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 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Reduce -0.7% | 22,712 | $315K |
| Mirabella Financial Services LLP | 0.03% | New | 22,156 | $308K |
| Jupiter Topco LLC | 0.00% | — | 21,111 | $293K |
| Louisiana State Employees Retirement System | 0.00% | Reduce -0.5% | 20,900 | $290K |
| First Citizens Bank & Trust Co. | 0.00% | Add +70.5% | 20,855 | $289K |
| SG Americas Securities, LLC | 0.00% | Reduce -56.4% | 20,789 | $289K |
| Landscape Capital Management, L.L.C. | 0.02% | Reduce -44.4% | 20,259 | $281K |
| Clear Harbor Asset Management, LLC | 0.02% | Reduce -17.4% | 20,246 | $281K |
| Envestnet Portfolio Solutions, Inc. | 0.00% | Add +71.2% | 20,060 | $278K |
| Russell Investments Group, Ltd. | 0.00% | Reduce -53.6% | 19,999 | $278K |
| Manufacturers Life Insurance Company, The | 0.00% | Reduce -0.2% | 19,957 | $277K |
| Brevan Howard Capital Management LP | 0.00% | Reduce -18.6% | 19,657 | $273K |
| RBF Capital, LLC | 0.01% | Reduce -2.5% | 19,500 | $271K |
| Guggenheim Capital LLC | 0.00% | Reduce -3.6% | 18,935 | $263K |
| State of Tennessee, Department of Treasury | 0.00% | Add +70.3% | 18,449 | $256K |
| Quantbot Technologies LP | 0.01% | New | 18,267 | $254K |
| Vanguard Global Advisers, LLC | 0.00% | No change | 18,071 | $251K |
| Twinbeech Capital LP | 0.04% | Add +8.3% | 17,769 | $247K |
| Natixis | 0.00% | New | 17,200 | $239K |
| State of Alaska, Department of Revenue | 0.00% | Reduce -31.2% | 17,088 | $236K |
| Mercer Global Advisors Inc. | 0.00% | Add +6.4% | 16,595 | $230K |
| New York State Common Retirement Fund | 0.00% | No change | 15,769 | $219K |
| Cetera Investment Advisers | 0.00% | Add +0.8% | 15,718 | $218K |
| Pekin Hardy Strauss, Inc. | 0.02% | Add +19.3% | 15,450 | $214K |
| Simplex Trading, LLC | 0.01% | Reduce -83.7% | 14,966 | $208K |
| Entropy Technologies, LP | 0.01% | New | 14,932 | $207K |
| Rangeley Capital, LLC | 0.19% | New | 14,000 | $194K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 13,586 | $189K |
| Arizona State Retirement System | 0.00% | Reduce -0.1% | 13,479 | $187K |
| Vanguard Investments Australia, Ltd. | 0.00% | Add +22.4% | 13,379 | $186K |
| Quadrature Capital Ltd | 0.00% | Reduce -48.5% | 13,228 | $184K |
| Amalgamated Bank | 0.00% | Reduce -6.0% | 12,890 | $179K |
| Yousif Capital Management, LLC | 0.00% | Add +1.0% | 12,743 | $177K |
| Raymond James Financial Inc. | 0.00% | New | 12,710 | $176K |
| Walleye Capital LLC | 0.00% | Reduce -94.9% | 12,270 | $170K |
| Two Sigma Investments, LP | 0.00% | New | 11,747 | $163K |
| Teachers Retirement System of the State of Kentucky | 0.00% | No change | 11,754 | $163K |
| Cerity Partners LLC | 0.00% | New | 11,455 | $159K |
| Commonwealth of Pennsylvania Public School Empls Retrmt SYS | 0.00% | Reduce -3.5% | 11,328 | $157K |
| Intech Investment Management LLC | 0.00% | Reduce -1.9% | 11,270 | $156K |
| Inspire Advisors, LLC | 0.01% | New | 11,164 | $156K |
| Arax Advisory Partners | 0.00% | Add +1166.6% | 11,007 | $153K |
| Fifth Third Bancorp | 0.00% | Reduce -2.6% | 10,818 | $150K |
| Oregon Public Employees Retirement Fund | 0.00% | No change | 10,816 | $150K |
| KLP Kapitalforvaltning As | 0.00% | No change | 10,300 | $143K |
| PFG Investments, LLC | 0.01% | Add +0.0% | 10,257 | $142K |
| BTG Pactual Asset Management US LLC | 0.01% | New | 10,200 | $142K |
| Wealth Enhancement Advisory Services, LLC | 0.00% | New | 11,172 | $141K |
| Royal Bank of Canada | 0.00% | Add +30.6% | 7,112 | $99K |
| Inspire Investing, LLC | 0.00% | Add +30.6% | 6,593 | $92K |
| Public Employees Retirement Association of Colorado | 0.00% | No change | 6,256 | $87K |
| Ameritas Investment Partners, Inc. | 0.00% | Add +18.9% | 4,476 | $62K |
| Fulcrum Asset Management LLP | 0.01% | New | 4,642 | $61K |
| Farther Finance Advisors, LLC | 0.00% | Add +5.5% | 4,086 | $57K |
| Nisa Investment Advisors, LLC | 0.00% | Reduce -28.0% | 3,923 | $54K |
| Ensign Peak Advisors, Inc | 0.00% | Reduce -19.5% | 3,309 | $46K |
| Towarzystwo Funduszy Inwestycyjnych Pzu SA | 0.01% | Add +23.1% | 3,300 | $46K |
| SBI Securities Co., Ltd. | 0.00% | Add +32.3% | 3,254 | $45K |
| Osaic Holdings, Inc. | 0.00% | Add +123.4% | 2,569 | $36K |
| US Bancorp \de | 0.00% | Reduce -1.1% | 2,358 | $33K |
| North Star Investment Management Corp. | 0.00% | No change | 2,298 | $32K |
| Nykredit A/S | 0.00% | — | 2,298 | $32K |
| Tower Research Capital LLC (TRC) | 0.00% | Reduce -55.2% | 2,094 | $29K |
| Caitlin John, LLC | 0.01% | Add +34.9% | 1,954 | $27K |
| Public Employees Retirement System of Ohio | 0.00% | Add +36.2% | 1,881 | $26K |
| KBC Group NV | 0.00% | No change | 1,761 | $24K |
| Federation des caisses Desjardins du Quebec | 0.00% | Reduce -48.5% | 1,570 | $22K |
| Security National Bank | 0.00% | No change | 1,500 | $21K |
| Allworth Financial LP | 0.00% | Add +254.5% | 1,340 | $19K |
| Hantz Financial Services, Inc. | 0.00% | Reduce -60.8% | 1,081 | $15K |
| Pinnacle Wealth Planning Services, Inc. | 0.00% | Reduce -24.4% | 1,016 | $14K |
| Harbor Capital Advisors, Inc. | 0.00% | Reduce -5.9% | 979 | $14K |
| Caitong International Asset Management Co., Ltd | 0.00% | Reduce -9.7% | 892 | $12K |
| Versant Capital Management, Inc | 0.00% | Reduce -5.2% | 875 | $12K |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 0.00% | Reduce -20.6% | 865 | $12K |
| Atlantic Union Bankshares Corp | 0.00% | No change | 824 | $11K |
| GAMMA Investing LLC | 0.00% | Reduce -53.1% | 796 | $11K |
| EverSource Wealth Advisors, LLC | 0.00% | Add +51.4% | 598 | $8K |
| Pin Oak Investment Advisors Inc. | 0.01% | No change | 590 | $8K |
| IFP Advisors, Inc | 0.00% | Add +410.6% | 434 | $6K |
| Parallel Advisors, LLC | 0.00% | Reduce -74.4% | 366 | $5K |
| UMB Bank, n.a. | 0.00% | Add +117.5% | 335 | $5K |
| Essential Partners LLC | 0.00% | Reduce -65.2% | 309 | $4K |
| Federated Hermes, Inc. | 0.00% | Add +12.4% | 244 | $3K |
| Los Angeles Capital Management LLC | 0.00% | No change | 234 | $3K |
| Smartleaf Asset Management LLC | 0.00% | No change | 234 | $3K |
| National Bank of Canada | 0.00% | Add +124.7% | 209 | $3K |
| Jones Financial Companies LLLP | 0.00% | Reduce -81.4% | 197 | $3K |
| Sterling Capital Management LLC | 0.00% | Reduce -45.3% | 173 | $2K |
| Rothschild Investment LLC | 0.00% | Add +67.0% | 172 | $2K |
| AdvisorNet Financial, Inc | 0.00% | No change | 150 | $2K |
| Northwestern Mutual Wealth Management Co. | 0.00% | No change | 146 | $2K |
| SJS Investment Consulting Inc. | 0.00% | New | 138 | $2K |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.00% | No change | 133 | $2K |
| MassMutual Private Wealth & Trust, FSB | 0.00% | New | 111 | $2K |
| True Wealth Design, LLC | 0.00% | New | 91 | $1K |
| Salomon & Ludwin, LLC | 0.00% | Reduce -72.8% | 87 | $1K |
| Larson Financial Group LLC | 0.00% | Add +126.3% | 86 | $1K |
| Wealth Enhancement Trust Services, Inc. | 0.00% | New | 85 | $1K |
| Steward Partners Investment Advisory, LLC | 0.00% | Reduce -91.8% | 80 | $1K |
| Prestige Wealth Management Group LLC | 0.00% | No change | 58 | $806 |
| Quarry LP | 0.00% | New | 38 | $527 |
| Physician Wealth Advisors, Inc. | 0.00% | New | 30 | $417 |
| Millstone Evans Group, LLC | 0.00% | No change | 29 | $403 |
| Clearstead Advisors, LLC | 0.00% | New | 29 | $403 |
| Farmers & Merchants Investments Inc. | 0.00% | No change | 27 | $375 |
| Ameriflex Group, Inc. | 0.00% | New | 20 | $278 |
| Rockefeller Capital Management L.P. | 0.00% | Reduce -97.0% | 14 | $202 |
| Global Retirement Partners, LLC | 0.00% | — | 14 | $194 |
| Plante Moran Financial Advisors, LLC | 0.00% | New | 9 | $125 |
| Transamerica Financial Advisors, LLC | 0.00% | New | 9 | $124 |
| JFS Wealth Advisors, LLC | 0.00% | New | 8 | $112 |
| Ankerstar Wealth, LLC | 0.00% | New | 7 | $97 |
| Ares Financial Consulting, LLC | 0.00% | No change | 7 | $97 |
| First Horizon Corp. | 0.00% | No change | 6 | $83 |
| Signature Resources Capital Management, LLC | 0.00% | No change | 3 | $46 |
| Signaturefd, LLC | 0.00% | Reduce -99.3% | 3 | $42 |
| Davis Capital Management | 0.00% | New | 3 | $42 |
| Abound Wealth Management | 0.00% | No change | 2 | $28 |
| Huntington National Bank | 0.00% | No change | 1 | $14 |
| Buck Wealth Strategies, LLC | 0.00% | New | 1 | $14 |
| Keating Financial Advisory Services, Inc. | 0.00% | New | 1 | $14 |
| Evolution Advisers, Inc. | 0.00% | New | 8 | $0 |
| Covestor Ltd | 0.00% | Add +240.0% | 17 | $0 |
"% of holder's portfolio" is CCOI's weight in each manager's 13F, not the share of Cogent Communications Holdin the manager owns.