What does CUSIP 19239V302 represent in this 13F holders report?

CUSIP 19239V302 is the security identifier for CCOI - COGENT COMMUNICATIONS HOLDINGS, INC. - Common Stock used to aggregate holder disclosures.

How many institutions held CCOI - COGENT COMMUNICATIONS HOLDINGS, INC. - Common Stock in Q1 2026?

229 institutional investors reported CCOI - COGENT COMMUNICATIONS HOLDINGS, INC. - Common Stock for Q1 2026. Use the holders table for investor-level position and value details.

COGENT COMMUNICATIONS HOLDINGS, INC. - Common Stock (CCOI)

CUSIP: 19239V302

Q1 2026 13F Holders as of 31 Mar 2026

Type / Class: Equity / Common Stock
Shares outstanding: 50,110,269
Total 13F shares: 52,717,297
Share change: +4,943,401
Total reported value: $992,651,206
Put/Call ratio: 22%
Price per share: $18.84
Number of holders: 229
Value change: +$86,368,798
Number of buys: 110
Number of sells: 125

Quarterly Holders Quick Answers

What is CUSIP 19239V302?
CUSIP 19239V302 identifies CCOI - COGENT COMMUNICATIONS HOLDINGS, INC. - Common Stock in SEC institutional holdings data.

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Previous quarter: Q4 2025

Recent filing periods for CUSIP 19239V302:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Top shareholders of CCOI - COGENT COMMUNICATIONS HOLDINGS, INC. - Common Stock (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
BlackRock, Inc.	13F 13D/G	Company	14% from 13D/G	7,191,017	$155,038,337	—	31 Dec 2025	13F 13D/G
VANGUARD GROUP INC	13F	Company	11%	5,580,271	$120,310,643	—	31 Dec 2025	13F
Turtle Creek Asset Management Inc.	13D/G 13F	Company	8.2%	4,036,847	$87,034,421	-$12,226,374	31 Dec 2025	13D/G 13F
VANGUARD PORTFOLIO MANAGEMENT LLC	13D/G	Vanguard Portfolio Management	5.6%	2,791,142	$52,585,115	$0	31 Mar 2026	13D/G
EdgePoint Investment Group Inc.	13F	Company	4.6%	2,283,378	$49,229,630	—	31 Dec 2025	13F
STATE STREET CORP	13F	Company	4.1%	2,070,132	$44,632,046	—	31 Dec 2025	13F
Park West Asset Management LLC	13F	Company	2.8%	1,409,096	$30,380,110	—	31 Dec 2025	13F
Harspring Capital Management, LLC	13F	Company	2.8%	1,402,500	$30,237,900	—	31 Dec 2025	13F
Newtyn Management, LLC	13F	Company	2.8%	1,400,000	$30,184,000	—	31 Dec 2025	13F
MORGAN STANLEY	13F	Company	2.5%	1,252,451	$27,002,865	—	31 Dec 2025	13F
MAGNOLIA GROUP, LLC	13F	Company	2.5%	1,246,337	$26,871,026	—	31 Dec 2025	13F
BANK OF AMERICA CORP /DE/	13F	Company	2.4%	1,201,461	$25,903,498	—	31 Dec 2025	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	2.4%	1,179,231	$25,428,854	—	31 Dec 2025	13F
FIRST TRUST ADVISORS LP	13F	Company	2.3%	1,177,398	$25,384,700	—	31 Dec 2025	13F
FMR LLC	13F	Company	1.6%	815,939	$17,591,650	—	31 Dec 2025	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	1.3%	666,932	$14,379,054	—	31 Dec 2025	13F
Broad Run Investment Management, LLC	13F	Company	1.3%	663,700	$14,309,372	—	31 Dec 2025	13F
BlackBarn Capital Partners LP	13F	Company	1.3%	650,000	$14,014,000	—	31 Dec 2025	13F
DigitalBridge Group, Inc.	13F	Company	1.3%	636,169	$13,715,805	—	31 Dec 2025	13F
GOLDMAN SACHS GROUP INC	13F	Company	1.2%	614,549	$13,249,679	—	31 Dec 2025	13F
CenterBook Partners LP	13F	Company	1.2%	601,735	$12,973,407	—	31 Dec 2025	13F
683 Capital Management, LLC	13F	Company	1.2%	600,000	$12,936,000	—	31 Dec 2025	13F
MIG Capital, LLC	13F	Company	1.1%	569,220	$12,272,383	—	31 Dec 2025	13F
Oakum Bay Capital LLC	13F	Company	1.1%	543,582	$11,719,628	—	31 Dec 2025	13F
ROYAL BANK OF CANADA	13F	Company	1%	498,966	$10,758,000	—	31 Dec 2025	13F
NORTHERN TRUST CORP	13F	Company	1%	498,973	$10,757,858	—	31 Dec 2025	13F
GILDER GAGNON HOWE & CO LLC	13F	Company	0.99%	494,108	$10,652,968	—	31 Dec 2025	13F
Palliser Capital (UK) Ltd	13F	Company	0.85%	426,184	$9,188,527	—	31 Dec 2025	13F
FRONTIER CAPITAL MANAGEMENT CO LLC	13F	Company	0.69%	345,803	$7,455,517	—	31 Dec 2025	13F
Man Group plc	13F	Company	0.65%	326,168	$7,032,182	—	31 Dec 2025	13F
D. E. Shaw & Co., Inc.	13F	Company	0.56%	280,136	$6,039,732	—	31 Dec 2025	13F
Bank of New York Mellon Corp	13F	Company	0.55%	276,933	$5,970,669	—	31 Dec 2025	13F
Invesco Ltd.	13F	Company	0.52%	262,068	$5,650,187	—	31 Dec 2025	13F
REAVES W H & CO INC	13F	Company	0.52%	259,098	$5,586,153	—	31 Dec 2025	13F
UBS Group AG	13F	Company	0.5%	248,555	$5,358,846	—	31 Dec 2025	13F
HERALD INVESTMENT MANAGEMENT Ltd	13F	Company	0.48%	242,600	$5,230,456	—	31 Dec 2025	13F
JANE STREET GROUP, LLC	13F	Company	0.47%	236,836	$5,106,184	—	31 Dec 2025	13F
PRINCIPAL FINANCIAL GROUP INC	13F	Company	0.45%	227,044	$4,895,068	—	31 Dec 2025	13F
BOOTHBAY FUND MANAGEMENT, LLC	13F	Company	0.44%	220,028	$4,743,804	—	31 Dec 2025	13F
Granahan Investment Management, LLC	13F	Company	0.43%	217,025	$4,679,059	—	31 Dec 2025	13F
John B. Chang	3/4/5	VP & CHIEF LEGAL OFFICER	0.38%	190,717	$4,640,144	—	31 Dec 2025	3/4/5
Thaddeus G. Weed	3/4/5	VICE PRESIDENT, CFO	0.4%	202,750	$4,588,232	-$706,247	05 Mar 2026	3/4/5
Raymond B. Kummer	3/4/5	CTO Emeritus	— class O/S missing	60,000	$4,560,000	—	03 Jan 2023	3/4/5
Redmond Asset Management, LLC	13F	Company	0.4%	200,082	$4,313,776	—	31 Dec 2025	13F
Legal & General Group Plc	13F	Company	0.4%	198,994	$4,290,310	—	31 Dec 2025	13F
Advisors Asset Management, Inc.	13F	Company	0.36%	181,650	$3,916,374	—	31 Dec 2025	13F
Nishkama Capital, LLC	13F	Company	0.36%	179,661	$3,873,491	—	31 Dec 2025	13F
BLAIR WILLIAM & CO/IL	13F	Company	0.35%	177,655	$3,830,233	—	31 Dec 2025	13F
14B Captial Management LP	13F	Company	0.34%	170,000	$3,665,200	—	31 Dec 2025	13F
Nuveen, LLC	13F	Company	0.34%	169,700	$3,658,732	—	31 Dec 2025	13F

Institutional Holders of COGENT COMMUNICATIONS HOLDINGS, INC. - Common Stock (CCOI) as of Q1 2026

As of 31 Mar 2026, COGENT COMMUNICATIONS HOLDINGS, INC. - Common Stock (CCOI) was held by 229 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 52,717,297 shares. The largest 10 holders included TURTLE CREEK ASSET MANAGEMENT INC., BlackRock, Inc., VANGUARD PORTFOLIO MANAGEMENT LLC, EdgePoint Investment Group Inc., STATE STREET CORP, VANGUARD CAPITAL MANAGEMENT LLC, Park West Asset Management LLC, MORGAN STANLEY, Newtyn Management, LLC, and MAGNOLIA GROUP, LLC. This page lists 229 institutional shareholders reporting positions in this security for the Q1 2026 filing period.

Investor	Option	Weight %	Change %	Value $	* Price	Shares	Share Change	Activity	Report Period

Compare Q1 2026 vs Q4 2025 Across Filers

Q4 2025 holders

245

Q1 2026 holders

229

Holder diff

-16

Investor	Q4 2025 Shares	Q1 2026 Shares	Share Diff	Share Chg %	Q4 2025 Value $	Q1 2026 Value $	Value Diff $	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.