13FBOX
WHITE MTNS INS GROUP LTD · 13F Institutional Holdings
Options Calculator Rankings

WHITE MTNS INS GROUP LTD

WTM
Institutions
357
Combined AUM (Q2 2026)
$4.54B
Combined Shares (Q2 2026)
2.2M
Overall Trend
Decrease
All institutions combined
📥 Inflow (Q1 2026→Q2 2026)
+154,608
135 · 41 New Buys · ≈
📤 Outflow (Q1 2026→Q2 2026)
-284,223
193 · 49 Exit · ≈
⚖️ Net
-129,615
Net Sell
💰 Net Value
≈ —
est. price
Latest AUM (Q2 2026)
$4.54B
Institutions
357
New Buys
41
Adds
94
Reduces
144
Exits
49
Unchanged
78
Ownership TrendPortfolio %Prev Q %RankQ2 2026 ValueQ2 2026 SharesPrev Q ValuePrev Q SharesShares ChangeAction
DIMENSIONAL FUND ADVISORS LP
0.06%0.07%#66$329.6M158,954$344.1M156,618+2,336+1.49%Add
Neuberger Berman Group LLC
0.16%0.21%#40$247.0M119,141$274.0M124,715-5,574-4.47%Reduce
BlackRock, Inc.
<0.01%<0.01%#204$244.4M117,871$249.0M113,328+4,543+4.01%Add
River Road Asset Management, LLC
2.67%3%#6$240.3M115,880$264.8M120,519-4,639-3.85%Reduce
VANGUARD PORTFOLIO MANAGEMENT LLC
0.01%0.01%#130$232.2M111,969$253.9M115,553-3,584-3.10%Reduce
VANGUARD CAPITAL MANAGEMENT LLC
<0.01%0.01%#184$222.8M107,479$239.8M109,157-1,678-1.54%Reduce
FULLER & THALER ASSET MANAGEMENT, INC.
0.58%0.77%#19$211.3M101,892$229.7M104,561-2,669-2.55%Reduce
COOKE & BIELER LP
2.04%2.61%#9$176.5M85,120$230.4M104,857-19,737-18.82%Reduce
Wallace Capital Management Inc.
18.2%19.88%#2$166.0M80,067$173.1M78,795+1,272+1.61%Add
FIDUCIARY MANAGEMENT INC /WI/
1.96%2.38%#10$138.0M66,550$186.9M85,066-18,516-21.77%Reduce
GENDELL JEFFREY L
1.08%1.13%#14$122.8M59,243$83.1M37,814+21,429+56.67%Add
Boston Partners
0.1%0.13%#55$115.3M55,569$126.2M57,459-1,890-3.29%Reduce
LONDON CO OF VIRGINIA
0.64%0.77%#17$112.1M54,025$125.5M57,131-3,106-5.44%Reduce
STATE STREET CORP
<0.01%<0.01%#216$104.2M50,257$108.0M49,158+1,099+2.24%Add
GEODE CAPITAL MANAGEMENT, LLC
0.01%0.01%#171$102.5M49,412$92.6M42,119+7,293+17.32%Add
MORGAN STANLEY
0.01%0.01%#181$97.2M46,866$232.1M138,862-91,996-66.25%Reduce
REINHART PARTNERS, LLC.
2.11%2.36%#8$92.3M44,480$82.1M37,374+7,106+19.01%Add
T. Rowe Price Investment Management, Inc.
0.05%0.06%#70$71.0M34,237$91.2M41,513-7,276-17.53%Reduce
LORD, ABBETT & CO. LLC
0.19%0.24%#36$68.1M32,829$72.7M33,110-281-0.85%Reduce
AMERICAN CENTURY COMPANIES INC
0.03%0.01%#89$64.5M31,108$18.3M8,308+22,800+274.43%Add
NORGES BANK
0.01%0.01%#166$58.0M27,956$59.6M30,970-3,014-9.73%Reduce
Cannell & Spears LLC
1.02%1.21%#15$57.2M27,577$61.6M28,027-450-1.61%Reduce
BANK OF AMERICA CORP /DE/
<0.01%<0.01%#210$51.9M25,028$62.3M28,358-3,330-11.74%Reduce
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
0.01%0.01%#159$48.7M23,505$53.3M24,241-736-3.04%Reduce
Mraz, Amerine & Associates, Inc.
6.61%7.18%#3$46.1M22,218$48.7M22,179+39+0.18%Add
Allspring Global Investments Holdings, LLC
0.06%0.07%#67$37.4M18,116$40.5M18,612-496-2.66%Reduce
Gotham Asset Management, LLC
0.09%0.06%#60$37.2M17,940$19.9M9,047+8,893+98.30%Add
BROWN ADVISORY INC
0.06%0.06%#68$36.7M17,722$39.2M17,844-122-0.68%Reduce
JANE STREET GROUP, LLC
<0.01%<0.01%#217$35.7M17,226$30.3M13,808+3,418+24.75%Add
SOUTHEASTERN ASSET MANAGEMENT INC/TN/
1.85%2.04%#11$35.5M17,104$41.4M18,864-1,760-9.33%Reduce
UBS Group AG
<0.01%<0.01%#193$33.6M16,198$22.9M10,441+5,757+55.14%Add
VANGUARD FIDUCIARY TRUST CO
0.01%0.01%#149$31.8M15,319$33.4M15,186+133+0.88%Add
RAYMOND JAMES FINANCIAL INC
0.01%0.02%#141$30.8M14,833$52.6M23,951-9,118-38.07%Reduce
NORTHERN TRUST CORP
<0.01%<0.01%#206$30.2M14,571$34.0M15,495-924-5.96%Reduce
WELLINGTON MANAGEMENT GROUP LLP
0.01%0.01%#180$30.1M14,532$32.7M14,884-352-2.36%Reduce
ENVESTNET ASSET MANAGEMENT INC
0.01%0.01%#151$28.7M13,838$34.2M15,563-1,725-11.08%Reduce
Quantinno Capital Management LP
0.03%0.04%#83$26.2M12,624$21.5M9,784+2,840+29.03%Add
ELKHORN PARTNERS LIMITED PARTNERSHIP
21.89%17.76%#1$25.5M12,320$27.9M12,700-380-2.99%Reduce
HORIZON KINETICS ASSET MANAGEMENT LLC
0.29%0.31%#28$25.3M12,206$28.8M13,112-906-6.91%Reduce
GOLDMAN SACHS GROUP INC
<0.01%<0.01%#242$25.2M12,151$34.7M15,783-3,632-23.01%Reduce
VICTORY CAPITAL MANAGEMENT INC
0.01%0.02%#122$22.2M10,684$24.5M11,145-461-4.14%Reduce
FIRST TRUST ADVISORS LP
0.01%<0.01%#121$22.0M10,604$6.7M3,058+7,546+246.76%Add
Qube Research & Technologies Ltd
0.02%<0.01%#109$20.1M9,673$2.2M1,016+8,657+852.07%Add
SPEECE THORSON CAPITAL GROUP INC
4.08%4.7%#5$19.1M9,215$20.6M9,397-182-1.94%Reduce
WELLS FARGO & COMPANY/MN
<0.01%<0.01%#220$18.1M8,710$19.3M8,782-72-0.82%Reduce
Bank of New York Mellon Corp
<0.01%<0.01%#223$17.4M8,412$18.6M8,444-32-0.38%Reduce
SEI INVESTMENTS CO
0.01%0.02%#115$16.8M8,108$24.4M11,098-2,990-26.94%Reduce
GW&K Investment Management, LLC
0.13%0.15%#46$16.3M7,839$17.4M7,926-87-1.10%Reduce
THOMPSON SIEGEL & WALMSLEY LLC
0.28%0.28%#29$15.9M7,656$15.8M7,209+447+6.20%Add
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
0.01%<0.01%#152$15.1M7,284$4.2M1,913+5,371+280.76%Add

🧭 Institutional Sector Flow Heatmap

Net Outflow Net Inflow