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 1,159 institutions that hold shares in the stock, with a total of 245 Million shares, which have been reported (via 13F filing form) to have a value of $22.4 Billion.
| Holding | Report Date | shares Held | Holding Value (Reported) | Last Trade | Trade History |
|---|---|---|---|---|---|
|
Vanguard Group Inc
Valley Forge, PA |
Nov 07, 2025 Q3 2025 |
47,253,100
shares
|
$4.32 Billion
0.07% of portfolio
|
Q3 2025
Added 0.4%
|
|
|
Black Rock Inc.
New York, NY |
Aug 13, 2024 Q2 2024 |
27,891,960
shares
|
$2.55 Billion
0.06% of portfolio
|
Q2 2024
Added 20.7%
|
|
|
State Street Corp
Boston, MA |
Nov 14, 2025 Q3 2025 |
17,131,787
shares
|
$1.57 Billion
0.06% of portfolio
|
Q3 2025
Added 1.92%
|
|
|
Cohen & Steers, Inc.
New York, NY |
Nov 14, 2025 Q3 2025 |
15,748,682
shares
|
$1.44 Billion
2.9% of portfolio
|
Q3 2025
Added 14.38%
|
|
|
Geode Capital Management, LLC
Boston, MA |
Nov 12, 2025 Q3 2025 |
8,190,580
shares
|
$748 Million
0.05% of portfolio
|
Q3 2025
Added 1.28%
|
|
|
Invesco Ltd.
Atlanta, GA |
Nov 13, 2025 Q3 2025 |
5,066,516
shares
|
$463 Million
0.09% of portfolio
|
Q3 2025
Added 18.11%
|
|
|
Dimensional Fund Advisors LP
Austin, TX |
Nov 12, 2025 Q3 2025 |
4,348,039
shares
|
$397 Million
0.1% of portfolio
|
Q3 2025
Added 1.29%
|
|
|
Northern Trust Corp
Chicago, IL |
Nov 14, 2025 Q3 2025 |
4,031,566
shares
|
$368 Million
0.05% of portfolio
|
Q3 2025
Reduced 0.89%
|
|
|
Charles Schwab Investment Management Inc
San Francisco, CA |
Nov 10, 2025 Q3 2025 |
3,674,245
shares
|
$336 Million
0.06% of portfolio
|
Q3 2025
Added 1.34%
|
|
|
Morgan Stanley
New York, NY |
Nov 14, 2025 Q3 2025 |
3,611,399
shares
|
$330 Million
0.02% of portfolio
|
Q3 2025
Added 2.99%
|
|
|
Pictet Asset Management Sa
Geneva 73, V8 |
Aug 10, 2023 Q2 2023 |
3,369,780
shares
|
$308 Million
0.23% of portfolio
|
Q2 2023
Added 1.19%
|
|
|
Legal & General Group PLC
London, X0 |
Nov 13, 2025 Q3 2025 |
3,215,455
shares
|
$294 Million
0.08% of portfolio
|
Q3 2025
Reduced 2.07%
|
|
|
Contour Asset Management LLC
New York, NY |
Nov 14, 2025 Q3 2025 |
3,165,830
shares
|
$289 Million
8.82% of portfolio
|
Q3 2025
Added 35.56%
|
|
|
Ubs Asset Management Americas Inc
Chicago, IL |
Nov 14, 2025 Q3 2025 |
3,161,589
shares
|
$289 Million
0.07% of portfolio
|
Q3 2025
Added 597.88%
|
|
|
Daiwa Securities Group Inc.
Tokyo, M0 |
Nov 14, 2025 Q3 2025 |
3,151,088
shares
|
$288 Million
1.08% of portfolio
|
Q3 2025
Added 6.64%
|
|
|
Deutsche Bank Ag\
Frankfurt Am Main, 2M |
Nov 13, 2025 Q3 2025 |
2,890,451
shares
|
$264 Million
0.1% of portfolio
|
Q3 2025
Reduced 15.72%
|
|
|
Nuveen Asset Management, LLC
Chicago, IL |
Feb 14, 2025 Q4 2024 |
2,548,970
shares
|
$233 Million
0.08% of portfolio
|
Q4 2024
Added 38.99%
|
|
|
Principal Financial Group Inc
Des Moines, IA |
Nov 04, 2025 Q3 2025 |
2,527,158
shares
|
$231 Million
0.14% of portfolio
|
Q3 2025
Reduced 2.23%
|
|
|
Centersquare Investment Management LLC
Plymouth Meeting, PA |
Nov 10, 2025 Q3 2025 |
2,514,464
shares
|
$230 Million
2.66% of portfolio
|
Q3 2025
Added 23.81%
|
|
|
Pictet Asset Management Holding Sa
Carouge, V8 |
Nov 18, 2025 Q3 2025 |
2,464,168
shares
|
$225 Million
0.26% of portfolio
|
Q3 2025
Reduced 0.46%
|
|
|
Royal Bank Of Canada
Toronto, A6 |
Nov 14, 2025 Q3 2025 |
2,298,983
shares
|
$210 Million
0.04% of portfolio
|
Q2 2025
Added 310.26%
|
|
|
Nuveen, LLC
Charlotte, NC |
Nov 12, 2025 Q3 2025 |
2,142,505
shares
|
$196 Million
0.06% of portfolio
|
Q3 2025
Added 4.27%
|
|
|
Capital World Investors
Los Angeles, CA |
Nov 13, 2025 Q3 2025 |
2,117,169
shares
|
$193 Million
0.03% of portfolio
|
Q1 2025
Reduced 44.54%
|
|
|
Prudential Financial Inc
Newark, NJ |
Nov 13, 2025 Q3 2025 |
2,113,617
shares
|
$193 Million
0.27% of portfolio
|
Q3 2025
Added 8.63%
|
|
|
Jpmorgan Chase & CO
New York, NY |
Nov 26, 2025 Q3 2025 |
2,056,448
shares
|
$188 Million
0.01% of portfolio
|
Q3 2025
Reduced 0.25%
|
|