Institutional Ownership Iron Mountain Inc (IRM)
This table provides information about the institutional ownership of Iron Mountain Inc (IRM). We have compiled data on the 1,171 institutions that hold shares in the stock, with a total of 244 Million shares, which have been reported (via 13F filing form) to have a value of $22.5 Billion.
| Holding | Report Date | shares Held | Holding Value (Reported) | Last Trade | Trade History |
|---|---|---|---|---|---|
|
Vanguard Group Inc
Valley Forge, PA |
Aug 11, 2025 Q2 2025 |
47,064,887
shares
|
$4.34 Billion
0.08% of portfolio
|
Q2 2025
Added 0.51%
|
|
|
Black Rock Inc.
New York, NY |
Aug 13, 2024 Q2 2024 |
27,891,960
shares
|
$2.57 Billion
0.06% of portfolio
|
Q2 2024
Added 20.7%
|
|
|
State Street Corp
Boston, MA |
Aug 14, 2025 Q2 2025 |
16,809,643
shares
|
$1.55 Billion
0.07% of portfolio
|
Q2 2025
Added 0.63%
|
|
|
Cohen & Steers, Inc.
New York, NY |
Aug 14, 2025 Q2 2025 |
13,768,631
shares
|
$1.27 Billion
2.59% of portfolio
|
Q2 2025
Added 2.13%
|
|
|
Geode Capital Management, LLC
Boston, MA |
Aug 08, 2025 Q2 2025 |
8,086,718
shares
|
$745 Million
0.06% of portfolio
|
Q2 2025
Reduced 2.37%
|
|
|
Dimensional Fund Advisors LP
Austin, TX |
Aug 12, 2025 Q2 2025 |
4,292,766
shares
|
$396 Million
0.11% of portfolio
|
Q2 2025
Added 0.85%
|
|
|
Invesco Ltd.
Atlanta, GA |
Aug 13, 2025 Q2 2025 |
4,289,583
shares
|
$395 Million
0.08% of portfolio
|
Q2 2025
Added 50.57%
|
|
|
Norges Bank
Oslo, Q8 |
Aug 13, 2025 Q2 2025 |
4,089,466
shares
|
$377 Million
0.05% of portfolio
|
Q2 2025
New holding
|
|
|
Northern Trust Corp
Chicago, IL |
Aug 13, 2025 Q2 2025 |
4,067,808
shares
|
$375 Million
0.06% of portfolio
|
Q2 2025
Reduced 4.68%
|
|
|
Charles Schwab Investment Management Inc
San Francisco, CA |
Aug 12, 2025 Q2 2025 |
3,625,808
shares
|
$334 Million
0.07% of portfolio
|
Q2 2025
Added 3.97%
|
|
|
Morgan Stanley
New York, NY |
Aug 15, 2025 Q2 2025 |
3,506,483
shares
|
$323 Million
0.02% of portfolio
|
Q2 2025
Added 3.47%
|
|
|
Deutsche Bank Ag\
Frankfurt Am Main, 2M |
Aug 12, 2025 Q2 2025 |
3,429,481
shares
|
$316 Million
0.13% of portfolio
|
Q2 2025
Added 9.05%
|
|
|
Pictet Asset Management Sa
Geneva 73, V8 |
Aug 10, 2023 Q2 2023 |
3,369,780
shares
|
$311 Million
0.23% of portfolio
|
Q2 2023
Added 1.19%
|
|
|
Legal & General Group PLC
London, X0 |
Aug 12, 2025 Q2 2025 |
3,283,276
shares
|
$303 Million
0.09% of portfolio
|
Q2 2025
Added 3.12%
|
|
|
Daiwa Securities Group Inc.
Tokyo, M0 |
Aug 14, 2025 Q2 2025 |
2,954,927
shares
|
$272 Million
1.12% of portfolio
|
Q2 2025
Added 7.36%
|
|
|
Principal Financial Group Inc
Des Moines, IA |
Aug 08, 2025 Q2 2025 |
2,584,856
shares
|
$238 Million
0.15% of portfolio
|
Q2 2025
Added 185.88%
|
|
|
Nuveen Asset Management, LLC
Chicago, IL |
Feb 14, 2025 Q4 2024 |
2,548,970
shares
|
$235 Million
0.08% of portfolio
|
Q4 2024
Added 38.99%
|
|
|
Pictet Asset Management Holding Sa
Carouge, V8 |
Aug 13, 2025 Q2 2025 |
2,475,671
shares
|
$228 Million
0.27% of portfolio
|
Q2 2025
Reduced 0.04%
|
|
|
Contour Asset Management LLC
New York, NY |
Aug 14, 2025 Q2 2025 |
2,335,348
shares
|
$215 Million
8.71% of portfolio
|
Q2 2025
Added 63.63%
|
|
|
Capital World Investors
Los Angeles, CA |
Aug 13, 2025 Q2 2025 |
2,117,169
shares
|
$195 Million
0.03% of portfolio
|
Q1 2025
Reduced 44.54%
|
|
|
Jpmorgan Chase & CO
New York, NY |
May 12, 2025 Q1 2025 |
2,061,560
shares
|
$190 Million
0.01% of portfolio
|
Q1 2025
Added 17.8%
|
|
|
Nuveen, LLC
Charlotte, NC |
Aug 12, 2025 Q2 2025 |
2,054,789
shares
|
$189 Million
0.06% of portfolio
|
Q2 2025
Reduced 8.03%
|
|
|
Royal Bank Of Canada
Toronto, A6 |
Aug 14, 2025 Q2 2025 |
2,042,795
shares
|
$188 Million
0.04% of portfolio
|
Q2 2025
Added 310.26%
|
|
|
Centersquare Investment Management LLC
Plymouth Meeting, PA |
Aug 12, 2025 Q2 2025 |
2,030,916
shares
|
$187 Million
2.22% of portfolio
|
Q2 2025
Added 1.12%
|
|
|
Prudential Financial Inc
Newark, NJ |
Aug 12, 2025 Q2 2025 |
1,945,769
shares
|
$179 Million
0.27% of portfolio
|
Q2 2025
Added 44.72%
|