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Iron Mountain

987 hedge funds and large institutions have $20.8B invested in Iron Mountain in 2025 Q1 according to their latest regulatory filings, with 89 funds opening new positions, 345 increasing their positions, 398 reducing their positions, and 144 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 → $20.8B (-$4.61B)

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: 89 | Existing positions closed: 144

Holders
987
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
601
$447K
602
$446K
603
$444K
604
$443K
605
$440K
606
$438K
607
$433K
608
$431K
609
$431K
610
$431K
611
$430K
612
$428K
613
$428K
614
$420K
615
$416K
616
$416K
617
$415K
618
$411K
619
$409K
620
$407K
621
$404K
622
$397K
623
$397K
624
$391K
625
$390K