DOSSIER · 13F Holders · Q1 2026Communication Services · Communications Services, NEC
CCOI

COGENT COMMUNICATIONS HLDGS

252 institutions still hold COGENT COMMUNICATIONS HLDGS as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 19239V302·Communications Services, NEC·252 13F holders·last filed Mar 31, 2026
Market cap
13F value held
$715M
visible holders
Holders
252
filers reporting
Concentration
18.65%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q1 2026

252 institutions reported CCOI in Q1 2026. BlackRock, Inc. leads at 18.7% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$133M7.1M0.00%Q1 2026
02
Turtle Creek Asset Management Inc.
CIK 0001484148
$82M4.3M3.07%Q1 2026
03
Vanguard Portfolio Management
CIK 0002100121· Index
$52M2.7M0.00%Q1 2026
04
EdgePoint Investment Group Inc.
CIK 0001481669
$43M2.3M0.34%Q1 2026
05
STATE STREET CORP
CIK 0000093751
$43M2.3M0.00%Q1 2026
06
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$40M2.1M0.00%Q1 2026
07
Park West Asset Management LLC
CIK 0001386928
$36M1.9M3.09%Q1 2026
08
MORGAN STANLEY
CIK 0000895421
$35M1.9M0.00%Q1 2026
09
Tyro Capital Management LLC
CIK 0001915395
$30M1.6M3.27%Q1 2026
10
Newtyn Management, LLC
CIK 0001569241
$30M1.6M3.22%Q1 2026
11
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 0001446194· Market maker
$28M1.5M0.00%Q1 2026
12
MAGNOLIA GROUP, LLC
CIK 0001618376
$24M1.3M4.52%Q1 2026
13
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$23M1.2M0.00%Q1 2026
14
DigitalBridge Group, Inc.
CIK 0001679688
$22M1.1M1.36%Q1 2026
15
Harspring Capital Management, LLC
CIK 0001652327
$20M1.1M10.77%Q1 2026
16
BlackBarn Capital Partners LP
CIK 0002010204
$19M1.0M1.52%Q1 2026
17
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
CIK 0000884546· Index
$14M760K0.00%Q1 2026
18
GOLDMAN SACHS GROUP INC
CIK 0000886982
$13M713K0.00%Q1 2026
19
JANE STREET GROUP, LLC
CIK 0001595888· Market maker
$13M701K0.00%Q1 2026
20
Oakum Bay Capital LLC
CIK 0001571727
$13M690K6.97%Q1 2026
Page 1 of 13
232 more holders available. Log in →
Insiders at COGENT COMMUNICATIONS HLDGS
Howell Deneen CBrooks Steven DHoward Eve NDe Sa PaulMontagner MarcKennedy Sheryl LynnFerguson Lewis HKilmer Henry W