Cogent Communications HoldinCCOI
13F holders, Q2 2026 (June 30)224holders −9
40new positions
47sold out
6famous investors
$13.88avg. 13F price*
At the end of Q2 2026, 224 institutions reported holding Cogent Communications Holdin (CCOI) in their 13F filings, down 9 from Q1 2026. 40 opened new positions and 47 sold out. The largest holders were BlackRock, Inc. ($102.4M), Turtle Creek Asset Management Inc. ($58.3M) and Park West Asset Management LLC ($43.1M). 6 famous investors held it, including Ken Griffin (0.0% of Citadel Advisors's portfolio), Paul Tudor Jones (0.0% of Tudor Investment Corporation's portfolio) and Cliff Asness (0.0% of AQR Capital Management's portfolio).
- Company
- Cogent Communications Holdin
- CUSIP
- 19239V302
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2026 → Q2 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 40 | $22.9M |
| Exits | 47 | $43.2M |
All 13F filers, Q1 2026 → Q2 2026: 6,944,025 shares bought and 7,701,795 shares sold, net −757,770 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 224 holders
| BlackRock, Inc. | 0.00% | Add +4.3% | 7,376,384 | $102.4M |
| Turtle Creek Asset Management Inc. | 2.28% | Reduce -3.3% | 4,203,527 | $58.3M |
| Park West Asset Management LLC | 2.95% | Add +60.5% | 3,106,339 | $43.1M |
| State Street Corp. | 0.00% | Add +22.3% | 2,779,367 | $38.6M |
| Vanguard Portfolio Management LLC | 0.00% | Reduce -13.2% | 2,384,929 | $33.1M |
| EdgePoint Investment Group Inc. | 0.24% | No change | 2,283,378 | $31.7M |
| Vanguard Capital Management LLC | 0.00% | Reduce -3.9% | 2,037,716 | $28.3M |
| Newtyn Management, LLC | 2.87% | Add +3.5% | 1,655,895 | $23.0M |
| Geode Capital Management, LLC | 0.00% | Add +3.3% | 1,245,445 | $17.3M |
| Citadel Advisors | 0.01% | Add +175.1% | 1,172,541 | $16.3M |
| Magnolia Group, LLC | 2.86% | Reduce -24.1% | 979,686 | $13.6M |
| Goldman Sachs Group Inc. | 0.00% | Add +36.5% | 973,138 | $13.5M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +5.9% | 805,244 | $11.2M |
| Gilder Gagnon Howe & Co. LLC | 0.11% | Add +57.0% | 783,783 | $10.9M |
| Broad Run Investment Management, LLC | 1.41% | Reduce -0.5% | 660,130 | $9.2M |
| Morgan Stanley | 0.00% | Reduce -66.7% | 627,593 | $8.7M |
| AQR Capital Management | 0.00% | Add +193.3% | 615,561 | $8.5M |
| Harspring Capital Management, LLC | 15.49% | Reduce -44.9% | 599,418 | $8.3M |
| HRT Financial LP | 0.01% | Add +9.5% | 557,674 | $7.7M |
| Northern Trust Corp. | 0.00% | Add +3.9% | 516,683 | $7.2M |
| UBS Group AG | 0.00% | Add +20.3% | 512,618 | $7.1M |
| CenterBook Partners LP | 0.34% | Add +1.9% | 503,457 | $7.0M |
| AYAL Capital Advisors Ltd | 2.84% | New | 400,000 | $5.6M |
| Frontier Capital Management Co. LLC | 0.05% | Reduce -4.2% | 382,608 | $5.3M |
| Vanguard Fiduciary Trust Co. | 0.00% | Add +2.9% | 344,108 | $4.8M |
| BNP Paribas Financial Markets | 0.00% | Add +321.7% | 328,127 | $4.6M |
| Granahan Investment Management, LLC | 0.15% | Reduce -4.7% | 302,653 | $4.2M |
| PDT Partners, LLC | 0.22% | Add +4.5% | 296,439 | $4.1M |
| D. E. Shaw & Co. | 0.00% | Reduce -61.5% | 284,694 | $4.0M |
| Susquehanna International Group, LLP | 0.00% | Add +115.8% | 280,790 | $3.9M |
| Invesco Ltd. | 0.00% | Add +10.9% | 268,923 | $3.7M |
| FourWorld Capital Management LLC | 4.71% | No change | 265,500 | $3.7M |
| Bank of New York Mellon Corp | 0.00% | Add +0.3% | 265,490 | $3.7M |
| JPMorgan Chase & Co. | 0.00% | Reduce -45.7% | 267,486 | $3.5M |
| Bank of America Corp. | 0.00% | Reduce -15.7% | 254,861 | $3.5M |
| Jump Financial, LLC | 0.03% | New | 251,745 | $3.5M |
| BlackBarn Capital Partners LP | 0.86% | Reduce -50.0% | 250,000 | $3.5M |
| HERALD INVESTMENT MANAGEMENT Ltd | 0.46% | No change | 242,600 | $3.4M |
| MYDA Advisors LLC | 0.82% | New | 240,000 | $3.3M |
| Palliser Capital (UK) Ltd | 1.76% | Reduce -29.3% | 236,393 | $3.3M |
| Principal Financial Group Inc. | 0.00% | Add +0.6% | 233,633 | $3.2M |
| Squarepoint Ops LLC | 0.01% | Add +341.1% | 226,035 | $3.1M |
| XTX Topco Ltd | 0.04% | Add +651.2% | 220,290 | $3.1M |
| Nuveen, LLC | 0.00% | Add +0.8% | 169,874 | $2.4M |
| FMR LLC | 0.00% | Reduce -72.0% | 165,173 | $2.3M |
| Public Sector Pension Investment Board | 0.01% | Reduce -3.3% | 164,109 | $2.3M |
| Global Endowment Management, LP | 0.22% | Add +759.9% | 158,582 | $2.2M |
| Y-Intercept (Hong Kong) Ltd | 0.04% | New | 154,019 | $2.1M |
| Caxton Associates LLP | 0.04% | Add +174.4% | 145,106 | $2.0M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +4.7% | 143,160 | $2.0M |
| Tudor Investment Corporation | 0.01% | Reduce -0.3% | 139,269 | $1.9M |
| Blair William & Co. | 0.00% | Reduce -19.3% | 134,381 | $1.9M |
| Algert Global LLC | 0.02% | New | 132,470 | $1.8M |
| LPL Financial LLC | 0.00% | Add +35.0% | 122,316 | $1.7M |
| Millennium Management | 0.00% | Reduce -47.8% | 119,138 | $1.7M |
| Rhumbline Advisers | 0.00% | Reduce -13.8% | 118,915 | $1.7M |
| Boothbay Fund Management, LLC | 0.03% | Reduce -68.8% | 118,403 | $1.6M |
| Advisors Asset Management, Inc. | 0.02% | Reduce -23.6% | 114,375 | $1.6M |
| Legal & General Group Plc | 0.00% | Reduce -3.5% | 102,920 | $1.4M |
| Skylands Capital, LLC | 0.17% | Add +43.4% | 98,425 | $1.4M |
| Swiss National Bank | 0.00% | Add +1.0% | 98,000 | $1.4M |
| WINTON GROUP Ltd | 0.04% | Add +27.0% | 89,009 | $1.2M |
| Schonfeld Strategic Advisors LLC | 0.01% | New | 86,639 | $1.2M |
| Ameriprise Financial Inc. | 0.00% | Reduce -3.6% | 77,824 | $1.1M |
| State of Wisconsin Investment Board | 0.00% | Add +1.6% | 75,678 | $1.1M |
| T. Rowe Price Associates Inc. | 0.00% | Add +18.6% | 73,289 | $1.0M |
| Wells Fargo & Company | 0.00% | Reduce -29.2% | 69,899 | $970K |
| Jane Street Group, LLC | 0.00% | Reduce -74.9% | 69,619 | $966K |
| New York State Teachers Retirement System | 0.00% | Reduce -0.8% | 68,710 | $954K |
| Alliancebernstein L.P. | 0.00% | No change | 50,321 | $948K |
| Brown Advisory Inc. | 0.00% | Add +1.9% | 57,476 | $798K |
| Deutsche Bank AG | 0.00% | Add +14.8% | 56,728 | $787K |
| Acadian Asset Management LLC | 0.00% | New | 56,536 | $781K |
| California State Teachers Retirement System | 0.00% | Add +18.5% | 54,179 | $752K |
| Citigroup Inc. | 0.00% | Add +26.9% | 53,544 | $743K |
| IMC-Chicago, LLC | 0.01% | Add +9.4% | 50,535 | $701K |
| Prudential Financial Inc. | 0.00% | Add +1.3% | 50,175 | $696K |
| Renaissance Technologies | 0.00% | Reduce -26.7% | 49,231 | $683K |
| Victory Capital Management Inc. | 0.00% | Add +137.7% | 46,394 | $644K |
| Quantinno Capital Management LP | 0.00% | Reduce -58.5% | 45,220 | $628K |
| Engineers Gate Manager LP | 0.01% | Add +43.2% | 41,960 | $582K |
| Oppenheimer & Co. Inc. | 0.01% | Add +55.7% | 41,501 | $576K |
| CANADA LIFE ASSURANCE Co | 0.00% | No change | 39,225 | $544K |
| New Age Alpha Advisors, LLC | 0.02% | New | 37,712 | $523K |
| Numerai GP LLC | 0.04% | New | 36,370 | $505K |
| ExodusPoint Capital Management, LP | 0.00% | Reduce -34.7% | 34,982 | $486K |
| Salvus Wealth Management, LLC | 0.27% | Reduce -8.2% | 34,826 | $483K |
| Occudo Quantitative Strategies LP | 0.02% | New | 33,639 | $467K |
| PNC Financial Services Group, Inc. | 0.00% | Add +0.4% | 32,422 | $450K |
| Group One Trading LLC | 0.01% | New | 31,841 | $442K |
| Thrivent Financial for Lutherans | 0.00% | Reduce -1.0% | 31,369 | $435K |
| VANGUARD ASSET MANAGEMENT, Ltd | 0.00% | No change | 30,615 | $425K |
| Creative Planning | 0.00% | Add +27.1% | 29,616 | $411K |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0.00% | Add +21.6% | 28,773 | $399K |
| MetLife Investment Management, LLC | 0.00% | Add +4.3% | 28,551 | $396K |
| Barclays PLC | 0.00% | Add +26.3% | 28,294 | $393K |
| Lazard Asset Management LLC | 0.00% | New | 26,582 | $369K |
| Prairieview Wealth Partners, LLC | 0.27% | Reduce -13.4% | 25,742 | $357K |
| Shrier Wealth Management, LLC | 0.11% | Add +33.1% | 23,453 | $326K |
| Texas Yale Capital Corp. | 0.01% | No change | 23,000 | $319K |
"% of holder's portfolio" is CCOI's weight in each manager's 13F, not the share of Cogent Communications Holdin the manager owns.