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Iron Mountain
IRM

Overview Fund Activity

1,025 hedge funds and large institutions have $25.5B invested in Iron Mountain in 2025 Q2 according to their latest regulatory filings, with 118 funds opening new positions, 387 increasing their positions, 351 reducing their positions, and 61 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
1,025
Holders Change
+43
Holders Change %
+4.38%
% of All Funds
13.74%
Holding in Top 10
16
Holding in Top 10 Change
+6
Holding in Top 10 Change %
+60%
% of All Funds
0.21%
New
118
Increased
387
Reduced
351
Closed
61
Calls
$102M
Puts
$179M
Net Calls
-$77.2M
Net Calls Change
-$30.7M

Top Buyers

1
Principal Financial Group
Principal Financial Group
Iowa
+$172M
2
Royal Bank of Canada
Royal Bank of Canada
Ontario, Canada
+$158M
3
Invesco
Invesco
Georgia
+$148M
4
Fidelity Investments
Fidelity Investments
Massachusetts
+$145M
5
CAM
Contour Asset Management
New York
+$93.1M

Top Sellers

1
BlackRock
BlackRock
New York
-$405M
2
Citadel Advisors
Citadel Advisors
Florida
-$114M
3
Point72 Asset Management
Point72 Asset Management
Connecticut
-$109M
4
Qube Research & Technologies (QRT)
Qube Research & Technologies (QRT)
United Kingdom
-$70.6M
5
Voloridge Investment Management
Voloridge Investment Management
Florida
-$36.8M
Name Holding Trade Value Shares
Change 		Shares
Change %
Voloridge Investment Management
76
Voloridge Investment Management
Florida
$39.2M -$36.8M -358,515 -48%
DZ Bank
77
DZ Bank
Germany
$38.8M +$26.5M +258,003 +215%
GC
78
Gillson Capital
Illinois
$37.9M +$37.9M +369,137 New
Bank of Montreal
79
Bank of Montreal
Ontario, Canada
$37.6M -$5.34M -52,102 -12%
Neuberger Berman Group
80
Neuberger Berman Group
New York
$37.4M +$33.3M +325,110 +823%
Aberdeen Group
81
Aberdeen Group
United Kingdom
$34.8M +$3.18M +31,017 +10%
MHIC
82
Marble Harbor Investment Counsel
Massachusetts
$33.7M -$494K -4,815 -1%
AHC
83
Adell Harriman & Carpenter
Texas
$33.3M +$253K +2,466 +0.8%
Swedbank
84
Swedbank
Sweden
$32.3M +$1.23M +12,030 +4%
William Blair & Company
85
William Blair & Company
Illinois
$32.2M -$1.68M -16,408 -5%
State Board of Administration of Florida Retirement System
86
State Board of Administration of Florida Retirement System
Florida
$30.4M +$634K +6,180 +2%
Macquarie Group
87
Macquarie Group
Australia
$29.6M +$588K +5,728 +2%
Korea Investment Corp
88
Korea Investment Corp
South Korea
$28.3M -$6.11M -59,600 -18%
WorldQuant Millennium Advisors
89
WorldQuant Millennium Advisors
New York
$27.5M +$736K +7,176 +3%
RFC
90
Regions Financial Corp
Alabama
$25.5M +$719K +7,010 +3%
AAF
91
Andra AP-fonden
Sweden
$25.2M -$2.96M -28,900 -11%
Victory Capital Management
92
Victory Capital Management
Texas
$23.8M +$15M +146,108 +170%
Retirement Systems of Alabama
93
Retirement Systems of Alabama
Alabama
$23.7M -$77.6K -757 -0.3%
Aviva
94
Aviva
United Kingdom
$23.4M -$12.9M -125,947 -36%
New York State Teachers Retirement System (NYSTRS)
95
New York State Teachers Retirement System (NYSTRS)
New York
$23.4M +$19.1K +186 +0.1%
National Bank of Canada
96
National Bank of Canada
Quebec, Canada
$23.3M -$1.26M -12,287 -5%
SO
97
STRS Ohio
Ohio
$23M +$3.47M +33,812 +18%
Corient Private Wealth
98
Corient Private Wealth
Florida
$22.6M -$325K -3,170 -1%
Pacer Advisors
99
Pacer Advisors
Pennsylvania
$22.6M -$2.48M -24,203 -10%
Stifel Financial
100
Stifel Financial
Missouri
$22.1M +$1.03M +10,064 +5%
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