Cogent Communications Holdings CCOI Institutional Ownership

NASDAQ CCOI

$7.79 +0.45 (+6.13%)

At close: Sep 30, 2026 · 4:00 PM EDT

Institutions by Trading Activity

225 Institutions

Increased 121 53.8%

Unchanged 33 14.7%

Reduced 71 31.6%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

100.34%

▼-9.97 pp QoQ

Shares Held by Institutions

48.08Mn

of 47.92Mn outstanding

▼-3.09% QoQ

Shares Outstanding

47.92Mn

-161.75K held outside 13F filers

Institutional Investors

225

filed 13F for Jun 2026

▼-6 vs prior quarter

Net Shares Added (QoQ)

-1.54Mn

distributed since last quarter

Value of Holdings

$374.57Mn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Cogent Communications Holdings, Inc. (NASDAQ:CCOI) has 225 institutional investors with active 13F positions as of June 2026.

These investors collectively held 100.3% of Cogent Communications Holdings's outstanding shares in June 2026, down from 110.3% in March 2026.
Their total shares held in CCOI decreased -3.09% from the prior quarter, while the number of investors in Cogent Communications Holdings decreased 22.95% year over year.
Activity in CCOI broke down as 121 buyers, 71 sellers, and 33 unchanged among 225 total holders.
Institutional investors collectively held 48.08Mn shares in Cogent Communications Holdings as of June 2026, down by 1.54Mn shares quarter on quarter, and up 784.24K shares year over year.
As of June 30, 2026, BlackRock, Inc. held the largest stake in Cogent Communications Holdings with 7.38Mn shares, accounting for 15.39% of total shares outstanding.
Leading buyers of Cogent Communications Holdings shares for the quarter ending June 2026 were Park West Asset Management LLC (1.17Mn), Sixth Street Partners Management Company, L.P. (805.24K), CITADEL ADVISORS LLC (746.26K), State Street Corp (506.1K), AQR CAPITAL MANAGEMENT LLC (405.65K).
The largest sellers of Cogent Communications Holdings for the quarter ending June 2026 were Turtle Creek Asset Management Inc. (4.05Mn), Morgan Stanley (1.26Mn), Harspring Capital Management, LLC (487.58K), D. E. Shaw & Co., Inc. (454.12K), FMR LLC (423.62K).
Per Business Quant data, the top 10 holders of Cogent Communications Holdings for the quarter ending June 2026 are BlackRock, Inc. (7.38Mn), Turtle Creek Asset Management Inc. (4.2Mn), Park West Asset Management LLC (3.11Mn), State Street Corp (2.78Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (2.38Mn), EdgePoint Investment Group Inc. (2.28Mn), VANGUARD CAPITAL MANAGEMENT LLC (2.04Mn), Newtyn Management, LLC (1.66Mn), GEODE CAPITAL MANAGEMENT, LLC (1.25Mn), CITADEL ADVISORS LLC (1.17Mn).

Form 13F Holdings

225 Institutional Holders

Report period 30 Jun, 2026

Total shares held 48.08Mn

Of outstanding 100.34%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	7,376,384	15.39%	▲301,012	+4.25%	$102.38Mn
2	Turtle Creek Asset Management Inc.	0001484148	4,203,527	8.77%	▼4,049,317	-49.07%	$58.34Mn
3	Park West Asset Management LLC	0001386928	3,106,339	6.48%	▲1,171,138	+60.52%	$43.12Mn
4	State Street Corp	0000093751	2,779,367	5.80%	▲506,102	+22.26%	$38.58Mn
5	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	2,384,929	4.98%	▼363,830	-13.24%	$33.10Mn
6	EdgePoint Investment Group Inc.	0001481669	2,283,378	4.76%	0	0.00%	$31.69Mn
7	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	2,037,716	4.25%	▼82,815	-3.91%	$28.28Mn
8	Newtyn Management, LLC	0001569241	1,655,895	3.46%	▲55,895	+3.49%	$22.98Mn
9	GEODE CAPITAL MANAGEMENT, LLC	0001214717	1,245,445	2.60%	▲39,810	+3.30%	$17.29Mn
10	CITADEL ADVISORS LLC	0001423053	1,172,541	2.45%	▲746,261	+175.06%	$16.27Mn
11	MAGNOLIA GROUP, LLC	0001618376	979,686	2.04%	▼310,518	-24.07%	$13.60Mn
12	Goldman Sachs Group Inc	0000886982	973,138	2.03%	▲260,204	+36.50%	$13.51Mn
13	Sixth Street Partners Management Company, L.P.	0001812095	805,244	1.68%	▲805,244	0.00%	$11.18Mn
13	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0000884546	805,244	1.68%	▲45,127	+5.94%	$11.18Mn
14	GILDER GAGNON HOWE & CO LLC	0000902464	783,783	1.64%	▲284,493	+56.98%	$10.88Mn
15	Broad Run Investment Management, LLC	0001568621	660,130	1.38%	▼3,070	-0.46%	$9.16Mn
16	Morgan Stanley	0000895421	627,593	1.31%	▼1,255,479	-66.67%	$8.71Mn
17	AQR CAPITAL MANAGEMENT LLC	0001167557	615,561	1.28%	▲405,652	+193.25%	$8.54Mn
18	Harspring Capital Management, LLC	0001652327	599,418	1.25%	▼487,582	-44.86%	$8.32Mn
19	HRT FINANCIAL LP	0001475597	557,674	1.16%	▲48,579	+9.54%	$7.74K

Showing 1 to 20 of 225 holders