White Mountains Insurance GPWTM

13F holders, Q1 2024 (March 31)
303holders
4famous investors
$1793.36avg. 13F price*

At the end of Q1 2024, 303 institutions reported holding White Mountains Insurance GP (WTM) in their 13F filings. The largest holders were Vanguard Group Inc. ($452.0M), Morgan Stanley ($332.9M) and Dimensional Fund Advisors LP ($290.5M). 4 famous investors held it, including Cliff Asness (0.0% of AQR Capital Management's portfolio), David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio) and Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio).

Company
White Mountains Insurance GP
CUSIP
G9618E107
Latest filing quarter
Q2 2026

History

Number of 13F holders

0100200300400 Q1 2024: 303Q1 2024Q2 2024: 306Q2 2024Q3 2024: 304Q3 2024Q4 2024: 324Q4 2024Q1 2025: 322Q1 2025Q2 2025: 325Q2 2025Q3 2025: 338Q3 2025Q4 2025: 353Q4 2025Q1 2026: 368Q1 2026Q2 2026: 356Q2 2026

Total Exit/New Position Q1 2024

InstitutionsTotal Value
New Positions37$68.3M
Exits27$17.9M

Ownership 303 holders

Vanguard Group Inc. 0.01% Reduce -0.6% 251,930 $452.0M
Morgan Stanley 0.03% Reduce -6.3% 185,530 $332.9M
Dimensional Fund Advisors LP 0.08% Reduce -0.0% 161,918 $290.5M
Fuller & Thaler Asset Management, Inc. 1.02% Add +1.1% 130,914 $234.9M
River Road Asset Management, LLC 2.99% Reduce -3.0% 123,321 $221.3M
BlackRock Inc. 0.00% Add +2.0% 114,973 $206.3M
Boston Partners 0.19% Reduce -2.1% 90,594 $162.4M
Wallace Capital Management Inc. 20.09% Reduce -2.5% 82,077 $147.3M
London Co. of Virginia 0.63% Add +5.5% 66,595 $119.5M
Wellington Management Group LLP 0.02% Reduce -9.5% 61,006 $109.5M
T. Rowe Price Investment Management, Inc. 0.07% Add +0.2% 59,289 $106.4M
Select Equity Group, L.P. 0.32% Add +66.0% 49,931 $89.6M
State Street Corp. 0.00% Reduce -3.2% 48,620 $87.2M
Bank of America Corp. 0.01% Add +2.5% 40,730 $73.1M
Fiduciary Management Inc. 0.62% Add +2.7% 38,995 $70.0M
Geode Capital Management, LLC 0.01% Add +3.1% 38,899 $69.8M
Reinhart Partners, Llc. 2.79% Add +1.1% 38,225 $68.6M
Cannell & Spears LLC 1.12% New 30,236 $54.3M
Robeco Institutional Asset Management B.V. 0.12% Reduce -0.6% 29,623 $53.2M
Norges Bank 0.01% Add +4.6% 29,550 $53.0M
Lord, Abbett & Co. LLC 0.17% Add +16.0% 28,472 $51.1M
Charles Schwab Investment Management Inc. 0.01% Add +1.3% 24,829 $44.6M
Southeastern Asset Management Inc. 1.70% Reduce -23.9% 24,708 $44.3M
Raymond James & Associates 0.03% Reduce -0.1% 23,337 $41.9M
Brown Advisory Inc. 0.06% Add +40.7% 23,121 $41.5M
Mraz, Amerine & Associates, Inc. 7.31% Reduce -2.0% 21,540 $38.6M
American Century Companies Inc. 0.02% Add +40.0% 20,791 $37.3M
Scout Investments, Inc. 0.72% Reduce -8.4% 16,535 $29.3M
Elkhorn Partners Limited Partnership 20.97% Reduce -9.1% 16,200 $29.1M
Royce & Associates LP 0.26% Reduce -10.0% 16,142 $29.0M
Thompson Siegel & Walmsley LLC 0.44% Add +0.4% 15,865 $28.5M
FMR LLC 0.00% Add +22.5% 14,919 $26.8M
Northern Trust Corp. 0.00% Reduce -3.5% 14,596 $26.2M
Envestnet Asset Management Inc. 0.01% Add +4.3% 14,256 $25.6M
Victory Capital Management Inc. 0.03% Reduce -22.3% 14,251 $25.6M
Perpetual Ltd 0.25% Add +0.7% 14,076 $25.4M
California Public Employees Retirement System 0.02% No change 14,078 $25.3M
Allspring Global Investments Holdings, LLC 0.04% Add +20.9% 13,839 $24.8M
Speece Thorson Capital Group Inc. 4.77% Add +5.8% 13,751 $24.7M
Wells Fargo & Company 0.01% Reduce -2.8% 11,509 $20.7M
Cove Street Capital, LLC 5.71% Reduce -5.7% 10,057 $18.0M
Bank of New York Mellon Corp 0.00% Reduce -10.8% 9,938 $17.8M
AQR Capital Management 0.03% Add +0.6% 9,152 $16.4M
First Trust Advisors LP 0.01% Add +61.6% 7,473 $13.4M
GW&K Investment Management, LLC 0.11% Reduce -1.7% 6,908 $12.4M
Hotchkis & Wiley Capital Management LLC 0.04% Reduce -12.7% 6,700 $12.0M
Alaska Permanent Fund Corp 0.16% Add +4.2% 5,897 $10.6M
Nuveen Asset Management, LLC 0.00% Reduce -0.8% 5,325 $9.6M
Williams Jones Wealth Management, LLC. 0.12% Reduce -2.8% 5,193 $9.3M
Swiss National Bank 0.01% No change 5,046 $9.1M
Rhumbline Advisers 0.01% Reduce -6.8% 4,823 $8.7M
Credit Suisse AG/ 0.01% Add +2.1% 4,593 $8.2M
Brandywine Global Investment Management, LLC 0.06% Reduce -0.8% 4,506 $8.1M
Legal & General Group Plc 0.00% Reduce -8.4% 4,371 $7.8M
Invesco Ltd. 0.00% Reduce -29.9% 4,318 $7.7M
Eagle Asset Management Inc. 0.04% Reduce -7.3% 4,341 $7.7M
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% Add +1.0% 3,819 $6.9M
D. E. Shaw & Co. 0.01% Reduce -7.9% 3,730 $6.7M
Ameriprise Financial Inc. 0.00% Reduce -7.2% 3,630 $6.5M
Prospector Partners LLC 0.69% Add +0.8% 3,293 $5.9M
Martingale Asset Management L P 0.12% Reduce -17.8% 3,255 $5.8M
JPMorgan Chase & Co. 0.00% Add +7.0% 3,105 $5.6M
Dean Investment Associates, LLC 0.64% Reduce -0.8% 2,606 $4.7M
New York State Common Retirement Fund 0.01% Reduce -16.3% 2,582 $4.6M
California State Teachers Retirement System 0.01% Reduce -5.2% 2,554 $4.6M
Sei Investments Co. 0.01% Add +19.5% 2,418 $4.3M
Renaissance Technologies 0.01% Reduce -22.6% 2,400 $4.3M
State Board of Administration of Florida Retirement System 0.01% Reduce -29.3% 3,070 $4.2M
Creative Planning 0.00% Add +22.3% 2,328 $4.2M
DAVENPORT & Co LLC 0.02% No change 2,188 $3.9M
Goldman Sachs Group Inc. 0.00% Reduce -49.3% 1,848 $3.3M
Truist Financial Corp. 0.00% Add +4.1% 1,817 $3.3M
Triad Investment Management 3.88% Add +1.0% 1,783 $3.2M
UBS Group AG 0.00% Add +8.0% 1,764 $3.2M
Royal Bank of Canada 0.00% Add +1.6% 1,740 $3.1M
Vident Advisory, LLC 0.06% Reduce -4.4% 1,675 $3.0M
State of New Jersey Common Pension Fund D 0.01% No change 1,661 $3.0M
Stifel Financial Corp. 0.00% Reduce -1.9% 1,637 $2.9M
Cerity Partners LLC 0.01% Add +5.2% 1,605 $2.9M
Qube Research & Technologies Ltd 0.01% Reduce -15.0% 1,569 $2.8M
Man Group plc 0.01% Add +175.9% 1,509 $2.7M
STRS Ohio 0.01% Reduce -23.0% 1,467 $2.6M
MML Investors Services, LLC 0.01% Add +21.8% 1,465 $2.6M
Oppenheimer Asset Management Inc. 0.04% Reduce -4.2% 1,405 $2.5M
T. Rowe Price Associates Inc. 0.00% Reduce -3.4% 1,316 $2.4M
Allianz Asset Management GmbH 0.00% Reduce -29.3% 1,305 $2.3M
TD Asset Management Inc 0.00% No change 1,300 $2.3M
Treasurer of the State of North Carolina 0.01% Add +0.8% 1,250 $2.2M
Quantinno Capital Management LP 0.05% Add +8.4% 1,246 $2.2M
Janus Henderson Group PLC 0.00% No change 1,235 $2.2M
Alliancebernstein L.P. 0.00% Reduce -0.4% 1,231 $2.2M
Forum Financial Management, LP 0.04% No change 1,198 $2.1M
1834 Investment Advisors Co. 0.25% No change 1,176 $2.1M
Pecaut & Co. 0.78% No change 1,167 $2.1M
Parsons Capital Management Inc. 0.14% Add +28.1% 1,141 $2.0M
Nisa Investment Advisors, LLC 0.01% No change 1,100 $2.0M
Agf Management Ltd. 0.01% Reduce -50.6% 1,088 $2.0M
Autumn Glory Partners, LLC 0.95% No change 1,080 $1.9M
LPL Financial LLC 0.00% Add +2.7% 1,055 $1.9M
O'shaughnessy Asset Management, LLC 0.02% Add +0.7% 1,038 $1.9M
Neuberger Berman Group LLC 0.00% Reduce -0.5% 1,014 $1.8M
Barclays PLC 0.00% Reduce -5.5% 1,007 $1.8M
Ensign Peak Advisors, Inc 0.00% Reduce -4.8% 1,000 $1.8M
Main Street Financial Solutions, LLC 0.19% Reduce -2.0% 992 $1.8M
Public Employees Retirement System of Ohio 0.01% Reduce -8.5% 987 $1.8M
Sutton Place Investors LLC 0.82% New 929 $1.7M
Brave Asset Management Inc. 0.43% No change 929 $1.7M
Two Sigma Investments, LP 0.00% Add +118.5% 922 $1.7M
Corient Private Wealth LP 0.00% Reduce -14.0% 906 $1.6M
SYSTM Wealth Solutions LLC 0.20% Reduce -2.2% 896 $1.6M
Dean Capital Management 0.93% Add +0.2% 890 $1.6M
Legato Capital Management LLC 0.19% Add +0.2% 890 $1.6M
Lighthouse Investment Partners, LLC 0.08% New 786 $1.4M
Arizona State Retirement System 0.01% Reduce -1.7% 704 $1.3M
Millennium Management 0.00% Add +154.4% 692 $1.2M
Karpas Strategies, LLC 0.37% No change 659 $1.2M
King Luther Capital Management Corp. 0.01% New 650 $1.2M
Gratus Capital, LLC 0.05% No change 608 $1.1M
Citigroup Inc. 0.00% Add +16.3% 598 $1.1M
Lazard Asset Management LLC 0.00% Reduce -84.4% 577 $1.0M
First Hawaiian Bank 0.03% No change 572 $1.0M
AMG National Trust Bank 0.03% Reduce -0.2% 568 $1.0M
Jane Street Group, LLC 0.00% New 557 $999K
Raymond James Financial Services Advisors, Inc. 0.00% Add +22.5% 556 $998K
Buckingham Strategic Wealth, LLC 0.01% New 556 $998K
Parker Investment Management, LLC 0.17% No change 550 $987K
Regions Financial Corp. 0.01% No change 550 $987K
Algert Global LLC 0.04% No change 542 $973K
Park Avenue Securities LLC 0.01% Add +0.4% 527 $946K
Captrust Financial Advisors 0.00% Reduce -36.2% 527 $946K
QRG Capital Management, Inc. 0.01% Reduce -1.7% 514 $922K
Manufacturers Life Insurance Company, The 0.00% Add +6.0% 513 $920K
Ethic Inc. 0.02% Add +8.6% 504 $904K
Resona Asset Management Co.,Ltd. 0.01% — 490 $879K
Mariner, LLC 0.00% Add +23.2% 483 $867K
Aviva PLC 0.00% New 482 $865K
Teacher Retirement System of Texas 0.01% Reduce -19.5% 480 $861K
Tidal Investments LLC 0.01% New 479 $859K
Cresset Asset Management, LLC 0.00% Add +8.3% 446 $800K
Bank of Montreal 0.00% Reduce -0.2% 429 $790K
Glenmede Trust Co. NA 0.00% Add +7.3% 439 $788K
Chicago Partners Investment Group LLC 0.03% No change 451 $776K
Walleye Capital LLC 0.01% Add +82.7% 411 $737K
PNC Financial Services Group, Inc. 0.00% Add +0.3% 400 $718K
Public Employees Retirement Association of Colorado 0.00% No change 392 $703K
Klingenstein Fields & Co. LP 0.03% No change 391 $702K
Roundview Capital LLC 0.06% Reduce -5.1% 375 $673K
Mitsubishi UFJ Trust & Banking Corp 0.00% Reduce -10.3% 374 $662K
Osaic Holdings, Inc. 0.00% Reduce -66.8% 363 $651K
Kathleen S. Wright Associates Inc. 0.30% No change 380 $641K
Russell Investments Group, Ltd. 0.00% Add +2125.0% 356 $639K
Bryant Woods Investment Advisors, LLC 0.36% No change 340 $610K
Pictet Asset Management Holding SA 0.00% Add +9.3% 328 $589K
Dark Forest Capital Management LP 0.10% Add +14.4% 325 $583K
Pathstone Holdings, LLC 0.00% Add +19.3% 322 $578K
Envestnet Portfolio Solutions, Inc. 0.00% Add +24.5% 315 $565K
State of Wisconsin Investment Board 0.00% Reduce -11.3% 315 $565K
Harbor Capital Advisors, Inc. 0.07% New 312 $560K
Hyman Charles D 0.03% No change 305 $547K
American Capital Advisory, LLC 0.47% No change 390 $537K
Brown Miller Wealth Management, LLC 0.24% No change 298 $535K
Voya Investment Management LLC 0.00% Reduce -4.5% 297 $533K
Shotwell Rutter Baer Inc 1.06% Reduce -31.5% 300 $522K
Commonwealth Equity Services, LLC 0.00% Reduce -0.7% 288 $517K
Legacy Wealth Asset Management, LLC 0.14% Add +1.1% 284 $510K
Los Angeles Capital Management LLC 0.00% Reduce -1.1% 282 $506K
Highlander Partners, L.P. 0.35% No change 280 $502K
Ritholtz Wealth Management 0.02% Add +4.7% 266 $477K
Brandes Investment Partners, LP 0.01% Add +63.5% 255 $458K
Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% No change 253 $454K
Ground Swell Capital, LLC 0.47% New 251 $450K
Keybank National Association 0.00% Reduce -3.2% 241 $432K
Essex Bank 0.12% No change 284 $427K
Athena Investment Management 0.25% No change 234 $420K
US Bancorp \de 0.00% Add +15.1% 229 $411K
Prudential Financial Inc. 0.00% Add +3.2% 226 $406K
Equitable Trust Co. 0.03% Add +3.2% 223 $400K
Opal Wealth Advisors, LLC 0.14% Reduce -0.5% 222 $398K
Vestcor Inc 0.01% Add +26.6% 219 $393K
Principal Financial Group Inc. 0.00% Add +43.0% 216 $388K
Private Advisor Group, LLC 0.00% Reduce -0.9% 213 $382K
One Wealth Advisors, LLC 0.07% Add +0.5% 209 $375K
Hudson Value Partners, LLC 0.16% No change 206 $370K
Vanguard Personalized Indexing Management, LLC 0.01% Add +5.8% 202 $362K
HighTower Advisors, LLC 0.00% Add +10.5% 200 $360K
Nkcfo LLC 0.21% New 200 $359K
Neville Rodie & Shaw Inc. 0.03% No change 200 $359K
Evercore Wealth Management, LLC 0.01% No change 200 $359K
New York Life Investment Management LLC 0.00% New 200 $359K
Folger Nolan Fleming Douglas Capital Management, Inc. 0.04% No change 199 $357K
Sequoia Financial Advisors, LLC 0.00% Reduce -62.9% 195 $350K
Bank of Nova Scotia 0.00% Reduce -24.4% 192 $345K
Franklin Resources Inc. 0.00% New 191 $343K
Connable Office Inc. 0.04% Reduce -5.9% 190 $341K
Sendero Wealth Management, LLC 0.06% No change 188 $337K
Johnson Investment Counsel Inc. 0.00% Reduce -21.3% 185 $332K
Cetera Investment Advisers 0.00% New 178 $319K
Pinnacle Associates Ltd. 0.01% No change 177 $318K
Hengehold Capital Management LLC 0.03% Add +21.3% 171 $307K
Summit Trail Advisors, LLC 0.01% Reduce -1.2% 169 $303K
Arax Advisory Partners 0.03% Reduce -4.0% 166 $299K
Isthmus Partners, LLC 0.03% No change 164 $294K
Cubist Systematic Strategies, LLC 0.00% New 164 $294K
Councilor Wealth, LLC 0.14% No change 155 $278K
BNP Paribas Financial Markets 0.00% Add +34.2% 153 $275K
Empower Advisory Group, LLC 0.00% No change 151 $271K
Susquehanna International Group, LLP 0.00% Reduce -16.1% 151 $271K
Outfitters Financial LLC 0.22% No change 150 $269K
Tower Research Capital LLC (TRC) 0.01% Reduce -3.9% 150 $269K
Moneta Group Investment Advisors LLC 0.00% No change 150 $269K
Chapman Investment Management, LLC 0.19% No change 143 $257K
Janney Montgomery Scott LLC 0.00% New 142 $255K
Deutsche Bank AG 0.00% Add +14.5% 142 $255K
New York State Teachers Retirement System 0.00% No change 141 $253K
CM Wealth Advisors LLC 0.07% New 136 $253K
Raymond James Trust N.A. 0.01% Reduce -2.8% 139 $249K
B. Riley Wealth Advisors, Inc. 0.01% New 166 $248K
Amalgamated Bank 0.00% Reduce -66.2% 138 $248K
Farther Finance Advisors, LLC 0.02% Add +2.2% 140 $248K
Wealth Enhancement Advisory Services, LLC 0.00% Reduce -8.8% 135 $242K
Pitcairn Co. 0.02% Reduce -5.6% 134 $240K
Utah Retirement Systems 0.00% No change 134 $240K
Glenview Trust Co 0.01% New 133 $239K
New Potomac Partners, LLC 0.13% Reduce -7.1% 130 $233K
Intech Investment Management LLC 0.00% New 128 $230K
Oppenheimer & Close, LLC 0.19% New 125 $224K
Lindbrook Capital, LLC 0.02% Reduce -6.1% 124 $222K
Savant Capital, LLC 0.00% New 122 $219K
Principal Securities, Inc. 0.01% Add +15.1% 122 $219K
Equity Investment Corp. 0.01% New 122 $219K
Verition Fund Management LLC 0.00% Reduce -58.4% 121 $217K
M&T Bank Corp 0.00% New 121 $217K
Avantax Advisory Services, Inc. 0.00% New 117 $210K
HB Wealth Management, LLC 0.00% New 116 $208K
Lincoln National Corp. 0.00% New 115 $206K
Townsquare Capital LLC 0.00% New 115 $206K
Baldwin Wealth Partners LLC 0.01% No change 100 $179K
CENTRAL TRUST Co 0.00% No change 100 $179K
Smithfield Trust Co 0.01% No change 97 $173K
Bessemer Group Inc. 0.00% Reduce -15.8% 85 $153K
Headlands Technologies LLC 0.03% New 80 $144K
Steward Partners Investment Advisory, LLC 0.00% No change 75 $135K
Global Assets Advisory, LLC 0.08% New 76 $135K
Quent Capital, LLC 0.02% Reduce -2.7% 73 $131K
KBC Group NV 0.00% Add +28.0% 64 $115K
Colonial Trust Co / SC 0.02% No change 61 $109K
Signaturefd, LLC 0.00% Add +8.9% 61 $109K
Parkside Financial Bank & Trust 0.02% Add +19.1% 56 $100K
Point72 (DIFC) Ltd 0.01% — 51 $92K
Anchor Investment Management, LLC 0.01% No change 50 $90K
MetLife Investment Management, LLC 0.00% No change 49 $88K
First Manhattan Co. Llc. 0.00% Reduce -17.9% 46 $83K
First Horizon Advisors, Inc. 0.00% Add +21.6% 45 $81K
Federation des caisses Desjardins du Quebec 0.00% Add +33.3% 40 $72K
Valley National Advisers Inc. 0.01% No change 40 $71K
Avior Wealth Management, LLC 0.00% New 37 $66K
Parallel Advisors, LLC 0.00% Add +250.0% 35 $63K
EntryPoint Capital, LLC 0.05% Add +13.3% 34 $61K
Community Bank, N.A. 0.01% No change 34 $61K
Quadrant Capital Group LLC 0.00% No change 33 $59K
TD Private Client Wealth LLC 0.00% Reduce -42.1% 33 $59K
Blue Trust, Inc. 0.00% Add +6.9% 31 $56K
Venturi Wealth Management, LLC 0.00% No change 30 $54K
Northwestern Mutual Wealth Management Co. 0.00% Add +86.7% 28 $50K
Cwm, LLC 0.00% Add +107.7% 27 $48K
Centerpoint Advisors, LLC 0.02% No change 25 $45K
CIBC Private Wealth Group LLC 0.00% New 24 $42K
RFP Financial Group LLC 0.02% No change 22 $39K
GAMMA Investing LLC 0.01% No change 21 $38K
UMB Bank, n.a. 0.00% Add +53.9% 20 $36K
American International Group, Inc. 0.00% No change 20 $36K
Delta Asset Management LLC 0.00% No change 19 $34K
Montag A & Associates Inc. 0.00% No change 19 $34K
Allworth Financial LP 0.00% Reduce -5.9% 16 $29K
Point72 Asia (Singapore) Pte. Ltd. 0.01% New 15 $27K
Capital Advisors, Ltd. LLC 0.00% Add +20.0% 12 $22K
Nomura Asset Management Co. Ltd. 0.00% No change 12 $22K
Huntington National Bank 0.00% Add +10.0% 11 $20K
NewEdge Advisors, LLC 0.00% No change 11 $20K
Mitsubishi UFJ Asset Management Co., Ltd. 0.00% Add +350.0% 9 $16K
EverSource Wealth Advisors, LLC 0.00% No change 9 $16K
Wetzel Investment Advisors, Inc. 0.01% No change 9 $16K
Raleigh Capital Management Inc. 0.01% No change 8 $14K
Bell Investment Advisors, Inc 0.00% No change 8 $14K
Redmont Wealth Advisors LLC 0.02% New 8 $14K
Atlas Capital Advisors Inc. 0.00% No change 8 $14K
Bartlett & Co. Wealth Management LLC 0.00% No change 8 $14K
Concourse Financial Group Securities, Inc. 0.00% Reduce -12.5% 7 $13K
Lanark Financial, Inc. 0.00% No change 7 $12K
Covestor Ltd 0.01% No change 6 $11K
Private Trust Co. NA 0.00% Reduce -16.7% 5 $9K
JFS Wealth Advisors, LLC 0.00% No change 5 $9K
Sachetta, LLC 0.00% No change 5 $8K
Frazier Financial Advisors, LLC 0.01% Add +33.3% 4 $7K
Hexagon Capital Partners LLC 0.00% New 4 $7K
Private Wealth Management Group, LLC 0.00% No change 2 $4K
TD Capital Management LLC 0.00% New 2 $4K
Smartleaf Asset Management LLC 0.00% New 1 $2K
SJS Investment Consulting Inc. 0.00% Reduce -50.0% 1 $2K
English Capital Management LLC 0.00% No change 1 $2K
Versant Capital Management, Inc 0.00% No change 1 $2K
IFP Advisors, Inc 0.00% No change 1 $2K
Fifth Third Bancorp 0.00% No change 1 $2K

"% of holder's portfolio" is WTM's weight in each manager's 13F, not the share of White Mountains Insurance GP the manager owns.