Ticker · CUSIP 19239V302

CCOI

COGENT COMMUNICATIONS HLDGS

Communication Services·Telecom Services

···Share

Holders (tracked)

Combined shares

1,149,667

Combined value

$24.79M

Last close

$23.63

Quarter

2025Q4

Price is +9.6% vs the avg quarter-end implied price across tracked holders.

Price · 1Y$23.63-26.79 (-53.14%)H $53.62 · L $16.65 · Avg Vol 1.2M

Tracked holders · last 8 quarters

+5 vs previous quarter over the last 8.

SEC event timeline

15 events

T. Rowe Price added2026-02-17
+11,362 shares · 2025Q4
Position
Ken Griffin (Citadel Advisors) added2026-02-17
+85,219 shares · 2025Q4
Position
D.E. Shaw & Co. trimmed2026-02-17
−112,993 shares · 2025Q4
Position
AQR Capital Management trimmed2026-02-17
−2,391 shares · 2025Q4
Position
Izzy Englander (Millennium Mgmt) trimmed2026-02-17
−40,956 shares · 2025Q4
Position
Steve Cohen (Point72) opened position2026-02-17
+105,100 shares · 2025Q4
Position
Paul Tudor Jones (Tudor Investment) opened position2026-02-17
+24,600 shares · 2025Q4
Position
Ray Dalio (Bridgewater Associates) opened position2026-02-13
+12,963 shares · 2025Q4
Position
Renaissance Technologies trimmed2026-02-12
−98,956 shares · 2025Q4
Position
D.E. Shaw & Co. opened position2025-11-14
+393,129 shares · 2025Q3
Position
T. Rowe Price added2025-11-14
+1,625 shares · 2025Q3
Position
AQR Capital Management added2025-11-14
+27,075 shares · 2025Q3
Position
Izzy Englander (Millennium Mgmt) added2025-11-14
+58,700 shares · 2025Q3
Position
Renaissance Technologies trimmed2025-11-13
−270,069 shares · 2025Q3
Position
Norges Bank (Norway SWF) trimmed2025-11-12
−82,143 shares · 2024Q3
Position

Insider activity

No insider transactions in the last 30 days.

View full insider history for CCOI →

Follow-the-investor returns

If you'd copied each holder of CCOI…

Cost basis inferred from each manager's quarter-over-quarter position changes. Sorted by % return on the position they're still holding.

Investor	First in	Cost basis	Return	Position value today
D.E. Shaw & Co.	2016Q3	$22.42	+5.4%	$435K
D.E. Shaw & Co.	2016Q3	$22.42	+5.4%	$435K
D.E. Shaw & Co.	2016Q3	$22.42	+5.4%	$435K
Steve Cohen (Point72)	2019Q2	$23.04	+2.6%	$1.3M
Steve Cohen (Point72)	2019Q2	$23.04	+2.6%	$1.3M
Paul Tudor Jones (Tudor Investment)	2017Q1	$35.51	-33.5%	$279K
Paul Tudor Jones (Tudor Investment)	2017Q1	$35.51	-33.5%	$279K
Ken Griffin (Citadel Advisors)	2016Q1	$40.40	-41.5%	$3.6M
Ken Griffin (Citadel Advisors)	2016Q1	$40.40	-41.5%	$3.6M
Ken Griffin (Citadel Advisors)	2016Q1	$40.40	-41.5%	$3.6M
AQR Capital Management	2016Q2	$42.25	-44.1%	$703K
Izzy Englander (Millennium Mgmt)	2016Q2	$44.60	-47.0%	$916K
Renaissance Technologies	2016Q1	$45.15	-47.7%	$2.1M
T. Rowe Price	2016Q1	$53.80	-56.1%	$1.2M
Ray Dalio (Bridgewater Associates)	2023Q1	$63.72	-62.9%	$306K

Who moved on this name in 2025Q4

Position changes reported for the latest quarter, grouped by direction.

New positions3

Steve Cohen (Point72)
+105,100
$2.3M
Paul Tudor Jones (Tudor Investment)
+24,600
$530K
Ray Dalio (Bridgewater Associates)
+12,963
$279K

Added to2

Ken Griffin (Citadel Advisors)
+85,219
$1.8M
T. Rowe Price
+11,362
$245

Trimmed4

D.E. Shaw & Co.
−112,993
$2.4M
Renaissance Technologies
−98,956
$2.1M
Izzy Englander (Millennium Mgmt)
−40,956
$883K
AQR Capital Management
−2,391
$52K

Exited0

—

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.

Quarter	Holders	Shares	Combined value	Δ holders
2022Q1	8	10,093,012	$24.33B	—
2022Q2	8	11,119,515	$22.78B	—
2022Q3	9	11,022,641	$574.9M	+1
2022Q4	11	10,864,701	$620.2M	+2
2023Q1	11	10,503,128	$669.3M	—
2023Q2	10	10,257,098	$690.2M	-1
2023Q3	11	9,935,121	$615.0M	+1
2023Q4	9	10,590,405	$805.5M	-2
2024Q1	9	9,363,340	$611.7M	—
2024Q2	7	8,269,008	$466.7M	-2
2024Q3	11	1,899,225	$144.2M	+4
2024Q4	10	1,266,194	$97.6M	-1
2025Q1	7	901,475	$55.3M	-3
2025Q2	10	954,999	$46.0M	+3
2025Q3	10	1,038,119	$39.8M	—
2025Q4	15	1,149,667	$24.8M	+5

Who owns CCOI

15 super-investors · 2025Q4

Tracked stake

1.15M

Combined value

$25M

% of shares outstanding

—

shares-out unknown

Quarter action mix

New5Added4Trim6

#	Manager	Shares	Value	% of book	Last action
1	D.E. Shaw & Co.	280.1K	$6M	0.0%	Trim−113.0K
2	Ken Griffin Citadel Advisors	167.1K	$4M	0.0%	Added+85.2K
3	Ken Griffin Citadel Advisors	154.1K	$3M	0.0%	Added+85.2K
4	Ken Griffin Citadel Advisors	149.4K	$3M	0.0%	Added+85.2K
5	Renaissance Technologies	89.0K	$2M	0.0%	Trim−99.0K
6	Steve Cohen Point72	56.3K	$1M	0.0%	New+105.1K
7	T. Rowe Price	51.3K	$1M	0.0%	Added+11.4K
8	Steve Cohen Point72	48.8K	$1M	0.0%	New+105.1K
9	Izzy Englander Millennium Mgmt	38.8K	$836K	0.0%	Trim−41.0K
10	AQR Capital Management	29.7K	$641K	0.0%	Trim−2.4K
11	D.E. Shaw & Co.	29.0K	$625K	0.0%	Trim−113.0K
12	D.E. Shaw & Co.	18.4K	$397K	0.0%	Trim−113.0K
13	Ray Dalio Bridgewater Associates	13.0K	$279K	0.0%	New+13.0K
14	Paul Tudor Jones Tudor Investment	12.8K	$276K	0.0%	New+24.6K
15	Paul Tudor Jones Tudor Investment	11.8K	$254K	0.0%	New+24.6K

Recent moves

20 transactions

ADDT. Rowe Price
+11,362 · 2025Q4
NEWPaul Tudor Jones (Tudor Investment)
+24,600 · 2025Q4
TRIMD.E. Shaw & Co.
−112,993 · 2025Q4
TRIMIzzy Englander (Millennium Mgmt)
−40,956 · 2025Q4
TRIMAQR Capital Management
−2,391 · 2025Q4
NEWSteve Cohen (Point72)
+105,100 · 2025Q4
ADDKen Griffin (Citadel Advisors)
+85,219 · 2025Q4
NEWRay Dalio (Bridgewater Associates)
+12,963 · 2025Q4
TRIMRenaissance Technologies
−98,956 · 2025Q4
NEWD.E. Shaw & Co.
+393,129 · 2025Q3
ADDAQR Capital Management
+27,075 · 2025Q3
ADDT. Rowe Price
+1,625 · 2025Q3
ADDIzzy Englander (Millennium Mgmt)
+58,700 · 2025Q3
TRIMRenaissance Technologies
−270,069 · 2025Q3
TRIMNorges Bank (Norway SWF)
−82,143 · 2024Q3
TRIMIzzy Englander (Millennium Mgmt)
−14,660 · 2025Q2
ADDT. Rowe Price
+3,184 · 2025Q2
ADDAQR Capital Management
+1,750 · 2025Q2
TRIMRenaissance Technologies
−186,359 · 2025Q2
ADDIzzy Englander (Millennium Mgmt)
+31,171 · 2025Q1

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