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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
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC217$449K<0.01%+12313F-HRTimelineGroup
Vestmark Advisory Solutions, Inc.215$446K<0.01%-813F-HRTimeline
Venturi Wealth Management, LLC213$442K0.02%-3013F-HRTimeline
INCEPTIONR LLC213$442K0.11%new13F-HRTimeline
Hudson Value Partners, LLC206$427K0.11%013F-HRTimeline
PRINCIPAL SECURITIES, INC.in group PRINCIPAL FINANCIAL GROUP INC200$415K<0.01%-1513F-HRTimelineGroup
Ensign Peak Advisors, Inc200$415K<0.01%013F-HRTimeline
Sage Investment Counsel LLC200$415K0.42%013F-HRTimeline
M&T Bank Corpin group M&T Bank Corp199$413K<0.01%+2913F-HRTimelineGroup
FOLGER NOLAN FLEMING DOUGLAS CAPITAL MA…199$413K0.03%013F-HRTimeline
MGO ONE SEVEN LLC193$400K0.01%-1513F-HRTimeline
Wilmington Savings Fund Society, FSB187$388K0.01%013F-HRTimeline
Virtu Financial LLCin group Virtu Financial LLC182$376K0.01%new13F-HRTimelineGroup
Beacon Pointe Advisors, LLC178$369K<0.01%new13F-HRTimeline
Frank, Rimerman Advisors LLC177$367K0.02%-113F-HRTimeline
NICOLET BANKSHARES INCin group NICOLET BANKSHARES INC167$362K0.01%-5613F-HRTimelineGroup
NewEdge Advisors, LLC174$361K<0.01%-1713F-HRTimeline
XPONANCE LLC172$357K<0.01%-1013F-HRTimeline
Swiss Life Asset Management Ltdin group Swiss Life Asset Management L…172$357K<0.01%new13F-HRTimelineGroup
HUB Investment Partners, LLC170$352K0.01%+2013F-HRTimeline
VIRGINIA RETIREMENT SYSTEMS ET Al160$332K<0.01%new13F-HRTimeline
Riverwater Partners LLC158$328K0.1%-2613F-HRTimeline
BANK OF NOVA SCOTIAin group BANK OF NOVA SCOTIA158$328K<0.01%-2013F-HRTimelineGroup
Evelyn Partners Group Ltdin group Evelyn Partners Group Ltd154$319K<0.01%13F-HRTimelineGroup
SYON CAPITAL LLC153$317K0.01%-1113F-HRTimeline
CONNABLE OFFICE INC152$315K0.03%013F-HRTimeline
EVERGREEN CAPITAL MANAGEMENT LLC150$311K0.01%-5213F-HRTimeline
MONETA GROUP INVESTMENT ADVISORS LLC150$311K<0.01%013F-HRTimeline
Douglass Winthrop Advisors, LLC150$311K0.01%013F-HRTimeline
HB Wealth Management, LLC149$309K<0.01%-213F-HRTimeline
AMALGAMATED BANK144$299K<0.01%+1213F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC143$296K<0.01%-24413F-HRTimelineGroup
Kestra Advisory Services, LLCin group Kestra Advisory Services, LLC142$295K<0.01%+2013F-HRTimelineGroup
Sagewood Asset Management LP142$294K0.07%-6213F-HRTimeline
PINNACLE ASSOCIATES LTD129$267K<0.01%+113F-HRTimeline
QUADRANT CAPITAL GROUP LLC129$267K0.01%013F-HRTimeline
RITHOLTZ WEALTH MANAGEMENT126$261K<0.01%-7013F-HR/ATimeline
Utah Retirement Systems126$261K<0.01%-813F-HRTimeline
Columbia Asset Management125$259K0.05%013F-HRTimeline
Kera Capital Partners, Inc.125$259K0.02%013F-HRTimeline
Merit Financial Group, LLC123$255K<0.01%-213F-HR/ATimeline
Numerai GP LLC123$255K0.02%new13F-HRTimeline
State of Alaska, Department of Revenue119$246K<0.01%013F-HRTimeline
EVOLVE PRIVATE WEALTH, LLC116$241K0.01%new13F-HRTimeline
Stratos Wealth Partners, LTD.in group Stratos Wealth Partners, LTD.114$236K<0.01%new13F-HRTimelineGroup
Athena Investment Management114$236K0.14%-11013F-HRTimeline
Quantbot Technologies LP112$232K0.01%+9913F-HRTimeline
HENGEHOLD CAPITAL MANAGEMENT LLC111$230K0.02%-1313F-HRTimeline
One Wealth Advisors, LLC111$230K0.03%013F-HRTimeline
GREAT LAKES ADVISORS, LLC110$228K<0.01%013F-HRTimeline
Perigon Wealth Management, LLC110$228K<0.01%+813F-HRTimeline
Mission Creek Capital Partners, Inc.110$228K0.04%new13F-HRTimeline
Eagle Bay Advisors LLC109$226K0.17%+513F-HRTimeline
DNB Asset Management ASin group DNB Asset Management AS105$218K<0.01%013F-HRTimelineGroup
NewEdge Wealth, LLC104$216K<0.01%-113F-HRTimeline
Empowered Funds, LLC103$214K<0.01%-1,18113F-HRTimeline
Vise Technologies, Inc.101$209K<0.01%+113F-HRTimeline
FIRST MANHATTAN CO. LLC.100$207K<0.01%-1513F-HRTimeline
BALDWIN WEALTH PARTNERS LLC/MA100$207K0.01%013F-HRTimeline
EASTERN BANK100$207K<0.01%013F-HRTimeline
Ballentine Partners, LLC100$207K<0.01%-113F-HRTimeline
CHICAGO TRUST Co NA100$207K0.03%013F-HRTimeline
Gladstone Institutional Advisory LLC100$207K0.01%-113F-HRTimeline
NovaPoint Capital, LLC100$207K0.04%new13F-HRTimeline
Ackerman Asset Management, LLC100$207K0.12%013F-HRTimeline
Citadel Investment Advisory, Inc.100$207K0.09%013F-HRTimeline
EQUITY INVESTMENT CORP99$205K<0.01%013F-HRTimeline
Global Retirement Partners, LLC85$176K<0.01%13F-HRTimeline
STRS OHIO80$166K<0.01%+2113F-HRTimeline
Sterling Capital Management LLC72$149K<0.01%-1113F-HRTimeline
KBC Group NVin group KBC Group NV72$149K<0.01%013F-HRTimelineGroup
SIGNATUREFD, LLC67$139K<0.01%-813F-HRTimeline
Federation des caisses Desjardins du Qu…65$135K<0.01%013F-HRTimeline
Smithfield Trust Co64$132K0.01%013F-HRTimeline
Blue Trust, Inc.62$129K<0.01%-1513F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP60$126K<0.01%+4413F-HRTimelineGroup
Quantum Portfolio Management LLC60$124K0.04%-3613F-HRTimeline
Covestor Ltd58$121K0.07%+5413F-HRTimeline
STEPH & CO58$120K0.03%+913F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…54$112K<0.01%+2913F-HRTimelineGroup
Parallel Advisors, LLC54$112K<0.01%+113F-HRTimeline
Allworth Financial LP45$93.3K<0.01%-813F-HRTimeline
Quent Capital, LLC41$85K0.01%-113F-HRTimeline
VALLEY NATIONAL ADVISERS INC40$82.9K0.01%013F-HRTimeline
NORTHWESTERN MUTUAL WEALTH MANAGEMENT COin group NORTHWESTERN MUTUAL INVESTMEN…40$82.9K<0.01%013F-HRTimelineGroup
MetLife Investment Management, LLCin group MetLife Investment Management…40$82.9K<0.01%-113F-HRTimelineGroup
Davis Capital Management37$76.7K0.05%new13F-HRTimeline
Basecamp Wealth Advisors LLC37$76.7K0.01%-113F-HRTimeline
Steward Partners Investment Advisory, L…36$74.6K<0.01%-1913F-HRTimeline
BNP PARIBAS ASSET MANAGEMENT Holding S.…in group BNP PARIBAS ASSET MANAGEMENT …35$72.6K<0.01%-413F-HRTimelineGroup
WPG Advisers, LLC25$51.8K0.03%-513F-HRTimeline
Versant Capital Management, Inc24$49.8K<0.01%-2513F-HRTimeline
Caitong International Asset Management …23$47.7K0.01%new13F-HRTimeline
NOMURA ASSET MANAGEMENT CO LTDin group NOMURA ASSET MANAGEMENT CO LTD22$45.6K<0.01%013F-HRTimelineGroup
Keating Financial Advisory Services, In…21$43.5K0.01%013F-HRTimeline
FIFTH THIRD BANCORPin group FIFTH THIRD BANK, NATIONAL AS…20$41.5K<0.01%-113F-HRTimelineGroup
Fortitude Family Office, LLC20$41.5K0.01%013F-HRTimeline
Reyes Financial Architecture, Inc.20$41.5K0.02%013F-HRTimeline
DELTA ASSET MANAGEMENT LLC/TN19$39.4K<0.01%013F-HRTimeline
BESSEMER GROUP INCin group BESSEMER GROUP INC19$39K<0.01%013F-HRTimelineGroup
LRI Investments, LLC17$35.2K<0.01%013F-HRTimeline
Smartleaf Asset Management LLC15$31.4K<0.01%013F-HRTimeline
GABLES CAPITAL MANAGEMENT INC.15$31.1K0.01%013F-HRTimeline
PRIVATE TRUST CO NA14$29K<0.01%013F-HRTimeline
Larson Financial Group LLC14$29K<0.01%+1113F-HRTimeline
SJS Investment Consulting Inc.13$27K<0.01%+313F-HRTimeline
Capital Advisors, Ltd. LLC12$25K<0.01%013F-HRTimeline
LOS ANGELES CAPITAL MANAGEMENT LLC12$24.9K<0.01%013F-HRTimeline
TD PRIVATE CLIENT WEALTH LLC12$24.9K<0.01%+113F-HRTimeline
Miller Global Investments, LLC12$24.9K0.02%013F-HRTimeline
HUNTINGTON NATIONAL BANKin group HUNTINGTON NATIONAL BANK11$22.8K<0.01%+313F-HRTimelineGroup
Colonial Trust Co / SCin group Colonial Trust Advisors11$22.8K<0.01%-5013F-HRTimelineGroup
Mitsubishi UFJ Asset Management Co., Lt…in group Mitsubishi UFJ Trust & Bankin…9$18.7K<0.01%013F-HRTimelineGroup
BFSG, LLC9$18.7K<0.01%013F-HRTimeline
CoreFirst Bank & Trust9$18.7K0.01%+213F-HRTimeline
Bell Investment Advisors, Inc8$16.6K<0.01%013F-HRTimeline
BARTLETT & CO. WEALTH MANAGEMENT LLC8$16.6K<0.01%013F-HRTimeline
Private Wealth Asset Management, LLC7$14.5K<0.01%013F-HRTimeline
CENTRAL TRUST Co6$12.4K<0.01%new13F-HRTimeline
JFS WEALTH ADVISORS, LLC6$12.4K<0.01%013F-HRTimeline
1620 INVESTMENT ADVISORS, INC.6$12.4K0.01%013F-HRTimeline
FIDUCIARY FINANCIAL ADVISORS6$12.4K<0.01%new13F-HRTimeline
Clearstead Advisors, LLC5$10.4K<0.01%+113F-HRTimeline
MATHER GROUP, LLC.5$10.4K<0.01%013F-HRTimeline
ASSETMARK, INCin group ASSETMARK, INC4$8.29K<0.01%+213F-HRTimelineGroup
Pinnacle Wealth Planning Services, Inc.4$8.29K<0.01%-213F-HRTimeline
MV CAPITAL MANAGEMENT, INC.3$6.22K<0.01%-113F-HR/ATimeline
ROTHSCHILD INVESTMENT LLC3$6.22K<0.01%-513F-HRTimeline
SouthState Bank Corpin group SouthState Bank Corp3$6.22K<0.01%013F-HRTimelineGroup
TRUST CO OF VERMONT3$6.22K<0.01%13F-HRTimeline
Signature Equity Partners, LLC3$6.22K<0.01%new13F-HRTimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…3$6.22K<0.01%-813F-HRTimelineGroup
TD Capital Management LLC2$4.15K<0.01%013F-HRTimeline
Marquette Asset Management, LLC2$4.15K<0.01%-113F-HRTimeline
Sachetta, LLC2$4.15K<0.01%new13F-HRTimeline
Private Wealth Management Group, LLC2$4.15K<0.01%013F-HRTimeline
Hughes Financial Services, LLC2$4.15K<0.01%new13F-HRTimeline
Integrated Wealth Concepts LLC2$4.15K<0.01%new13F-HRTimeline
True Wealth Design, LLC1$2.07K<0.01%-113F-HRTimeline
ELEVATION WEALTH PARTNERS, LLC1$2.07K<0.01%013F-HRTimeline
Kilter Group LLC1$2.07K<0.01%013F-HRTimeline
MassMutual Private Wealth & Trust, FSB1$2.07K<0.01%new13F-HRTimeline
CVA Family Office, LLC1$2.07K<0.01%-113F-HRTimeline
Creative Capital Management Investments…1$2.07K<0.01%new13F-HRTimeline
Quarry LP1$2.07K<0.01%new13F-HRTimeline
Financial Network Wealth Advisors LLC1$2.07K<0.01%013F-HRTimeline
Whipplewood Advisors, LLC1$2.07K<0.01%-213F-HRTimeline
Burk Holdings LLC1$2.07K<0.01%013F-HRTimeline