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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 %
UIM
226
USS Investment Management
United Kingdom
$5.14M – – –
NLGIA
227
Nippon Life Global Investors Americas
New York
$5.08M -$5.07M -58,390 -50%
EI
228
Ethic Inc
New York
$5.06M -$200K -2,304 -4%
Skandinaviska Enskilda Banken (SEB)
229
Skandinaviska Enskilda Banken (SEB)
Sweden
$5.05M -$94.6K -1,100 -2%
PNC Financial Services Group
230
PNC Financial Services Group
Pennsylvania
$5.03M +$108K +1,255 +2%
VanEck Associates
231
VanEck Associates
New York
$4.98M +$199K +2,318 +4%
Teacher Retirement System of Texas
232
Teacher Retirement System of Texas
Texas
$4.98M +$1.87M +21,775 +60%
HWAM
233
Hennion & Walsh Asset Management
New Jersey
$4.94M -$1.07M -12,383 -18%
AACA
234
American Assets Capital Advisers
California
$4.92M +$4.49M +52,200 +1,045%
PGFC
235
Peapack-Gladstone Financial Corp
New Jersey
$4.87M -$167K -1,938 -3%
ProShare Advisors
236
ProShare Advisors
Maryland
$4.83M +$236K +2,747 +5%
BCIM
237
British Columbia Investment Management
British Columbia, Canada
$4.83M -$4.39K -51 -0.1%
PAMP
238
Polar Asset Management Partners
Ontario, Canada
$4.82M -$7.35M -85,454 -60%
Allianz Asset Management
239
Allianz Asset Management
Germany
$4.75M +$533K +6,197 +13%
EGM
240
Engineers Gate Manager
New York
$4.74M +$1.56M +18,139 +49%
Northwestern Mutual Wealth Management
241
Northwestern Mutual Wealth Management
Wisconsin
$4.71M +$145K +1,691 +3%
WC
242
Woodstock Corp
Massachusetts
$4.6M -$965K -11,218 -17%
WAM
243
Werlinich Asset Management
Connecticut
$4.46M +$10.8K +125 +0.2%
DnB Asset Management
244
DnB Asset Management
Norway
$4.45M -$73.4K -853 -2%
OLA
245
Oliver Luxxe Assets
New Jersey
$4.43M -$4.43M -51,469 -50%
PC
246
Promethos Capital
Massachusetts
$4.37M -$115K -1,340 -3%
MC
247
Moors & Cabot
Massachusetts
$4.35M -$1.25M -14,495 -22%
FAF
248
Fjarde Ap-fonden
Sweden
$4.32M -$250K -2,900 -5%
Tudor Investment Corp
249
Tudor Investment Corp
Connecticut
$4.31M +$4.31M +50,109 New
Jane Street
250
Jane Street
New York
$4.28M +$2.56M +29,808 +149%
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