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Iron Mountain

1,027 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, 352 reducing their positions, and 61 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more funds holding in top 10

Funds holding in top 10:

more capital invested

Capital invested by funds: $ → $

more funds holding

Funds holding:

2.06% more ownership

Funds ownership: 82.09%84.15% (+2.1%)

10% more repeat investments, than reductions

Existing positions increased: 387 | Existing positions reduced: 352

43% less call options, than puts

Call options by funds: $102M | Put options by funds: $179M

Holders
1,027
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
16
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$102M
Puts
$179M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
VRS
151
Virginia Retirement Systems
Virginia
$12.5M
SIG
152
Sargent Investment Group
Maryland
$12.3M
PI
153
PineBridge Investments
New York
$12.1M
ERSOT
154
Employees Retirement System of Texas
Texas
$12M
CWM
155
CIBC World Markets
New York
$11.9M
Creative Planning
156
Creative Planning
Kansas
$11.8M
LA
157
LBP AM
France
$11.7M
UM
158
UniSuper Management
Australia
$11.5M
HighTower Advisors
159
HighTower Advisors
Illinois
$11.3M
Allspring Global Investments
160
Allspring Global Investments
North Carolina
$11.2M
WAM
161
Weiss Asset Management
Massachusetts
$11.1M
Canada Pension Plan Investment Board
162
Canada Pension Plan Investment Board
Ontario, Canada
$11.1M
BAMCO Inc
163
BAMCO Inc
New York
$11M
Thrivent Financial for Lutherans
164
Thrivent Financial for Lutherans
Minnesota
$11M
AQR Capital Management
165
AQR Capital Management
Connecticut
$10.8M
KK
166
KLP Kapitalforvaltning
Norway
$10.6M
II
167
IFM Investors
Australia
$10.6M
Axa
168
Axa
France
$10.4M
State of Tennessee, Department of Treasury
169
State of Tennessee, Department of Treasury
Tennessee
$10.3M
PAG
170
Private Advisor Group
New Jersey
$10.2M
CC
171
Chicago Capital
Illinois
$10M
SMDAM
172
Sumitomo Mitsui DS Asset Management
Japan
$9.95M
State of New Jersey Common Pension Fund D
173
State of New Jersey Common Pension Fund D
New Jersey
$9.95M
SI
174
Sora Investors
Pennsylvania
$9.84M
GAM
175
Gotham Asset Management
New York
$9.73M