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Iron Mountain

984 hedge funds and large institutions have $20.7B invested in Iron Mountain in 2025 Q1 according to their latest regulatory filings, with 88 funds opening new positions, 344 increasing their positions, 397 reducing their positions, and 143 closing their positions.

New
Increased
Maintained
Reduced
Closed

more ownership

Funds ownership:

less funds holding

Funds holding:

less funds holding in top 10

Funds holding in top 10:

less repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

18% less capital invested

Capital invested by funds: $25.4B → $20.7B (-$4.64B)

24% less call options, than puts

Call options by funds: $151M | Put options by funds: $197M

38% less first-time investments, than exits

New positions opened: 88 | Existing positions closed: 143

Holders
984
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
10
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$151M
Puts
$197M
Net Calls
Net Calls Change

Top Buyers

1 +$397M
2 +$271M
3 +$123M
4
Goldman Sachs
Goldman Sachs
New York
+$78.6M
5
Point72 Asset Management
Point72 Asset Management
Connecticut
+$75.3M

Top Sellers

1 -$224M
2 -$151M
3 -$146M
4
Cohen & Steers
Cohen & Steers
New York
-$123M
5
Wellington Management Group
Wellington Management Group
Massachusetts
-$41.3M
Name Holding Trade Value Shares
Change
Change in
Stake
1
$4.03B
2
$3.03B
3
$1.45B
4
$1.16B
5
$716M
6
$455M
7
$367M
8
$366M
9
$300M
10
$292M
11
$274M
12
$271M
13
$245M
14
$237M
15
$213M
16
$192M
17
$182M
18
$179M
19
$177M
20
$173M
21
$170M
22
$160M
23
$152M
24
$137M
25
$132M