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Iron Mountain
IRM

Name Holding Trade Value Shares
Change 		Change in
Stake
Capital World Investors
1
Capital World Investors
California
$760M -$61.9M -1,908,387 -8%
HCM
2
Highfields Capital Management
Massachusetts
$502M +$119M +3,680,253 +31%
Vanguard Group
3
Vanguard Group
Pennsylvania
$418M -$18.6M -572,222 -4%
Parnassus Investments
4
Parnassus Investments
California
$303M +$31.9M +983,206 +12%
SC
5
Schooner Capital
Florida
$269M -$21.9M -676,605 -8%
State Street
6
State Street
Massachusetts
$247M -$3.66M -113,012 -1%
T. Rowe Price Associates
7
T. Rowe Price Associates
Maryland
$222M -$25.1M -773,461 -10%
Capital International Investors
8
Capital International Investors
California
$169M -$13.8M -425,464 -8%
BIT
9
BlackRock Institutional Trust
California
$149M -$11M -340,626 -7%
RRAM
10
River Road Asset Management
Kentucky
$144M +$23.1M +713,697 +19%
CGT
11
Capital Guardian Trust
California
$143M -$19.8M -610,155 -12%
OCAM
12
Owl Creek Asset Management
New York
$137M +$22.5M +695,134 +20%
Bank of New York Mellon
13
Bank of New York Mellon
New York
$124M -$112K -3,440 -0.1%
WA
14
Wasatch Advisors
Utah
$112M +$1.14M +35,135 +1%
BFA
15
BlackRock Fund Advisors
California
$106M +$30.6M +943,360 +41%
BC
16
Brookfield Corp
Ontario, Canada
$105M -$89.7M -2,767,097 -46%
SF
17
Schooner Foundation
Massachusetts
$105M +$104M +3,202,724 New
RIM
18
RS Investment Management
California
$95M -$33.7M -1,039,488 -26%
Northern Trust
19
Northern Trust
Illinois
$88.9M +$4.25M +131,065 +5%
MCM
20
Munder Capital Management
Michigan
$76.5M -$7.41M -228,687 -9%
Invesco
21
Invesco
Georgia
$73.3M -$25.7M -793,508 -26%
MP
22
Makaira Partners
California
$63.1M -$7.32M -225,793 -10%
Fidelity Investments
23
Fidelity Investments
Massachusetts
$62.6M -$3.47M -106,940 -5%
Allianz Asset Management
24
Allianz Asset Management
Germany
$60.5M +$60M +1,849,687 +45,525%
EM
25
Elliott Management
New York
$52.3M -$53.3M -1,645,357 -51%
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