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Cogent Communications

Name Holding Trade Value Shares
Change
Change in
Stake
FCM
1
Frontier Capital Management
Massachusetts
$116M +$116M +4,136,672 New
SAS
2
Sarbit Advisory Services
Manitoba, Canada
$90.3M +$85.2M +3,050,902 New
Jennison Associates
3
Jennison Associates
New York
$81.7M +$81M +2,902,203 New
Vanguard Group
4
Vanguard Group
Pennsylvania
$75.9M +$75.3M +2,694,715 New
CWAM
5
Columbia Wanger Asset Management
Illinois
$62.7M +$62.2M +2,227,000 New
FAM
6
Fred Alger Management
New York
$49.9M +$49.5M +1,772,133 New
JCAM
7
Jericho Capital Asset Management
New York
$39.8M +$39.5M +1,415,208 New
BIT
8
BlackRock Institutional Trust
California
$35.7M +$35.4M +1,269,125 New
SRFM
9
Shannon River Fund Management
New York
$34M +$33.8M +1,209,500 New
Capital World Investors
10
Capital World Investors
California
$31.9M +$31.7M +1,135,000 New
BFA
11
BlackRock Fund Advisors
California
$30.4M +$30.1M +1,079,441 New
CCM
12
Century Capital Management
Massachusetts
$29.5M +$29.2M +1,046,402 New
Fidelity Investments
13
Fidelity Investments
Massachusetts
$24.1M +$23.9M +855,276 New
State Street
14
State Street
Massachusetts
$23.7M +$23.5M +840,816 New
EAM
15
Eagle Asset Management
Florida
$22.7M +$22.5M +807,027 New
Ameriprise
16
Ameriprise
Minnesota
$22.2M +$22M +787,073 New
Renaissance Technologies
17
Renaissance Technologies
New York
$21.8M +$21.6M +774,600 New
Northern Trust
18
Northern Trust
Illinois
$20.9M +$20.8M +743,779 New
Capital Research Global Investors
19
Capital Research Global Investors
California
$20.4M +$20.2M +723,700 New
ACMM
20
Arbor Capital Management (Minnesota)
Minnesota
$16.7M +$16.6M +593,820 New
Bank of New York Mellon
21
Bank of New York Mellon
New York
$15.6M +$15.5M +554,810 New
CAM
22
Contour Asset Management
New York
$14.6M +$14.5M +520,000 New
RCP
23
RIT Capital Partners
United Kingdom
$14.1M +$14M +500,000 New
Norges Bank
24
Norges Bank
Norway
$12.9M +$12.8M +458,618 New
Citadel Advisors
25
Citadel Advisors
Florida
$12M +$11.9M +424,817 New