Who owns Cogent Communications Holdings, Inc.?
Institutional ownership of CCOI from SEC Form 13F filings across 153 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
153
13F holders
$367.7M
value, 2026 filers
54.4%
of shares outstanding (27.3M sh)
30
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30· % of fund = share of the manager's own book · % of co. = share of CCOI's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 7.4M | $102.4M | 0.0% | 14.7% | +4.3% |
| 2 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2.4M | $33.1M | 0.0% | 4.8% | -13.2% |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 2.0M | $28.3M | 0.0% | 4.1% | -52.0% |
| 4 | GEODE CAPITAL MANAGEMENT, LLC | 1.2M | $17.3M | 0.0% | 2.5% | +3.3% |
| 5 | CITADEL ADVISORS LLC | 1.2M | $16.3M | 0.0% | 2.3% | +175.1% |
| 6 | GOLDMAN SACHS GROUP INC | 973,138 | $13.5M | 0.0% | 1.9% | +36.5% |
| 7 | Sixth Street Partners Management Company, L.P.NEW | 805,244 | $11.2M | 1.9% | 1.6% | new |
| 8 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 805,244 | $11.2M | 0.0% | 1.6% | +5.9% |
| 9 | GILDER GAGNON HOWE & CO LLC | 783,783 | $10.9M | 0.1% | 1.6% | +57.0% |
| 10 | MORGAN STANLEY | 627,593 | $8.7M | 0.0% | 1.3% | -66.7% |
| 11 | HRT FINANCIAL LP | 557,674 | $7,740 | 0.0% | 1.1% | +9.5% |
| 12 | NORTHERN TRUST CORP | 516,683 | $7.2M | 0.0% | 1% | +3.9% |
| 13 | UBS Group AG | 512,618 | $7.1M | 0.0% | 1% | +20.3% |
| 14 | CenterBook Partners LP | 503,457 | $7.0M | 0.3% | 1% | +1.9% |
| 15 | VANGUARD FIDUCIARY TRUST CO | 344,108 | $4.8M | 0.0% | 0.7% | +2.9% |
| 16 | Public Sector Pension Investment Board | 328,218 | $4.6M | 0.0% | 0.7% | +93.3% |
| 17 | BNP PARIBAS FINANCIAL MARKETS | 328,127 | $4.6M | 0.0% | 0.7% | +321.7% |
| 18 | D. E. Shaw & Co., Inc. | 284,694 | $4.0M | 0.0% | 0.6% | -61.5% |
| 19 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 280,790 | $3.9M | 0.0% | 0.6% | +115.8% |
| 20 | Invesco Ltd. | 268,923 | $3.7M | 0.0% | 0.5% | +10.9% |
| 21 | JPMORGAN CHASE & CO | 267,486 | $3.5M | 0.0% | 0.5% | -45.7% |
| 22 | Bank of New York Mellon Corp | 265,490 | $3.7M | 0.0% | 0.5% | +0.3% |
| 23 | BANK OF AMERICA CORP /DE/ | 254,861 | $3.5M | 0.0% | 0.5% | -15.7% |
| 24 | Jump Financial, LLCNEW | 251,745 | $3.5M | 0.0% | 0.5% | new |
| 25 | MYDA Advisors LLCNEW | 240,000 | $3.3M | 0.5% | 0.5% | new |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.