CCOI Institutional Ownership & Shareholders
COGENT COMMUNICATIONS HOLDIN (CCOI) is currently held by 210 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $666.49M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of CCOI tracked by InsiderSet, reporting ownership valued at approximately $102.38M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $49.72M, representing an estimated loss of -51.44% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 59% of the total disclosed CCOI value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Turtle Creek Asset Management, Park West Asset Management Llc, and several other long-term asset managers with concentrated positions in COGENT COMMUNICATIONS HOLDIN (CCOI).
This page ranks the largest institutional CCOI shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
210
Total Reported Value
$666.49M
Largest Holder
Blackrock, Inc.
Largest Position
$102.38M
Insider Transactions (90d)
9
Latest Filing Quarter
Q2 2026
New Institutional Positions
58
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.00% | 7,376,384 | $102,384,215 | $49,716,828 | -$52,667,387 | -51.44% | |
| Turtle Creek Asset Management | Andrew Brenton | 2.28% | 4,203,527 | $58,344,955 | $28,331,772 | -$30,013,183 | -51.44% |
| Park West Asset Management Llc | 2.95% | 3,106,339 | $43,115,985 | $20,936,725 | -$22,179,260 | -51.44% | |
| State Street Corp | 0.00% | 2,779,367 | $38,577,614 | $18,732,934 | -$19,844,680 | -51.44% | |
| Vanguard Portfolio Management Llc | 0.00% | 2,384,929 | $33,102,815 | $16,074,421 | -$17,028,394 | -51.44% | |
| Edgepoint Investment Group Inc. | 0.24% | 2,283,378 | $31,693,287 | $15,389,968 | -$16,303,319 | -51.44% | |
| Vanguard Capital Management Llc | 0.00% | 2,037,716 | $28,283,498 | $13,734,206 | -$14,549,292 | -51.44% | |
| Newtyn Management, Llc | 2.87% | 1,655,895 | $22,983,823 | $11,160,732 | -$11,823,091 | -51.44% | |
| Geode Capital Management, Llc | 0.00% | 1,245,445 | $17,290,622 | $8,394,299 | -$8,896,323 | -51.45% | |
| Citadel Advisors Llc | 0.01% | 1,172,541 | $16,274,869 | $7,902,926 | -$8,371,943 | -51.44% | |
| Advisors Asset Management, Inc. | 0.22% | 208,224 | $15,237,832 | $1,403,430 | -$13,834,402 | -90.79% | |
| Magnolia Group, Llc | 2.86% | 979,686 | $13,598,042 | $6,603,084 | -$6,994,958 | -51.44% | |
| Goldman Sachs Group Inc | 0.00% | 973,138 | $13,507,153 | $6,558,950 | -$6,948,203 | -51.44% | |
| Oakum Bay Capital Llc | 6.98% | 690,374 | $13,006,646 | $4,653,121 | -$8,353,525 | -64.23% | |
| Charles Schwab Investment Management Inc | 0.00% | 805,244 | $11,176,787 | $5,427,345 | -$5,749,442 | -51.44% | |
| Gilder Gagnon Howe & Co Llc | 0.11% | 783,783 | $10,878,908 | $5,282,697 | -$5,596,211 | -51.44% | |
| Broad Run Investment Management, Llc | 1.41% | 660,130 | $9,162,604 | $4,449,276 | -$4,713,328 | -51.44% | |
| Morgan Stanley | 0.00% | 627,593 | $8,711,004 | $4,229,977 | -$4,481,027 | -51.44% | |
| Aqr Capital Management Llc | 0.00% | 615,561 | $8,543,988 | $4,148,881 | -$4,395,107 | -51.44% | |
| Harspring Capital Management, Llc | 15.49% | 599,418 | $8,319,922 | $4,040,077 | -$4,279,845 | -51.44% | |
| Hrt Financial Lp | 0.01% | 557,674 | $7,740,000 | $3,758,723 | -$3,981,277 | -51.44% | |
| Northern Trust Corp | 0.00% | 516,683 | $7,171,559 | $3,482,443 | -$3,689,116 | -51.44% | |
| Ubs Group Ag | 0.00% | 512,618 | $7,115,138 | $3,455,045 | -$3,660,093 | -51.44% | |
| Ayal Capital Advisors Ltd | 2.84% | 400,000 | $5,552,000 | $2,696,000 | -$2,856,000 | -51.44% | |
| Frontier Capital Management Co Llc | 0.05% | 382,608 | $5,310,595 | $2,578,778 | -$2,731,817 | -51.44% | |
| Vanguard Fiduciary Trust Co | 0.00% | 344,108 | $4,776,219 | $2,319,288 | -$2,456,931 | -51.44% | |
| Bnp Paribas Financial Markets | 0.00% | 328,127 | $4,554,403 | $2,211,576 | -$2,342,827 | -51.44% | |
| Granahan Investment Management, Llc | 0.15% | 302,653 | $4,200,824 | $2,039,881 | -$2,160,943 | -51.44% | |
| Pdt Partners, Llc | 0.22% | 296,439 | $4,114,573 | $1,997,999 | -$2,116,574 | -51.44% | |
| D. E. Shaw & Co., Inc. | 0.00% | 284,694 | $3,951,553 | $1,918,838 | -$2,032,715 | -51.44% | |
| Susquehanna International Group, Llp | 0.00% | 280,790 | $3,897,365 | $1,892,525 | -$2,004,840 | -51.44% | |
| Invesco Ltd. | 0.00% | 268,923 | $3,732,651 | $1,812,541 | -$1,920,110 | -51.44% | |
| Fourworld Capital Management Llc | 4.26% | 265,500 | $3,685,140 | $1,789,470 | -$1,895,670 | -51.44% | |
| Bank Of New York Mellon Corp | 0.00% | 265,490 | $3,685,000 | $1,789,403 | -$1,895,597 | -51.44% | |
| Jpmorgan Chase & Co | 0.00% | 267,486 | $3,545,199 | $1,802,856 | -$1,742,343 | -49.15% | |
| Bank Of America Corp | 0.00% | 254,861 | $3,537,471 | $1,717,763 | -$1,819,708 | -51.44% | |
| Jump Financial, Llc | 0.03% | 251,745 | $3,494,220 | $1,696,761 | -$1,797,459 | -51.44% | |
| Blackbarn Capital Partners Lp | 0.86% | 250,000 | $3,470,000 | $1,685,000 | -$1,785,000 | -51.44% | |
| Myda Advisors Llc | 0.81% | 240,000 | $3,331,200 | $1,617,600 | -$1,713,600 | -51.44% | |
| Palliser Capital (Uk) Ltd | 1.76% | 236,393 | $3,281,135 | $1,593,289 | -$1,687,846 | -51.44% | |
| Squarepoint Ops Llc | 0.01% | 226,035 | $3,137,366 | $1,523,476 | -$1,613,890 | -51.44% | |
| Xtx Topco Ltd | 0.04% | 220,290 | $3,057,625 | $1,484,755 | -$1,572,870 | -51.44% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.00% | 136,701 | $2,575,448 | $921,365 | -$1,654,083 | -64.23% | |
| Nuveen, Llc | 0.00% | 169,874 | $2,357,852 | $1,144,951 | -$1,212,901 | -51.44% | |
| Fmr Llc | 0.00% | 165,173 | $2,292,597 | $1,113,266 | -$1,179,331 | -51.44% | |
| Public Sector Pension Investment Board | 0.01% | 164,109 | $2,277,833 | $1,106,095 | -$1,171,738 | -51.44% | |
| Global Endowment Management, Lp | 0.22% | 158,582 | $2,201,000 | $1,068,843 | -$1,132,157 | -51.44% | |
| Caxton Associates Llp | 0.04% | 145,106 | $2,014,071 | $978,014 | -$1,036,057 | -51.44% | |
| Tudor Investment Corp Et Al | 0.01% | 139,269 | $1,933,054 | $938,673 | -$994,381 | -51.44% | |
| Blair William & Co/Il | 0.00% | 134,381 | $1,865,209 | $905,728 | -$959,481 | -51.44% |
Frequently asked questions about CCOI
Who are the largest institutional holders of CCOI?
The largest institutional holders of CCOI reported in the latest SEC Form 13F filings include Blackrock, Inc., Turtle Creek Asset Management, Park West Asset Management Llc, State Street Corp, and Vanguard Portfolio Management Llc. InsiderSet ranks institutional holders by their latest reported CCOI position.
What is CCOI institutional ownership?
This page tracks CCOI positions reported by institutional investment managers through SEC Form 13F. COGENT COMMUNICATIONS HOLDIN (CCOI) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own CCOI?
InsiderSet currently tracks 210 institutional managers reporting CCOI holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of CCOI shareholders.
How much CCOI stock do institutions own?
Institutional investment managers disclosed approximately $666.49M in CCOI holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was CCOI institutional ownership last updated?
The latest CCOI institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional CCOI holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its CCOI position after the reporting date.
Are institutions buying or selling CCOI?
Institutional buying and selling can be analyzed by comparing CCOI positions across consecutive 13F reporting periods. InsiderSet's CCOI Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View CCOI ownership changes.
How has CCOI institutional ownership changed over time?
InsiderSet tracks CCOI institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.