13F Insight
DOSSIER · 13F Holders · Q1 2026Communication Services · Communications Services, NECMost-boughtAI cap-ex
CCOI

COGENT COMMUNICATIONS HLDGS

256 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·256 13F holders·last filed Mar 31, 2026
Market cap
—
▲ 4.9%
vs prior quarter
13F value held
$748M
73.0% inst. owned
of float
Holders
256
-63 QoQ
filers reporting
Activity
+71 / −9
+1,040 added · −930 reduced
this quarter
Concentration
17.83%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q1 2026

256 institutions reported CCOI in Q1 2026. BlackRock, Inc. leads at 17.8% of the visible book. -63 net institutions QoQ — distribution reading.

Top holders

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

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$133M7.1M0.00%Q1 202602
Turtle Creek Asset Management Inc.
CIK 0001484148
$82M4.3M3.07%Q1 202603
Vanguard Portfolio Management
CIK 0002100121· Index
$52M2.7M0.00%Q1 202604
BOSTON FINANCIAL MANGEMENT LLC
CIK 0001053055
$46M597K1.39%Q4 202405
EdgePoint Investment Group Inc.
CIK 0001481669
$43M2.3M0.34%Q1 202606
STATE STREET CORP
CIK 0000093751
$43M2.3M0.00%Q1 202607
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$40M2.1M0.00%Q1 202608
Park West Asset Management LLC
CIK 0001386928
$36M1.9M3.09%Q1 202609
MORGAN STANLEY
CIK 0000895421
$35M1.9M0.00%Q1 202610
Newtyn Management, LLC
CIK 0001569241
$30M1.6M3.22%Q1 202611
Tyro Capital Management LLC
CIK 0001915395
$30M1.6M3.27%Q1 202612
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 0001446194· Market maker
$28M1.5M0.00%Q1 202613
MAGNOLIA GROUP, LLC
CIK 0001618376
$24M1.3M4.52%Q1 202614
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$23M1.2M0.00%Q1 202615
DigitalBridge Group, Inc.
CIK 0001679688
$22M1.1M1.36%Q1 202616
Harspring Capital Management, LLC
CIK 0001652327
$20M1.1M10.77%Q1 202617
BlackBarn Capital Partners LP
CIK 0002010204
$19M1.0M1.52%Q1 202618
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
CIK 0000884546· Index
$14M760K0.00%Q1 202619
GOLDMAN SACHS GROUP INC
CIK 0000886982
$13M713K0.00%Q1 202620
JANE STREET GROUP, LLC
CIK 0001595888· Market maker
$13M701K0.00%Q1 2026
Page 1 of 13
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