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Iron Mountain Inc. (IRM)
NYSE:IRM
US Market

Iron Mountain (IRM) Ownership - Who Owns Iron Mountain?

4,044 Followers

Iron Mountain (IRM) Ownership Overview

0.84%26.69%0.32%29.90%42.24%
0.32% Other Institutional Investors
29.90% ETFs
42.24% Public Companies and Individual Investors
The ownership structure of Iron Mountain (IRM) stock is a mix of institutional, retail, and individual investors. Approximately 56.92% of the company’s stock is owned by Institutional Investors, 0.84% is owned by Insiders, and 42.24% 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 27.01% of the company’s stock is owned by Institutional Investors, 0.84% is owned by Insiders, and 29.90% 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, 2025
xxxxxxxxxxxxx
$349717
Dec 31, 2025
xxxxxxxxxxxxx
$871223
Dec 31, 2025
xxxxxxxxxxxxx
$4176781

Top Shareholders

Holder
# of Shares
Type
% Holding
Value
42,113,562Institution14.16%4,605,960,276
27,354,079Institution9.20%2,991,715,620
18,351,487Institution6.17%2,007,102,133
12,510,305Institution4.21%1,368,252,058
11,025,699Institution3.71%1,205,880,700
4,955,677Institution1.67%542,002,393
3,309,575Institution1.11%361,968,218
3,296,338Institution1.11%360,520,487
3,013,138Institution1.01%329,546,903
2,852,797Institution0.96%312,010,408

Top Mutual Fund Holders

Holder
# of Shares
Type
% Holding
Value
27,354,079Institution9.20%2,991,715,620
11,025,699Institution3.71%1,205,880,700
4,955,677Institution1.67%542,002,393
3,296,338Institution1.11%360,520,487
3,013,138Institution1.01%329,546,903
2,615,444Institution0.88%286,051,110
2,117,169Institution0.71%231,554,774
2,103,581Institution0.71%230,068,654
1,937,599Institution0.65%211,915,203
1,829,000Institution0.61%200,037,730

Top ETF Holders

Holder
# of Shares
Type
% Holding
Value
12,902,677Institution4.34%1,397,747,033
8,883,602Institution2.99%962,360,605
7,602,887Institution2.56%823,620,749
6,103,401Institution2.05%661,181,430
3,776,639Institution1.27%413,051,007
3,525,774Institution1.19%328,002,755
3,481,226Institution1.17%378,374,454
2,613,320Institution0.88%283,100,956
2,472,275Institution0.83%268,711,570
2,085,929Institution0.70%226,719,623

FAQ

Who Owns Iron Mountain Inc. (IRM)?
According to the latest TipRanks data, approximately 0.32% of the company's stock is held by institutional investors, 0.84% is held by insiders, and 42.24% 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 0.32% 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 42.24% 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.