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Iron Mountain

Name Holding Trade Value Shares
Change
Change in
Stake
Capital World Investors
1
Capital World Investors
California
$825M +$63.5M +2,340,879 +10%
Vanguard Group
2
Vanguard Group
Pennsylvania
$438M +$10.3M +381,333 +3%
HCM
3
Highfields Capital Management
Massachusetts
$383M +$40.4M +1,489,819 +15%
SC
4
Schooner Capital
Florida
$293M
Parnassus Investments
5
Parnassus Investments
California
$272M +$14.5M +532,755 +7%
State Street
6
State Street
Massachusetts
$251M +$8.63M +318,190 +4%
T. Rowe Price Associates
7
T. Rowe Price Associates
Maryland
$248M -$66.1M -2,436,902 -24%
BC
8
Brookfield Corp
Ontario, Canada
$196M +$11.4M +420,789 +8%
Capital International Investors
9
Capital International Investors
California
$184M +$41.8M +1,539,362 +38%
CGT
10
Capital Guardian Trust
California
$164M +$22.8M +842,049 +20%
BIT
11
BlackRock Institutional Trust
California
$161M +$5.16M +190,052 +4%
RIM
12
RS Investment Management
California
$129M -$4.46M -164,457 -4%
Bank of New York Mellon
13
Bank of New York Mellon
New York
$125M +$7.14M +263,011 +7%
RRAM
14
River Road Asset Management
Kentucky
$121M -$9.75M -359,567 -9%
OCAM
15
Owl Creek Asset Management
New York
$115M +$35.3M +1,300,652 +59%
WA
16
Wasatch Advisors
Utah
$111M
EM
17
Elliott Management
New York
$106M +$88.1M +3,246,000 New
Norges Bank
18
Norges Bank
Norway
$101M +$42.2M +1,553,856 +102%
Invesco
19
Invesco
Georgia
$99.6M -$1.46M -53,778 -2%
Northern Trust
20
Northern Trust
Illinois
$84.9M +$1.86M +68,440 +3%
MCM
21
Munder Capital Management
Michigan
$84.3M -$3.64M -134,117 -5%
Jennison Associates
22
Jennison Associates
New York
$81.5M +$3.37M +124,226 +5%
BFA
23
BlackRock Fund Advisors
California
$75.1M +$2.71M +99,826 +5%
Barclays
24
Barclays
United Kingdom
$71.6M +$50.8M +1,870,880 +548%
MP
25
Makaira Partners
California
$70.8M -$537K -19,798 -0.9%