CCOI
Cogent Communications Holdings, Inc. · Communication Services · Telecommunications Services
Momentum inputs (comparable managers):
holder breadth -8.3% ·
share flow +0.2% ·
net new positions -9.1%
· formula
Concentrated accumulation: rising shares among fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q3 2026 | 1 | 0 | 25.17K | $240,606 | n/a | n/a |
| Q2 2026 | 74 | +1 | 24.15M | $335.24M | +6 | −5 |
| Q1 2026 | 76 | -2 | 24.18M | $454.93M | +6 | −8 |
| Q4 2025 | 78 | -1 | 27.66M | $596.35M | +1 | −2 |
| Q3 2025 | 16 | +2 | 20.31M | $778.74M | +2 | n/a |
| Q2 2025 | 11 | -1 | 17.04M | $821.72M | n/a | −1 |
| Q1 2025 | 9 | 0 | 4.54M | $278.65M | +2 | −2 |
| Q4 2024 | 9 | -1 | 5.00M | $385.13M | n/a | −1 |
| Q3 2024 | 9 | +2 | 3.34M | $253.67M | +2 | n/a |
| Q2 2024 | 7 | n/a | 3.37M | $190.05M | n/a | n/a |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 6.48M | n/a | $312.43M | 0.0% | n/c | 1 | SEC ↗ ×15 |
| 2 | The Vanguard Group ✦ (passive) | 5.09M | n/a | $245.48M | 0.0% | n/c | 1 | SEC ↗ ×5 |
| 3 | State Street Global Advisors ✦ (passive) | 1.79M | +0.8% | $86.21M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 4 | Geode Capital Management ✦ (passive) | 1.06M | +1.9% | $51.13M | 0.0% | ▲ Add | 5 | SEC ↗ ×2 |
| 5 | Capital World Investors ✦ | 955.29K | 0.0% | $46.05M | 0.0% | Held | 5 | SEC ↗ |
| 6 | Fidelity (FMR) ✦ | 894.85K | n/a | $43.14M | 0.0% | n/c | 1 | SEC ↗ ×4 |
| 7 | Renaissance Technologies ✦ | 458.06K | -28.9% | $22.08M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 8 | Citadel Advisors ✦ | 250.84K | +389.6% | $12.09M | 0.0% | ▲ Add | 5 | SEC ↗ ×2 |
| 9 | T. Rowe Price ✦ | 38.31K | +9.1% | $1.85M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 10 | Millennium Management ✦ | 21.04K | -41.1% | $1.01M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 11 | AQR Capital Management ✦ | 5.05K | +53.1% | $243,340 | 0.0% | ▲ Add | 2 | SEC ↗ ×4 |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| No new tracked buyers this quarter. |
Exited
| Marshall Wace | $286,440 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 232 holders, 52.23M shares, $967.26M reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
What else this security's tracked holders most often hold: shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Officer · 2.40K sh · $22,104
Officer · 4.85K sh · $45,445
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology