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Iron Mountain
IRM

Overview Fund Activity

982 hedge funds and large institutions have $20.7B invested in Iron Mountain in 2025 Q1 according to their latest regulatory filings, with 89 funds opening new positions, 342 increasing their positions, 396 reducing their positions, and 142 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
982
Holders Change
-70
Holders Change %
-6.65%
% of All Funds
13.34%
Holding in Top 10
10
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-9.09%
% of All Funds
0.14%
New
89
Increased
342
Reduced
396
Closed
142
Calls
$151M
Puts
$197M
Net Calls
-$46.5M
Net Calls Change
-$48.9M

Top Buyers

1
Fidelity Investments
Fidelity Investments
Massachusetts
+$397M
2
BlackRock
BlackRock
New York
+$271M
3
CAM
Contour Asset Management
New York
+$123M
4
Goldman Sachs
Goldman Sachs
New York
+$78.6M
5
Point72 Asset Management
Point72 Asset Management
Connecticut
+$75.3M

Top Sellers

1
AM
AGF Management
Ontario, Canada
-$224M
2
TD Asset Management
TD Asset Management
Ontario, Canada
-$151M
3
Capital World Investors
Capital World Investors
California
-$146M
4
Cohen & Steers
Cohen & Steers
New York
-$123M
5
Wellington Management Group
Wellington Management Group
Massachusetts
-$41.3M
Name Holding Trade Value Shares
Change 		Shares
Change %
Twin Tree Management
1001
Twin Tree Management
Texas
– -$2.1M -19,989 Closed
Marshall Wace
1002
Marshall Wace
United Kingdom
– -$1.93M -18,374 Closed
GAA
1003
Green Alpha Advisors
Colorado
– -$1.68M -15,971 Closed
RPI
1004
Railway Pension Investments
United Kingdom
– -$1.66M -15,800 Closed
CAS
1005
Coppell Advisory Solutions
Texas
– -$1.45M -14,026 Closed
HG
1006
Herbst Group
Connecticut
– -$1.47M -13,975 Closed
CFGS
1007
Concourse Financial Group Securities
Alabama
– -$1.35M -12,293 Closed
LOAMS
1008
Lombard Odier Asset Management (Switzerland)
Switzerland
– -$1.26M -11,965 Closed
IMC Chicago
1009
IMC Chicago
Illinois
– -$1.15M -10,973 Closed
IGAM
1010
iA Global Asset Management
Quebec, Canada
– -$1.1M -10,505 Closed
HCMT
1011
Highland Capital Management (Tennessee)
Tennessee
– -$1.04M -9,852 Closed
HF
1012
HRT Financial
New York
– -$998K -9,500 Closed
AI
1013
Axecap Investments
Ohio
– -$962K -9,149 Closed
TC
1014
TwinBeech Capital
New York
– -$956K -9,094 Closed
VEA
1015
Virtus ETF Advisers
New York
– -$944K -8,983 Closed
VI
1016
Versor Investments
New York
– -$915K -8,707 Closed
AC
1017
Allstate Corporation
Illinois
– -$895K -8,513 Closed
BC
1018
Bridgefront Capital
Texas
– -$877K -8,340 Closed
IWA
1019
IBEX Wealth Advisors
New Jersey
– -$831K -7,908 Closed
PCM
1020
Prelude Capital Management
New York
– -$785K -7,471 Closed
MS
1021
Madden Securities
Texas
– -$767K -7,300 Closed
PRS
1022
Pinkerton Retirement Specialists
Idaho
– -$753K -7,165 Closed
SAM
1023
Strategy Asset Managers
California
– -$745K -7,084 Closed
HFM
1024
Harvest Fund Management
China
– -$691K -6,571 Closed
HFM
1025
Hartford Funds Management
Pennsylvania
– -$639K -6,082 Closed
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