Cogent Communications HoldinCCOI
13F holders, Q1 2026 (March 31)233holders −13
36new positions
49sold out
7famous investors
$18.83avg. 13F price*
At the end of Q1 2026, 233 institutions reported holding Cogent Communications Holdin (CCOI) in their 13F filings, down 13 from Q4 2025. 36 opened new positions and 49 sold out. The largest holders were BlackRock, Inc. ($133.3M), Turtle Creek Asset Management Inc. ($81.9M) and Vanguard Portfolio Management LLC ($51.8M). 7 famous investors held it, including Paul Tudor Jones (0.0% of Tudor Investment Corporation's portfolio), David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Cogent Communications Holdin
- CUSIP
- 19239V302
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 36 | $23.8M |
| Exits | 49 | $49.4M |
All 13F filers, Q4 2025 → Q1 2026: 7,100,312 shares bought and 6,040,923 shares sold, net +1,059,389 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 233 holders
| BlackRock, Inc. | 0.00% | Reduce -1.6% | 7,075,372 | $133.3M |
| Turtle Creek Asset Management Inc. | 3.07% | Add +7.7% | 4,348,897 | $81.9M |
| Vanguard Portfolio Management LLC | 0.00% | — | 2,748,759 | $51.8M |
| EdgePoint Investment Group Inc. | 0.34% | No change | 2,283,378 | $43.0M |
| State Street Corp. | 0.00% | Add +9.8% | 2,273,265 | $42.8M |
| Vanguard Capital Management LLC | 0.00% | — | 2,120,531 | $40.0M |
| Park West Asset Management LLC | 3.22% | Add +37.3% | 1,935,201 | $36.5M |
| Morgan Stanley | 0.00% | Add +50.4% | 1,883,072 | $35.5M |
| Newtyn Management, LLC | 3.22% | Add +14.3% | 1,600,000 | $30.1M |
| Magnolia Group, LLC | 4.52% | Add +3.5% | 1,290,204 | $24.3M |
| Geode Capital Management, LLC | 0.00% | Add +2.2% | 1,205,635 | $22.7M |
| DigitalBridge Group, Inc. | 1.37% | Add +79.7% | 1,142,952 | $21.5M |
| Harspring Capital Management, LLC | 10.77% | Reduce -22.5% | 1,087,000 | $20.5M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +14.0% | 760,117 | $14.3M |
| D. E. Shaw & Co. | 0.01% | Add +163.7% | 738,815 | $13.9M |
| Goldman Sachs Group Inc. | 0.00% | Add +16.0% | 712,934 | $13.4M |
| Oakum Bay Capital LLC | 6.98% | Add +27.0% | 690,374 | $13.0M |
| Broad Run Investment Management, LLC | 2.20% | Reduce -0.1% | 663,200 | $12.5M |
| FMR LLC | 0.00% | Reduce -27.8% | 588,788 | $11.1M |
| HRT Financial LP | 0.02% | Add +935.4% | 509,095 | $9.6M |
| BlackBarn Capital Partners LP | 2.83% | Reduce -23.1% | 500,000 | $9.4M |
| Gilder Gagnon Howe & Co. LLC | 0.11% | Add +1.1% | 499,290 | $9.4M |
| Northern Trust Corp. | 0.00% | Reduce -0.4% | 497,195 | $9.4M |
| CenterBook Partners LP | 0.50% | Reduce -17.9% | 494,283 | $9.3M |
| JPMorgan Chase & Co. | 0.00% | Add +192.1% | 492,468 | $8.6M |
| 683 Capital Management, LLC | 0.83% | Reduce -24.9% | 450,300 | $8.5M |
| Citadel Advisors | 0.01% | Add +155.1% | 426,280 | $8.0M |
| UBS Group AG | 0.00% | Add +71.4% | 425,968 | $8.0M |
| Frontier Capital Management Co. LLC | 0.08% | Add +15.4% | 399,208 | $7.5M |
| Boothbay Fund Management, LLC | 0.17% | Add +72.2% | 378,929 | $7.1M |
| Palliser Capital (UK) Ltd | 4.89% | Reduce -21.5% | 334,444 | $6.3M |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 334,428 | $6.3M |
| Granahan Investment Management, LLC | 0.29% | Add +46.3% | 317,447 | $6.0M |
| Bank of America Corp. | 0.00% | Reduce -74.8% | 302,393 | $5.7M |
| PDT Partners, LLC | 0.32% | New | 283,629 | $5.3M |
| Jane Street Group, LLC | 0.01% | Add +17.2% | 277,486 | $5.2M |
| FourWorld Capital Management LLC | 2.82% | New | 265,500 | $5.0M |
| Bank of New York Mellon Corp | 0.00% | Reduce -4.5% | 264,569 | $5.0M |
| HERALD INVESTMENT MANAGEMENT Ltd | 0.64% | No change | 242,600 | $4.6M |
| Invesco Ltd. | 0.00% | Reduce -7.5% | 242,426 | $4.6M |
| Walleye Capital LLC | 0.03% | Add +136.2% | 239,557 | $4.5M |
| Principal Financial Group Inc. | 0.00% | Add +2.3% | 232,206 | $4.4M |
| Millennium Management | 0.00% | Add +488.9% | 228,396 | $4.3M |
| AQR Capital Management | 0.00% | Add +606.0% | 209,909 | $4.0M |
| Public Sector Pension Investment Board | 0.01% | Add +3.1% | 169,759 | $3.2M |
| Nuveen, LLC | 0.00% | Reduce -0.7% | 168,500 | $3.2M |
| Blair William & Co. | 0.01% | Reduce -6.3% | 166,521 | $3.1M |
| Advisors Asset Management, Inc. | 0.05% | Reduce -17.6% | 149,698 | $2.8M |
| Tudor Investment Corporation | 0.01% | New | 139,692 | $2.6M |
| Rhumbline Advisers | 0.00% | Add +0.3% | 137,920 | $2.6M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Reduce -8.7% | 136,701 | $2.6M |
| Bluefin Capital Management, LLC | 2.92% | Reduce -16.3% | 132,304 | $2.5M |
| Susquehanna International Group, LLP | 0.00% | Reduce -2.5% | 130,113 | $2.5M |
| Quantinno Capital Management LP | 0.00% | Add +77.9% | 108,875 | $2.1M |
| Legal & General Group Plc | 0.00% | Reduce -46.4% | 106,632 | $2.0M |
| Wells Fargo & Company | 0.00% | Add +25.4% | 98,681 | $1.9M |
| Swiss National Bank | 0.00% | No change | 97,000 | $1.8M |
| Simplex Trading, LLC | 0.05% | Add +8.2% | 91,893 | $1.7M |
| LPL Financial LLC | 0.00% | Add +372.0% | 90,583 | $1.7M |
| Man Group plc | 0.00% | Reduce -72.3% | 90,227 | $1.7M |
| Brooklyn Investment Group | 0.05% | Add +288.2% | 81,791 | $1.5M |
| Ameriprise Financial Inc. | 0.00% | Reduce -4.2% | 80,705 | $1.5M |
| BNP Paribas Financial Markets | 0.00% | Add +10.6% | 77,806 | $1.5M |
| State of Wisconsin Investment Board | 0.00% | Reduce -0.9% | 74,454 | $1.4M |
| WINTON GROUP Ltd | 0.05% | Add +96.9% | 70,093 | $1.3M |
| New York State Teachers Retirement System | 0.00% | Reduce -6.1% | 69,237 | $1.3M |
| Skylands Capital, LLC | 0.17% | Add +11.5% | 68,650 | $1.3M |
| Renaissance Technologies | 0.00% | Reduce -24.6% | 67,131 | $1.3M |
| T. Rowe Price Associates Inc. | 0.00% | Add +20.5% | 61,810 | $1.2M |
| Aristeia Capital, L.L.C. | 0.04% | New | 58,993 | $1.1M |
| Alliancebernstein L.P. | 0.00% | Reduce -12.4% | 50,321 | $1.1M |
| Brown Advisory Inc. | 0.00% | Add +6.6% | 56,429 | $1.1M |
| Caption Management, LLC | 0.05% | Add +22.2% | 55,000 | $1.0M |
| ExodusPoint Capital Management, LP | 0.01% | New | 53,606 | $1.0M |
| Caxton Associates LLP | 0.02% | New | 52,879 | $996K |
| Squarepoint Ops LLC | 0.00% | New | 51,248 | $966K |
| Prudential Financial Inc. | 0.00% | Add +10.2% | 49,545 | $933K |
| Deutsche Bank AG | 0.00% | Reduce -24.8% | 49,420 | $931K |
| SG Americas Securities, LLC | 0.00% | Reduce -29.9% | 47,717 | $899K |
| Corient Private Wealth LP | 0.00% | New | 47,645 | $898K |
| IMC-Chicago, LLC | 0.01% | Add +342.1% | 46,171 | $870K |
| California State Teachers Retirement System | 0.00% | Reduce -0.8% | 45,714 | $861K |
| Russell Investments Group, Ltd. | 0.00% | Add +557.2% | 43,149 | $813K |
| Citigroup Inc. | 0.00% | Reduce -73.6% | 42,186 | $795K |
| Navis Wealth Advisors, LLC | 0.38% | Add +229.2% | 39,500 | $744K |
| CANADA LIFE ASSURANCE Co | 0.00% | No change | 39,225 | $739K |
| Salvus Wealth Management, LLC | 0.42% | Add +106.5% | 37,932 | $715K |
| Landscape Capital Management, L.L.C. | 0.04% | Add +48.1% | 36,432 | $686K |
| PNC Financial Services Group, Inc. | 0.00% | Add +44.1% | 32,289 | $608K |
| Thrivent Financial for Lutherans | 0.00% | Reduce -2.9% | 31,681 | $597K |
| VANGUARD ASSET MANAGEMENT, Ltd | 0.00% | — | 30,615 | $577K |
| Altfest L J & Co. Inc. | 0.06% | Add +30.2% | 30,291 | $571K |
| Prairieview Wealth Partners, LLC | 0.46% | Reduce -14.4% | 29,742 | $560K |
| XTX Topco Ltd | 0.01% | New | 29,324 | $552K |
| Engineers Gate Manager LP | 0.01% | New | 29,310 | $552K |
| Reaves W H & Co. Inc. | 0.01% | Reduce -89.2% | 28,098 | $529K |
| MetLife Investment Management, LLC | 0.00% | Add +4.9% | 27,376 | $516K |
| Oppenheimer & Co. Inc. | 0.01% | Add +72.3% | 26,649 | $502K |
| Quadrature Capital Ltd | 0.01% | New | 25,685 | $484K |
| State of Alaska, Department of Revenue | 0.01% | Reduce -2.7% | 24,824 | $467K |
"% of holder's portfolio" is CCOI's weight in each manager's 13F, not the share of Cogent Communications Holdin the manager owns.