IRM icon

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 %
ACM
51
AEW Capital Management
Massachusetts
$63.6M 619,677 -49,590 -7%
D.E. Shaw & Co
52
D.E. Shaw & Co
New York
$59.9M 583,977 -233,469 -29%
Millennium Management
53
Millennium Management
New York
$59.1M 575,969 -119,925 -17%
AAMU
54
APG Asset Management US
New York
$58.2M 582,174 – –
AllianceBernstein
55
AllianceBernstein
Tennessee
$57.6M 561,286 -38,428 -6%
Adage Capital Partners
56
Adage Capital Partners
Massachusetts
$57.5M 560,252 +242,200 +76%
Asset Management One
57
Asset Management One
Japan
$57M 555,950 +936 +0.2%
Barclays
58
Barclays
United Kingdom
$55.8M 543,696 -100,350 -16%
Nomura Asset Management
59
Nomura Asset Management
Japan
$53.1M 517,718 +19,609 +4%
ZIG
60
Zurich Insurance Group
Switzerland
$52.7M 513,791 +513,791 New
California Public Employees Retirement System
61
California Public Employees Retirement System
California
$50.7M 493,885 +14,684 +3%
BTCPP
62
Border to Coast Pensions Partnership
United Kingdom
$49.2M 480,000 – –
Universal-Beteiligungs- und Servicegesellschaft
63
Universal-Beteiligungs- und Servicegesellschaft
Germany
$49M 478,180 +110,583 +30%
National Pension Service
64
National Pension Service
South Korea
$48.8M 476,161 +3,240 +0.7%
HRES
65
Heitman Real Estate Securities
Illinois
$47.5M 463,518 -76,519 -14%
SSA
66
Schonfeld Strategic Advisors
New York
$47.5M 463,153 +287,249 +163%
UBS AM
67
UBS AM
Illinois
$46.5M 453,029 +30,606 +7%
California State Teachers Retirement System (CalSTRS)
68
California State Teachers Retirement System (CalSTRS)
California
$46.4M 452,201 +21,277 +5%
Canada Life
69
Canada Life
Manitoba, Canada
$44.9M 437,654 -5,815 -1%
Rockefeller Capital Management
70
Rockefeller Capital Management
New York
$43.9M 378,889 -48,676 -11%
BNP Paribas Financial Markets
71
BNP Paribas Financial Markets
France
$43.8M 426,625 -151,549 -26%
ACM
72
Adelante Capital Management
California
$41.4M 403,205 +12,859 +3%
Raymond James Financial
73
Raymond James Financial
Florida
$40.3M 392,942 +5,662 +1%
Balyasny Asset Management
74
Balyasny Asset Management
Illinois
$39.8M 388,197 -165,351 -30%
Voloridge Investment Management
75
Voloridge Investment Management
Florida
$39.2M 382,076 -358,515 -48%
1 2
3
4 5