IRM

Iron Mountain Inc

Latest period2026 - Q1Total superinvestors1088

Top 10 Superinvestors by Shares Owned

This chart shows the top 10 superinvestors based on the number of shares they owned in 2025-Q4 and 2026-Q1. According to the most recent SEC 13F filing, 1088 superinvestors own shares of Iron Mountain Inc (IRM), although recent data may remain incomplete due to pending filings.

Quarter-over-Quarter Change (%)

This chart highlights the quarter-over-quarter change (%) in the number of superinvestors holding Iron Mountain Inc (IRM), the total shares they held, and the total reported dollar value. It gives a clear view of whether there is ongoing momentum. The dotted lines at the top and bottom adjust longer bars to keep smaller data points visible for better comparison.

Superinvestors' Activity (%) Over the Last 4 Quarters

This chart shows superinvestors' activity with Iron Mountain Inc (IRM) over the last four quarters, highlighting the percentage of investors who added, increased, decreased, held, or exited their positions, revealing shifts in sentiment over time.

Superinvestors' Past Actions

This chart displays superinvestors' past actions with Iron Mountain Inc (IRM) over the last 10 years (40 quarters), helping to visualize the collective momentum and investment trends over time.

Superinvestors ownership

SuperinvestorPortfolio %Reported Value
Spencer Fleming@Blackrock, Inc.
Recent Activity
Increased 0.31%
0.06%
$3.373B
33.021M shares@ 102.15 avg price
Christine M. Buchanan@Vanguard Portfolio Management Llc
Recent Activity
New Position
0.14%
$2.555B
25.016M shares@ 102.15 avg price
Christine M. Buchanan@Vanguard Capital Management Llc
Recent Activity
New Position
0.05%
$1.916B
18.759M shares@ 102.14 avg price
ELIZABETH SCHAEFER@State Street Corp
Recent Activity
Increased 3.93%
0.07%
$1.808B
17.552M shares@ 103.0 avg price
Nargis Hilal@Cohen & Steers, Inc.
Recent Activity
Decreased -14.46%
2.87%
$1.652B
16.169M shares@ 102.15 avg price
Laura Doherty@Geode Capital Management, Llc
Recent Activity
Increased 2.34%
0.06%
$863.699M
8.486M shares@ 101.78 avg price
Stephanie J. Brown@Fmr Llc
Recent Activity
Decreased -6.26%
0.05%
$764.456M
7.484M shares@ 102.14 avg price
Claire Gordon@Morgan Stanley
Recent Activity
Increased 29.27%
0.03%
$475.181M
4.652M shares@ 102.15 avg price
Jill Hittner@Principal Financial Group Inc
Recent Activity
Increased 8.53%
0.25%
$466.382M
4.566M shares@ 102.15 avg price
Selwyn Notelovitz@Dimensional Fund Advisors Lp
Recent Activity
Increased 2.78%
0.1%
$464.931M
4.552M shares@ 102.14 avg price

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