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Iron Mountain

1,064 hedge funds and large institutions have $25.4B invested in Iron Mountain in 2024 Q4 according to their latest regulatory filings, with 139 funds opening new positions, 363 increasing their positions, 409 reducing their positions, and 107 closing their positions.

New
Increased
Maintained
Reduced
Closed

30% more first-time investments, than exits

New positions opened: 139 | Existing positions closed: 107

1% more funds holding

Funds holding: 1,0501,064 (+14)

1% more call options, than puts

Call options by funds: $191M | Put options by funds: $188M

1.83% less ownership

Funds ownership: 82.7%80.87% (-1.8%)

11% less repeat investments, than reductions

Existing positions increased: 363 | Existing positions reduced: 409

12% less capital invested

Capital invested by funds: $28.8B → $25.4B (-$3.37B)

54% less funds holding in top 10

Funds holding in top 10: 2411 (-13)

Holders
1,064
Holders Change
+14
Holders Change %
+1.33%
% of All Funds
14.01%
Holding in Top 10
11
Holding in Top 10 Change
-13
Holding in Top 10 Change %
-54.17%
% of All Funds
0.14%
New
139
Increased
363
Reduced
409
Closed
107
Calls
$191M
Puts
$188M
Net Calls
+$2.41M
Net Calls Change
-$132M
Name Holding Trade Value Shares
Change
Change in
Stake
American Century Companies
51
American Century Companies
Missouri
$65.7M -$20.9M -178,279 -22%
Aberdeen Group
52
Aberdeen Group
United Kingdom
$65.4M +$441K +3,756 +0.6%
Citadel Advisors
53
Citadel Advisors
Florida
$63.5M +$63.3M +538,470 +817%
LPL Financial
54
LPL Financial
California
$59.8M -$2.56M -21,795 -4%
Asset Management One
55
Asset Management One
Japan
$58.9M -$904K -7,696 -1%
AllianceBernstein
56
AllianceBernstein
Tennessee
$58.4M -$6.27M -53,400 -9%
CIMLRA
57
CBRE Investment Management Listed Real Assets
Pennsylvania
$56.9M +$39M +331,536 +158%
Raymond James Financial
58
Raymond James Financial
Florida
$55.3M +$61.8M +525,841 New
Neuberger Berman Group
59
Neuberger Berman Group
New York
$54.2M -$16.1M -137,382 -21%
AAMU
60
APG Asset Management US
New York
$54M +$4.02M +34,208 +7%
Royal Bank of Canada
61
Royal Bank of Canada
Ontario, Canada
$52.6M +$859K +7,314 +1%
BNP Paribas Financial Markets
62
BNP Paribas Financial Markets
France
$52.3M -$2.6M -22,117 -4%
California Public Employees Retirement System
63
California Public Employees Retirement System
California
$52.2M -$3.16M -26,931 -5%
Nomura Asset Management
64
Nomura Asset Management
Japan
$49.9M +$2.15M +18,296 +4%
BTCPP
65
Border to Coast Pensions Partnership
United Kingdom
$48.3M -$1.76M -15,000 -3%
CPC
66
Cookson Peirce & Co
Pennsylvania
$47.8M -$583K -4,963 -1%
ACM
67
Adelante Capital Management
California
$46.9M +$5.72M +48,674 +12%
Canada Life
68
Canada Life
Manitoba, Canada
$45.7M +$1.78M +15,140 +4%
California State Teachers Retirement System (CalSTRS)
69
California State Teachers Retirement System (CalSTRS)
California
$45.7M -$4.21M -35,848 -8%
Aviva
70
Aviva
United Kingdom
$45.1M -$955K -8,126 -2%
UBS AM
71
UBS AM
Illinois
$44.8M -$322M -2,744,327 -87%
IIM
72
INTECH Investment Management
Florida
$44.2M +$24.7M +210,045 +100%
Principal Financial Group
73
Principal Financial Group
Iowa
$43.7M +$7.39M +62,917 +18%
Barclays
74
Barclays
United Kingdom
$42.6M -$21.8M -185,881 -31%
National Pension Service
75
National Pension Service
South Korea
$42.3M -$6.66M -56,665 -12%

IRM Hedge Fund Activity: Q4 2024 in Review

1,064 of the 7,592 institutional investors tracked by Wall St. Rank reported a position in Iron Mountain (IRM) for Q4 2024, worth a combined $25.4B — down 12% from $28.8B a quarter earlier.

Buyers outnumbered sellers: 139 funds opened new IRM positions and 107 closed out — a net gain of 32 holders — while 363 added to existing stakes and 409 trimmed.

The largest buyer was Northern Trust, adding an estimated $183M. The largest seller was Cohen & Steers, cutting an estimated $331M.

  • 1,064 institutional investors held Iron Mountain (IRM) as of Q4 2024, up from 1,050 in Q3 2024.
  • Funds reported $25.4B of Iron Mountain stock for Q4 2024, down 12% quarter-over-quarter.
  • 139 funds opened new Iron Mountain positions in Q4 2024 and 107 closed out, a net change of +32 holders.
  • The largest Iron Mountain buyer in Q4 2024 was Northern Trust, an estimated $183M added.
  • The largest Iron Mountain seller in Q4 2024 was Cohen & Steers, an estimated $331M sold.

Based on aggregated 13F filings for Q4 2024.