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Iron Mountain Inc. (IRM)
NYSE:IRM
US Market
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Iron Mountain (IRM) Ownership - Who Owns Iron Mountain?

4,057 Followers

Iron Mountain (IRM) Ownership Overview

0.84%26.15%5.11%30.27%37.63%
5.11% Other Institutional Investors
30.27% ETFs
37.63% Public Companies and Individual Investors
The ownership structure of Iron Mountain (IRM) stock is a mix of institutional, retail, and individual investors. Approximately 61.53% of the company’s stock is owned by Institutional Investors, 0.84% is owned by Insiders, and 37.63% is owned by Public Companies and Individual Investors.
The ownership structure of Iron Mountain (IRM) stock is a mix of institutional, retail, and individual investors. Approximately 31.26% of the company’s stock is owned by Institutional Investors, 0.84% is owned by Insiders, and 30.27% is owned by Public Companies and Individual Investors.

Recent Insider Trading Activity

Date
Name
Activity
Value
Mar 03, 2026
xxxxxxxxxxxxx
$762160
Nov 21, 2025
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$2954
Jun 05, 2025
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$89973
Jun 03, 2025
xxxxxxxxxxxxx
$6826961

Recent Hedge Fund Trading Activity

Date
Firm
Activity
Value
Dec 31, 2023
xxxxxxxxxxxxx
$349717
Dec 31, 2023
xxxxxxxxxxxxx
$4176781
Dec 31, 2023
xxxxxxxxxxxxx
$871224

Top Shareholders

Holder
# of Shares
Type
% Holding
Value
42,152,116Institution14.17%5,430,878,625
27,354,079Institution9.19%3,524,299,538
18,264,640Institution6.14%2,353,216,218
12,545,467Institution4.22%1,616,357,968
11,025,699Institution3.71%1,420,551,059
5,019,821Institution1.69%646,753,738
3,407,082Institution1.15%438,968,445
3,296,338Institution1.11%424,700,188
3,279,283Institution1.10%422,502,822
3,013,138Institution1.01%388,212,700

Top Mutual Fund Holders

Holder
# of Shares
Type
% Holding
Value
27,354,079Institution9.19%3,524,299,538
11,025,699Institution3.71%1,420,551,059
5,019,821Institution1.69%646,753,738
3,296,338Institution1.11%424,700,188
3,013,138Institution1.01%388,212,700
2,615,444Institution0.88%336,973,805
2,117,169Institution0.71%272,776,054
2,103,581Institution0.71%271,025,376
1,937,599Institution0.65%249,640,255
1,829,000Institution0.61%235,648,360

Top ETF Holders

Holder
# of Shares
Type
% Holding
Value
12,874,651Institution4.33%1,315,016,878
8,941,317Institution3.01%913,266,118
7,534,153Institution2.53%769,538,387
6,071,337Institution2.04%620,126,361
3,828,595Institution1.29%485,504,132
3,526,634Institution1.19%447,212,458
3,525,774Institution1.19%328,002,755
2,597,436Institution0.87%265,302,113
2,441,866Institution0.82%309,653,027
2,137,646Institution0.72%218,339,162

FAQ

Who Owns Iron Mountain Inc. (IRM)?
According to the latest TipRanks data, approximately 5.11% of the company's stock is held by institutional investors, 0.84% is held by insiders, and 37.63% is held by retail investors.
    What percentage of Iron Mountain Inc. (IRM) stock is held by institutional investors?
    According to the latest TipRanks data, approximately 5.11% of Iron Mountain Inc. (IRM) stock is held by institutional investors.
      What percentage of Iron Mountain Inc. (IRM) stock is held by retail investors?
      According to the latest TipRanks data, approximately 37.63% of Iron Mountain Inc. (IRM) stock is held by retail investors.
        Who owns the most shares of Iron Mountain Inc. (IRM)?
        Vanguard owns the most shares of Iron Mountain Inc. (IRM).
          What is the significance of the ownership structure for a publicly traded company?
          The ownership structure can impact the company's decision making, as large institutional investors may exert influence on the company's management and can also affect the company's stock price with their buying and selling patterns.