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Iron Mountain

994 hedge funds and large institutions have $21.1B invested in Iron Mountain in 2025 Q1 according to their latest regulatory filings, with 90 funds opening new positions, 348 increasing their positions, 400 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:

17% less capital invested

Capital invested by funds: $25.4B → $21.1B (-$4.28B)

24% less call options, than puts

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

37% less first-time investments, than exits

New positions opened: 90 | Existing positions closed: 143

Holders
994
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 +$445M
2 +$304M
3 +$138M
4
Goldman Sachs
Goldman Sachs
New York
+$88M
5
Point72 Asset Management
Point72 Asset Management
Connecticut
+$84.3M

Top Sellers

1 -$224M
2 -$169M
3 -$164M
4
Cohen & Steers
Cohen & Steers
New York
-$137M
5
Wellington Management Group
Wellington Management Group
Massachusetts
-$46.3M
Name Holding Trade Value Shares
Change
Change in
Stake
351
$1.99M
352
$1.98M
353
$1.96M
354
$1.94M
355
$1.93M
356
$1.93M
357
$1.86M
358
$1.85M
359
$1.83M
360
$1.83M
361
$1.82M
362
$1.81M
363
$1.8M
364
$1.78M
365
$1.77M
366
$1.77M
367
$1.76M
368
$1.74M
369
$1.72M
370
$1.71M
371
$1.68M
372
$1.66M
373
$1.64M
374
$1.6M
375
$1.59M