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 2021?

246 institutional investors reported CCOI - COGENT COMMUNICATIONS HOLDINGS, INC. - Common Stock for Q1 2021. Use the holders table for investor-level position and value details.

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

CUSIP: 19239V302

Q1 2021 13F Holders as of 31 Mar 2021

Type / Class: Equity / Common Stock
Shares outstanding: 50,110,269
Total 13F shares: 40,942,777
Share change: -375,932
Total reported value: $2,815,267,382
Put/Call ratio: 17%
Price per share: $68.76
Number of holders: 246
Value change: -$14,940,409
Number of buys: 126
Number of sells: 124

Quarterly Holders Quick Answers

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

Need full ownership history?
Open the full security ownership history page.

Next holder-history checks

These links keep the next click tied to holder verification, nearby quarters, or outside-13F ownership context.

Back to full security ownership history for the broader multi-quarter picture.
Latest 13F filings for newly reported positions across managers.
Latest Schedule 13D/13G reports for ownership changes outside the 13F cadence.
SEC investors directory for manager drilldown.

Explore More Reporting Periods

Jump to adjacent filing periods for faster comparison and easier crawl discovery.

Newer quarter: Q2 2021
Previous quarter: Q4 2020

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 Finance, Inc.	13F	Company	13%	6,486,585	$388,353,000	—	31 Dec 2020	13F
VANGUARD GROUP INC	13F	Company	9.2%	4,630,490	$277,227,000	—	31 Dec 2020	13F
RENAISSANCE TECHNOLOGIES LLC	13F	Company	5.4%	2,697,156	$161,479,000	—	31 Dec 2020	13F
FMR LLC	13F	Company	2.7%	1,376,630	$82,420,000	—	31 Dec 2020	13F
VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P.	13F	Company	2.7%	1,330,604	$79,663,000	—	31 Dec 2020	13F
STATE STREET CORP	13F	Company	2.7%	1,328,878	$79,560,000	—	31 Dec 2020	13F
BROWN ADVISORY INC	13F	Company	2.6%	1,290,511	$77,262,000	—	31 Dec 2020	13F
MIG Capital, LLC	13F	Company	2%	1,007,992	$60,348,000	—	31 Dec 2020	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	1.9%	962,830	$57,643,000	—	31 Dec 2020	13F
Aberdeen Group plc	13F	Company	1.5%	762,154	$45,630,000	—	31 Dec 2020	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	1.4%	710,846	$42,570,000	—	31 Dec 2020	13F
Bank of New York Mellon Corp	13F	Company	1.3%	641,310	$38,394,000	—	31 Dec 2020	13F
BOSTON FINANCIAL MANGEMENT LLC	13F	Company	1.2%	583,968	$34,962,000	—	31 Dec 2020	13F
Allianz Asset Management GmbH	13F	Company	1.1%	557,684	$33,389,000	—	31 Dec 2020	13F
NORTHERN TRUST CORP	13F	Company	1.1%	555,931	$33,283,000	—	31 Dec 2020	13F
WELLS FARGO & COMPANY/MN	13F	Company	1.1%	546,974	$32,748,000	—	31 Dec 2020	13F
Copeland Capital Management, LLC	13F	Company	1.1%	543,231	$32,523,000	—	31 Dec 2020	13F
Zimmer Partners, LP	13F	Company	1%	516,961	$30,950,000	—	31 Dec 2020	13F
NORGES BANK	13F	Company	0.92%	462,538	$27,692,000	—	31 Dec 2020	13F
PRICE T ROWE ASSOCIATES INC /MD/	13F	Company	0.92%	459,115	$27,487,000	—	31 Dec 2020	13F
Natixis Investment Managers International	13F	Company	0.74%	370,275	$22,168,000	—	31 Dec 2020	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	0.69%	345,803	$20,704,000	—	31 Dec 2020	13F
EMERALD ADVISERS, LLC	13F	Company	0.67%	337,638	$20,214,000	—	31 Dec 2020	13F
EMERALD MUTUAL FUND ADVISERS TRUST	13F	Company	0.66%	330,589	$19,792,000	—	31 Dec 2020	13F
MANUFACTURERS LIFE INSURANCE COMPANY, THE	13F	Company	0.62%	312,549	$18,713,000	—	31 Dec 2020	13F
Invesco Ltd.	13F	Company	0.61%	306,905	$18,374,000	—	31 Dec 2020	13F
PRINCIPAL FINANCIAL GROUP INC	13F	Company	0.6%	300,056	$17,964,000	—	31 Dec 2020	13F
SG Capital Management LLC	13F	Company	0.59%	295,842	$17,712,000	—	31 Dec 2020	13F
CENTRAL SECURITIES CORP	13F	Company	0.58%	290,000	$17,362,000	—	31 Dec 2020	13F
Man Group plc	13F	Company	0.57%	283,908	$16,998,000	—	31 Dec 2020	13F
BLAIR WILLIAM & CO/IL	13F	Company	0.55%	277,763	$16,630,000	—	31 Dec 2020	13F
Pacer Advisors, Inc.	13F	Company	0.54%	269,715	$16,148,000	—	31 Dec 2020	13F
BANK OF AMERICA CORP /DE/	13F	Company	0.54%	268,209	$16,058,000	—	31 Dec 2020	13F
HARBER ASSET MANAGEMENT LLC	13F	Company	0.53%	267,431	$16,011,000	—	31 Dec 2020	13F
Skylands Capital, LLC	13F	Company	0.52%	261,250	$15,641,000	—	31 Dec 2020	13F
NATIXIS ADVISORS, LLC	13F	Company	0.51%	254,643	$15,245,000	—	31 Dec 2020	13F
JPMORGAN CHASE & CO	13F	Company	0.5%	250,353	$14,988,000	—	31 Dec 2020	13F
JACOBS LEVY EQUITY MANAGEMENT, INC	13F	Company	0.49%	245,552	$14,701,000	—	31 Dec 2020	13F
PARAMETRIC PORTFOLIO ASSOCIATES LLC	13F	Company	0.48%	240,195	$14,380,000	—	31 Dec 2020	13F
CITADEL ADVISORS LLC	13F	Company	0.48%	240,020	$14,370,000	—	31 Dec 2020	13F
CANADA PENSION PLAN INVESTMENT BOARD	13F	Company	0.44%	219,100	$13,118,000	—	31 Dec 2020	13F
AMERIPRISE FINANCIAL INC	13F	Company	0.43%	217,752	$13,034,000	—	31 Dec 2020	13F
MILLENNIUM MANAGEMENT LLC	13F	Company	0.42%	211,409	$12,657,000	—	31 Dec 2020	13F
DF DENT & CO INC	13F	Company	0.41%	202,977	$12,152,000	—	31 Dec 2020	13F
ROYAL BANK OF CANADA	13F	Company	0.39%	194,662	$11,655,000	—	31 Dec 2020	13F
TimesSquare Capital Management, LLC	13F	Company	0.38%	189,400	$11,339,000	—	31 Dec 2020	13F
MORGAN STANLEY	13F	Company	0.36%	179,122	$10,723,000	—	31 Dec 2020	13F
Nuveen Asset Management, LLC	13F	Company	0.34%	170,624	$10,215,000	—	31 Dec 2020	13F
REAVES W H & CO INC	13F	Company	0.34%	167,888	$10,051,000	—	31 Dec 2020	13F
FORT WASHINGTON INVESTMENT ADVISORS INC /OH/	13F	Company	0.33%	166,639	$9,977,000	—	31 Dec 2020	13F

Institutional Holders of COGENT COMMUNICATIONS HOLDINGS, INC. - Common Stock (CCOI) as of Q1 2021

As of 31 Mar 2021, COGENT COMMUNICATIONS HOLDINGS, INC. - Common Stock (CCOI) was held by 246 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 40,942,777 shares. The largest 10 holders included BlackRock Inc., VANGUARD GROUP INC, RENAISSANCE TECHNOLOGIES LLC, VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P., BROWN ADVISORY INC, STATE STREET CORP, FMR LLC, DIMENSIONAL FUND ADVISORS LP, MIG Capital, LLC, and Standard Life Aberdeen plc. This page lists 246 institutional shareholders reporting positions in this security for the Q1 2021 filing period.

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

Compare Q1 2021 vs Q4 2020 Across Filers

Q4 2020 holders

247

Q1 2021 holders

246

Holder diff

-1

Investor	Q4 2020 Shares	Q1 2021 Shares	Share Diff	Share Chg %	Q4 2020 Value $	Q1 2021 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.