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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
13.75%
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
1
Principal Financial Group
Iowa
$265M
2
Royal Bank of Canada
2
Royal Bank of Canada
Ontario, Canada
$210M
3
Invesco
3
Invesco
Georgia
$440M
4
Fidelity Investments
4
Fidelity Investments
Massachusetts
$687M
5
CAM
5
Contour Asset Management
New York
$240M

Top Sellers

1
BlackRock
1
BlackRock
New York
$3.21B
2
Citadel Advisors
2
Citadel Advisors
Florida
$14.3M
3
Point72 Asset Management
3
Point72 Asset Management
Connecticut
$104M
4
Qube Research & Technologies (QRT)
4
Qube Research & Technologies (QRT)
United Kingdom
$21.5M
5
Voloridge Investment Management
5
Voloridge Investment Management
Florida
$39.2M
Name Holding Trade Value Shares
Change 		Shares
Change %
VRS
151
Virginia Retirement Systems
Virginia
$12.5M +$3.78M +36,900 +43%
SIG
152
Sargent Investment Group
Maryland
$12.3M +$1.33M +14,804 +12%
PI
153
PineBridge Investments
New York
$12.1M -$2.5M -24,349 -17%
ERSOT
154
Employees Retirement System of Texas
Texas
$12M -$5.64M -55,000 -32%
CWM
155
CIBC World Markets
New York
$11.9M -$190K -1,851 -2%
Creative Planning
156
Creative Planning
Kansas
$11.8M +$813K +7,924 +7%
LA
157
LBP AM
France
$11.7M +$11.7M +114,471 New
UM
158
UniSuper Management
Australia
$11.5M -$131K -1,279 -1%
HighTower Advisors
159
HighTower Advisors
Illinois
$11.3M +$98.9K +964 +0.9%
Allspring Global Investments
160
Allspring Global Investments
North Carolina
$11.2M +$450K +4,508 +4%
WAM
161
Weiss Asset Management
Massachusetts
$11.1M +$11.1M +108,426 New
Canada Pension Plan Investment Board
162
Canada Pension Plan Investment Board
Ontario, Canada
$11.1M -$142K -1,387 -1%
BAMCO Inc
163
BAMCO Inc
New York
$11M +$11M +107,524 New
Thrivent Financial for Lutherans
164
Thrivent Financial for Lutherans
Minnesota
$11M -$2.08M -20,250 -16%
AQR Capital Management
165
AQR Capital Management
Connecticut
$10.8M +$4.15M +40,844 +63%
KK
166
KLP Kapitalforvaltning
Norway
$10.6M +$423K +4,100 +4%
II
167
IFM Investors
Australia
$10.6M -$1.13M -11,039 -10%
Axa
168
Axa
France
$10.4M +$7.73M +75,393 +285%
State of Tennessee, Department of Treasury
169
State of Tennessee, Department of Treasury
Tennessee
$10.3M -$240K -2,336 -2%
PAG
170
Private Advisor Group
New Jersey
$10.2M -$32K -312 -0.3%
CC
171
Chicago Capital
Illinois
$10M -$162K -1,578 -2%
SMDAM
172
Sumitomo Mitsui DS Asset Management
Japan
$9.95M +$210K +2,049 +2%
State of New Jersey Common Pension Fund D
173
State of New Jersey Common Pension Fund D
New Jersey
$9.95M +$27.9K +272 +0.3%
SI
174
Sora Investors
Pennsylvania
$9.84M +$9.84M +95,977 New
GAM
175
Gotham Asset Management
New York
$9.73M +$2.99M +29,144 +44%
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