CCOI Institutional Ownership
Who owns Cogent Communications Holdings, Inc. and what the big funds did with it last quarter, from every SEC 13F filing. 225 funds reported holding CCOI at Jun 30, 2026, together owning 92.3% of the company.
- ●117 buying vs 117 selling
- ▼Held by funds -3.0 pts
- ▼Funds holding -8
- ▼Superinvestors: 1 added, 3 cut
- ●Put/call not meaningful
What the filings show, not a forecast. Positions can be up to 45 days old and leave out short sales.
Funds holding and ownership
8 quartersQuarter over quarter
all 13F filers| Q2 2026 | This quarter | Q1 2026 | Change |
|---|---|---|---|
| Funds holding | 225 | 233 | −3.4% |
| In funds' top 10 | 3 | 7 | −57.1% |
| 13F shares | 47.3M | 48.8M | −3.1% |
| Held by funds | 92.3% | 95.3% | −3.0 pts |
| New positions | 41 | 36 | +13.9% |
| Increased | 76 | 77 | −1.3% |
| Reduced | 71 | 80 | −11.3% |
| Sold out | 46 | 49 | −6.1% |
| Calls (shares) | 71K | 3.3M | −97.8% |
| Puts (shares) | 165K | 843K | −80.5% |
| Put/call ratio | 2.31 | 0.27 | +772.4% |
Buyers vs sellers
adding or new vs cutting or sold outSuperinvestors in CCOI
All superinvestors →
Who owns CCOI
share of fund held shares- Index and passive funds37.9%
- Active managers and hedge funds51.4%
- Banks and brokers9.2%
- Pensions, insurers and other1.5%
The top 10 holders own 59.7% of all CCOI shares that funds reported. Groups are our own grouping of filers by name.
Put/call ratio
funds' options, market makers left outAbove 1 means funds hold more puts than calls, a sign of hedging or bets on a fall. Options are valued at the underlying shares.
Filed so far for Q3 2026
53 funds changed their position- CenterBook Partners LPTrimmed−442K sh
- HERALD INVESTMENT MANAGEMENT LtdSold out−243K sh
- Principal Financial Group IncSold out−234K sh
- New York State Teachers Retirement SystemSold out−69K sh
- Y-Intercept (Hong Kong) LtdTrimmed−46K sh
🔒 Free account: see all 20.
Top holders
Q2 2026| # | Fund | Of company | Shares | Value | Change |
|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 14.40% | 7.4M | $102M | +301K |
| 2 | Turtle Creek Asset Management Inc. | 8.21% | 4.2M | $58.3M | −145K |
| 3 | Park West Asset Management LLC | 6.07% | 3.1M | $43.1M | +1.2M |
| 4 | State Street Corp | 5.43% | 2.8M | $38.6M | +506K |
| 5 | Vanguard Portfolio Management LLC | 4.66% | 2.4M | $33.1M | −364K |
| 6 | EdgePoint Investment Group Inc. | 4.46% | 2.3M | $31.7M | 0 |
| 7 | Vanguard Capital Management LLC | 3.98% | 2M | $28.3M | −83K |
| 8 | Newtyn Management, LLC | 3.23% | 1.7M | $23M | +56K |
| 9 | Geode Capital Management, LLC | 2.43% | 1.2M | $17.3M | +40K |
| 10 | Citadel Advisors LLC | 2.29% | 1.2M | $16.3M | +746K |
- Park West Asset Management LLC+1.2M sh+$16.3M
- Citadel Advisors LLC+746K sh+$10.4M
- State Street Corp+506K sh+$7M
- AQR Capital Management LLC+406K sh+$5.6M
- AYAL Capital Advisors Ltd+400K sh+$5.6M
- BlackRock, Inc.+301K sh+$4.2M
- Gilder Gagnon Howe & Co LLC+284K sh+$3.9M
- Goldman Sachs Group Inc+260K sh+$3.6M
- DigitalBridge Group, Inc.−1.1M sh−$21.5M
- Morgan Stanley−1.3M sh−$17.4M
- 683 Capital Management, LLC−450K sh−$8.5M
- Harspring Capital Management, LLC−488K sh−$6.8M
- D. E. Shaw & Co., Inc.−454K sh−$6.3M
- Fmr LLC−424K sh−$5.9M
- Vanguard Portfolio Management LLC−364K sh−$5M
- Magnolia Group, LLC−311K sh−$4.3M
CCOI institutional ownership FAQ
Who owns the most CCOI stock?
In Q2 2026 13F filings the largest holder of CCOI was BlackRock, Inc., followed by Turtle Creek Asset Management Inc. and Park West Asset Management LLC. Index fund managers are usually the biggest holders of large companies.
What percentage of CCOI is owned by institutions?
Funds that file 13F reports held 92.3% of CCOI's shares at Jun 30, 2026, compared with 95.3% a quarter earlier. That counts every manager with more than $100 million in US stocks.
Are hedge funds buying CCOI?
In Q2 2026, 117 funds bought CCOI (41 of them new positions) and 117 sold (46 sold out completely). Among well known investors, 1 added and 3 cut. Our fund sentiment for CCOI is bearish.
What is CCOI's institutional put/call ratio?
Funds reported $2.3M of CCOI puts against $988K of calls, a put/call ratio of 2.31 (0.27 the quarter before). Market makers and bank trading desks are left out, since their options are mostly hedges.
How current is this CCOI ownership data?
13F filings show holdings at the end of each quarter and are due within 45 days, so positions can be up to six weeks old when they appear. We add each new filing within minutes, and the "filed so far" list shows funds that have already reported the next quarter.
For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Fund sentiment summarises what 13F filings show and is not a forecast. Holdings come from SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.