HRTimelineGroup
Quantinno Capital Management LP12,624$26.2M0.03%+2,84013F-HRTimeline
ELKHORN PARTNERS LIMITED PARTNERSHIPin group ELKHORN PARTNERS LIMITED PART…12,320$25.5M21.89%-38013F-HRTimelineGroup
HORIZON KINETICS ASSET MANAGEMENT LLC12,206$25.3M0.29%-90613F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC12,151$25.2M<0.01%-3,63213F-HRTimelineGroup
BOUSSARD & GAVAUDAN GESTION SAS11,679$24.5M1.24%13F-HRTimeline
VICTORY CAPITAL MANAGEMENT INC10,684$22.2M0.01%-46113F-HRTimeline
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP10,604$22M0.01%+7,54613F-HRTimelineGroup
Qube Research & Technologies Ltd9,673$20.1M0.02%+8,65713F-HRTimeline
SPEECE THORSON CAPITAL GROUP INC9,215$19.1M4.08%-18213F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN8,710$18.1M<0.01%-7213F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp8,412$17.4M<0.01%-3213F-HRTimelineGroup
SEI INVESTMENTS COin group SEI INVESTMENTS CO8,108$16.8M0.01%-2,99013F-HRTimelineGroup
GW&K Investment Management, LLC7,839$16.3M0.13%-8713F-HRTimeline
THOMPSON SIEGEL & WALMSLEY LLC7,656$15.9M0.29%+44713F-HRTimeline
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …7,284$15.1M0.01%+5,37113F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC7,136$14.8M0.01%+4,53313F-HRTimelineGroup
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC6,788$14.1M0.04%+74013F-HRTimeline
ROYCE & ASSOCIATES LP6,781$14.1M0.11%+32113F-HRTimeline
HRT FINANCIAL LP6,760$14M0.03%+4,38513F-HRTimeline
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.6,618$13.7M0.01%-2,29213F-HRTimelineGroup
Edgestream Partners, L.P.6,578$13.6M0.41%+3,44813F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO5,410$11.5M<0.01%+2,84313F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC5,450$11.3M<0.01%-2,28813F-HRTimelineGroup
California Public Employees Retirement …5,248$10.9M0.01%-1,16613F-HRTimeline
Williams Jones Wealth Management, LLC.5,193$10.8M0.12%-113F-HRTimeline
Swiss National Bank4,826$10M0.01%-21013F-HRTimeline
WINMILL & CO. INCin group WINMILL & CO. INC4,800$9.95M2.2%new13F-HRTimelineGroup
Franklin Resourcesgroup of 2 filers holding4,278$8.87M-620Timeline
Phocas Financial Corp.4,078$8.46M1.17%-21413F-HRTimeline
RHUMBLINE ADVISERS3,898$8.08M0.01%-23413F-HRTimeline
Creative Planningin group Creative Planning3,861$8.01M<0.01%-18813F-HRTimelineGroup
Nuveen, LLCin group TIAA3,679$7.63M<0.01%-63013F-HRTimelineGroup
Invesco Ltd.in group Invesco Ltd.3,497$7.25M<0.01%+53013F-HRTimelineGroup
LEE DANNER & BASS INC3,253$6.74M0.39%+5013F-HRTimeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC2,852$5.91M<0.01%-1413F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…2,761$5.72M0.01%-12613F-HR/ATimeline
NEW YORK STATE COMMON RETIREMENT FUND2,532$5.25M0.01%+1913F-HRTimeline
Triad Investment Management2,471$5.12M5.65%-4213F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…2,369$4.91M<0.01%+1,22713F-HRTimelineGroup
STATE BOARD OF ADMINISTRATION OF FLORID…2,351$4.87M0.01%+9013F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/2,335$4.84M<0.01%+12413F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc2,257$4.68M<0.01%-15113F-HRTimelineGroup
Robeco Institutional Asset Management B…in group Robeco Institutional Asset Ma…2,184$4.53M0.01%+513F-HRTimelineGroup
Regency Capital Management Inc.\DE2,146$4.45M1.77%+61113F-HRTimeline
DAVENPORT & Co LLC2,123$4.4M0.02%013F-HRTimeline
BRADLEY FOSTER & SARGENT INC/CT1,899$3.94M0.06%-10313F-HRTimeline
PARSONS CAPITAL MANAGEMENT INC/RI1,887$3.91M0.18%-113F-HRTimeline
Lighthouse Investment Partners, LLCin group Lighthouse Investment Partner…1,868$3.87M0.12%new13F-HRTimelineGroup
Cerity Partners LLCin group Cerity Partners LLC1,797$3.73M<0.01%-7013F-HRTimelineGroup
Atlantic Union Bankshares Corpin group Atlantic Union Bankshares Corp1,765$3.66M0.06%013F-HRTimelineGroup
MML INVESTORS SERVICES, LLC1,741$3.61M0.01%-71813F-HRTimeline
AGF MANAGEMENT LTDin group AGF MANAGEMENT LTD1,696$3.52M0.01%-713F-HRTimelineGroup
XTX Topco Ltdin group XTX Topco Ltd1,644$3.41M0.04%+1,39413F-HRTimelineGroup
Tidal Investments LLCin group Tidal Investments LLC1,578$3.27M0.01%+23013F-HRTimelineGroup
Focus Partners Wealthgroup of 2 filers holding1,553$3.22M+325Timeline
ExodusPoint Capital Management, LP1,443$2.99M0.03%+83213F-HRTimeline
OPPENHEIMER ASSET MANAGEMENT INC.in group OPPENHEIMER ASSET MANAGEMENT …1,356$2.81M0.03%-12413F-HRTimelineGroup
LPL Financial LLC1,318$2.73M<0.01%-7713F-HRTimeline
HighTower Advisors, LLC1,316$2.73M<0.01%-13113F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA1,237$2.57M<0.01%+4213F-HRTimelineGroup
STIFEL FINANCIAL CORPin group STIFEL FINANCIAL CORP1,235$2.56M<0.01%-5913F-HRTimelineGroup
WCM INVESTMENT MANAGEMENT, LLC1,197$2.5M<0.01%-4,79813F-HRTimeline
1834 INVESTMENT ADVISORS CO1,176$2.44M0.28%013F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS1,169$2.42M<0.01%-5,45413F-HRTimelineGroup
Midwest Professional Planners, LTD.1,164$2.41M0.47%+76913F-HRTimeline
PECAUT & CO.1,142$2.37M0.72%-3013F-HRTimeline
Walleye Capital LLCin group Walleye Capital LLC1,130$2.34M0.01%new13F-HRTimelineGroup
Jupiter Topco LLCin group Janus Henderson1,123$2.32M<0.01%13F-HRTimelineGroup
Police & Firemen's Retirement System of…1,112$2.31M0.02%+3013F-HRTimeline
LEUTHOLD GROUP, LLC1,104$2.29M0.23%+5213F-HRTimeline
Autumn Glory Partners, LLC1,080$2.24M0.63%013F-HRTimeline
HARBOR CAPITAL ADVISORS, INC.1,079$2.24M0.15%+4113F-HRTimeline
MERCER GLOBAL ADVISORS INC /ADV1,055$2.19M<0.01%+18913F-HR/ATimeline
Treasurer of the State of North Carolina1,026$2.13M0.01%-3013F-HRTimeline
ALLIANCEBERNSTEIN L.P.944$2.07M<0.01%-913F-HRTimeline
CAPTRUST FINANCIAL ADVISORS927$1.92M<0.01%-30813F-HRTimeline
BRAVE ASSET MANAGEMENT INC924$1.92M0.41%013F-HRTimeline
State of New Jersey Common Pension Fund…in group State of New Jersey Common Pe…914$1.9M0.01%-22113F-HRTimelineGroup
Squarepoint Ops LLCin group Squarepoint Ops LLC905$1.88M<0.01%new13F-HRTimelineGroup
Handelsbanken Fonder AB880$1.82M0.01%013F-HRTimeline
Ethic Inc.860$1.78M0.02%+6013F-HRTimeline
Quadrature Capital Ltdin group Quadrature Capital Ltd859$1.78M0.02%-35413F-HRTimelineGroup
Zurcher Kantonalbank (Zurich Cantonalba…851$1.76M<0.01%-6213F-HRTimeline
O'SHAUGHNESSY ASSET MANAGEMENT, LLC841$1.74M0.01%-16913F-HRTimeline
Summit Trail Advisors, LLC817$1.69M0.02%+5713F-HRTimeline
Sequoia Financial Advisors, LLC810$1.68M0.01%-1413F-HRTimeline
PRIVATE MANAGEMENT GROUP INC806$1.67M0.04%-1713F-HRTimeline
FMR LLCin group FMR LLC786$1.63M<0.01%-11913F-HRTimelineGroup
TEACHERS RETIREMENT SYSTEM OF THE STATE…767$1.59M0.01%013F-HRTimeline
NISA INVESTMENT ADVISORS, LLC754$1.56M<0.01%+1613F-HRTimeline
Farther Finance Advisors, LLC723$1.5M0.01%+6713F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF O…721$1.49M<0.01%-3013F-HRTimeline
TRUIST FINANCIAL CORPin group TRUIST FINANCIAL CORP716$1.48M<0.01%+3213F-HRTimelineGroup
BRANDES INVESTMENT PARTNERS, LPin group BRANDES INVESTMENT PARTNERS, …701$1.45M0.01%+313F-HRTimelineGroup
Texas Yale Capital Corp.687$1.42M0.03%013F-HRTimeline
PARK AVENUE SECURITIES LLCin group PARK AVENUE SECURITIES LLC674$1.4M0.01%-2913F-HRTimelineGroup
ARIZONA STATE RETIREMENT SYSTEM664$1.38M0.01%-3513F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.652$1.35M<0.01%+213F-HRTimelineGroup
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC645$1.34M<0.01%+40813F-HRTimelineGroup
Vident Advisory, LLCin group Vident Advisory, LLC635$1.32M0.01%new13F-HRTimelineGroup
Avior Wealth Management, LLC619$1.28M0.03%+213F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …617$1.28M<0.01%+313F-HRTimelineGroup
Corient Private Wealth LPin group Corient Private Wealth LP611$1.27M<0.01%-78713F-HR/ATimelineGroup
WORLDQUANT MILLENNIUM ADVISORS LLC591$1.23M<0.01%new13F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC583$1.21M<0.01%+4813F-HRTimelineGroup
KLP KAPITALFORVALTNING AS565$1.17M<0.01%013F-HRTimeline
&PARTNERS551$1.14M<0.01%-4713F-HRTimeline
Chicago Partners Investment Group LLC523$1.14M0.02%+5613F-HRTimeline
B.O.S.S. Retirement Advisors, LLC533$1.11M0.3%013F-HRTimeline
Lexington Hill Partners, LLC520$1.08M0.52%013F-HRTimeline
REGIONS FINANCIAL CORPin group REGIONS FINANCIAL CORP517$1.07M0.01%013F-HRTimelineGroup
TD Asset Management Inc512$1.06M<0.01%-42013F-HRTimeline
MIRABELLA FINANCIAL SERVICES LLP495$1.03M0.1%new13F-HRTimeline
CITIGROUP INCin group CITIGROUP INC483$1M<0.01%-91713F-HRTimelineGroup
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…482$999K<0.01%-6413F-HRTimelineGroup
BANK OF MONTREAL /CAN/in group BANK OF MONTREAL /CAN/481$997K<0.01%+4813F-HRTimelineGroup
Sendero Wealth Management, LLC481$997K0.1%-8113F-HRTimeline
Janney Montgomery Scott LLC476$987K<0.01%-3413F-HRTimeline
Parker Investment Management, LLC475$985K0.12%013F-HRTimeline
Jain Global LLC467$968K0.01%+7113F-HRTimeline
Pathstone Holdings, LLCin group Pathstone Holdings, LLC458$950K<0.01%-213F-HRTimelineGroup
Legacy Advisors, LLC448$929K0.09%-213F-HRTimeline
Arax Advisory Partners447$929K0.01%+17213F-HRTimeline
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…433$898K<0.01%+17313F-HRTimelineGroup
ALLSTATE CORPin group ALLSTATE CORP433$898K0.01%-14813F-HRTimelineGroup
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\427$885K<0.01%+17213F-HRTimelineGroup
Amundiin group Amundi425$881K<0.01%-19013F-HRTimelineGroup
Savant Capital, LLC387$826K<0.01%+18813F-HRTimeline
Resona Asset Management Co.,Ltd.in group Resona Asset Management Co.,L…394$817K<0.01%-4913F-HRTimelineGroup
TEACHER RETIREMENT SYSTEM OF TEXAS389$807K<0.01%+22013F-HRTimeline
Sanctuary Advisors, LLC387$803K<0.01%-3113F-HRTimeline
MPS Loria Financial Planners, LLC383$794K0.18%new13F-HRTimeline
KLINGENSTEIN FIELDS & CO LP380$788K0.03%013F-HRTimeline
Pictet Asset Management Holding SAin group Pictet Asset Management Holdi…380$788K<0.01%-5013F-HRTimelineGroup
Storgate, LLC370$767K0.16%+24613F-HRTimeline
Cetera Investment Advisers363$753K<0.01%+1713F-HRTimeline
Aquatic Capital Management LLC361$748K0.03%-55113F-HRTimeline
Roundview Capital LLC358$742K0.04%013F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\354$734K<0.01%+21713F-HRTimelineGroup
Atria Investments, Inc349$724K0.01%+12313F-HRTimeline
Bryant Woods Investment Advisors, LLC340$705K0.2%013F-HRTimeline
GLENMEDE TRUST CO NAin group GLENMEDE TRUST CO NA340$705K<0.01%-1413F-HRTimelineGroup
American Capital Advisory, LLC338$701K0.26%-413F-HRTimeline
Lummis Asset Management, LP325$689K0.41%013F-HRTimeline
Universal- Beteiligungs- und Serviceges…in group Universal- Beteiligungs- und …332$688K<0.01%-7313F-HRTimelineGroup
Legacy Wealth Asset Management, LLC329$682K0.15%+813F-HRTimeline
STATE OF WISCONSIN INVESTMENT BOARD323$670K<0.01%+7713F-HRTimeline
WEALTH ENHANCEMENT ADVISORY SERVICES, L…289$630K<0.01%+11313F-HRTimeline
Brown Miller Wealth Management, LLC298$619K0.16%013F-HRTimeline
ELEVATION POINT WEALTH PARTNERS, LLC294$610K0.01%-313F-HRTimeline
CHOREO, LLC294$610K0.01%-5213F-HRTimeline
BTG Pactual Asset Management US LLCin group BTG Pactual Asset Management …289$599K0.04%new13F-HRTimelineGroup
COMMONWEALTH EQUITY SERVICES, LLC281$583K<0.01%+713F-HRTimeline
Essex Bankin group Essex Financial Services, Inc.275$570K0.12%013F-HRTimelineGroup
SG Americas Securities, LLC266$552K<0.01%+6513F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION…263$545K<0.01%-9013F-HRTimeline
Vestcor Inc255$529K0.01%013F-HRTimeline
OneAscent Financial Services LLCin group OneAscent Financial Services …253$525K0.03%+2513F-HRTimelineGroup
GAMMA Investing LLC249$516K0.02%+4713F-HRTimeline
EQUITABLE TRUST CO242$502K0.02%-58813F-HRTimeline
Cresset Asset Management, LLC241$500K<0.01%-5813F-HRTimeline
Freestone Grove Partners LP240$498K<0.01%new13F-HRTimeline
Shotwell Rutter Baer Inc231$479K0.26%-1113F-HRTimeline
Annis Gardner Whiting Capital Advisors,…228$473K0.07%new13F-HRTimeline
WEDBUSH SECURITIES INC226$469K0.01%-213F-HRTimeline
MEEDER ASSET MANAGEMENT INCin group Meeder Advisory Services, Inc.217$450K0.02%new13F-HRTimelineGroup