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Iron Mountain
IRM

Overview Fund Activity

1,018 hedge funds and large institutions have $25.4B invested in Iron Mountain in 2025 Q2 according to their latest regulatory filings, with 117 funds opening new positions, 383 increasing their positions, 349 reducing their positions, and 61 closing their positions.

Holders
1,018
Holders Change
+36
Holders Change %
+3.67%
% of All Funds
13.67%
Holding in Top 10
16
Holding in Top 10 Change
+6
Holding in Top 10 Change %
+60%
% of All Funds
0.21%
New
117
Increased
383
Reduced
349
Closed
61
Calls
$76.7M
Puts
$138M
Net Calls
-$60.9M
Net Calls Change
-$14.4M

Top Buyers

1
Norges Bank
1
Norges Bank
Norway
$419M
2
Principal Financial Group
2
Principal Financial Group
Iowa
$265M
3
Royal Bank of Canada
3
Royal Bank of Canada
Ontario, Canada
$210M
4
Invesco
4
Invesco
Georgia
$440M
5
Fidelity Investments
5
Fidelity Investments
Massachusetts
$687M

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 Market Value Shares Shares
Change 		Shares
Change %
Vanguard Group
1
Vanguard Group
Pennsylvania
$4.83B 47,064,887 +239,153 +0.5%
BlackRock
2
BlackRock
New York
$3.21B 31,278,627 -3,944,152 -11%
State Street
3
State Street
Massachusetts
$1.74B 16,809,643 +104,524 +0.6%
Cohen & Steers
4
Cohen & Steers
New York
$1.41B 13,768,631 +286,729 +2%
Geode Capital Management
5
Geode Capital Management
Massachusetts
$826M 8,086,718 -196,665 -2%
Fidelity Investments
6
Fidelity Investments
Massachusetts
$687M 6,697,419 +1,410,684 +27%
Dimensional Fund Advisors
7
Dimensional Fund Advisors
Texas
$440M 4,292,766 +36,349 +0.9%
Invesco
8
Invesco
Georgia
$440M 4,289,583 +1,440,629 +51%
Norges Bank
9
Norges Bank
Norway
$419M 4,089,466 +4,089,466 New
Northern Trust
10
Northern Trust
Illinois
$417M 4,067,808 -199,516 -5%
Charles Schwab
11
Charles Schwab
California
$372M 3,625,808 +138,329 +4%
Morgan Stanley
12
Morgan Stanley
New York
$360M 3,506,483 +117,444 +3%
Deutsche Bank
13
Deutsche Bank
Germany
$352M 3,429,481 +284,654 +9%
Legal & General Group
14
Legal & General Group
United Kingdom
$337M 3,283,276 +99,278 +3%
Daiwa Securities Group
15
Daiwa Securities Group
Japan
$303M 2,954,927 +202,460 +7%
Principal Financial Group
16
Principal Financial Group
Iowa
$265M 2,584,856 +1,680,672 +186%
Pictet Asset Management
17
Pictet Asset Management
Switzerland
$254M 2,475,671 -926 -0%
CAM
18
Contour Asset Management
New York
$240M 2,335,348 +908,098 +64%
Capital World Investors
19
Capital World Investors
California
$217M 2,117,169 – –
NL
20
Nuveen LLC
North Carolina
$211M 2,054,789 -179,411 -8%
Royal Bank of Canada
21
Royal Bank of Canada
Ontario, Canada
$210M 2,042,795 +1,544,866 +310%
CIM
22
Centersquare Investment Management
Pennsylvania
$208M 2,030,916 +22,479 +1%
JPMorgan Chase & Co
23
JPMorgan Chase & Co
New York
$202M 1,972,998 -88,562 -4%
Prudential Financial
24
Prudential Financial
New Jersey
$200M 1,945,769 +601,290 +45%
Goldman Sachs
25
Goldman Sachs
New York
$193M 1,879,971 -94,951 -5%
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