CCOI · Insider trading · 13F holders · Congress trades
Cogent Communications Holdings, Inc. (CCOI)
Who is buying and selling CCOI: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 15
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $68K
- Congress trades, 12 months
- 1
CCOI at a glance
- Between Aug 1, 2026 and Oct 29, 2026, 2 CCOI insiders filed 2 sales worth $68K on SEC Form 4, and no open-market purchases.
- 15 13F filers hold CCOI among their 50 largest positions, worth $222.1M combined. The biggest bets by portfolio weight are Oakum Bay Capital LLC (7.0%), FourWorld Capital Management LLC (4.3%) and Park West Asset Management LLC (2.9%). In their latest 13Fs, 1 manager opened a new position and 2 added to one.
- Members of Congress have disclosed 1 CCOI trade since 2019, 0 purchases and 1 sale in the past year; the latest was Donna E. Shalala (D-FL), selling $1K–15K on Jun 24, 2019.
- CCOI last closed at $7.76 on Oct 29, 2026.
CCOI insider trading
Between Aug 1, 2026 and Oct 29, 2026, 2 CCOI insiders filed 2 sales worth $68K on SEC Form 4, and no open-market purchases.
| Filed | Insider | Role | Trade | Shares | Price | Value | Form 4 |
|---|---|---|---|---|---|---|---|
| Sep 15, 2026 | Kilmer Henry W | VP OF NETWORK STRATEGY | Sale | 2,400 | $9.21 | $22K | SEC |
| Sep 3, 2026 | Weed Thaddeus Gerard | VICE PRESIDENT, CFO | Sale | 4,850 | $9.37 | $45K | SEC |
Who owns CCOI? Hedge funds and superinvestors
15 13F filers hold CCOI among their 50 largest positions, worth $222.1M combined. The biggest bets by portfolio weight are Oakum Bay Capital LLC (7.0%), FourWorld Capital Management LLC (4.3%) and Park West Asset Management LLC (2.9%). In their latest 13Fs, 1 manager opened a new position and 2 added to one.
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Turtle Creek Asset Management Inc.Hedge fund | 2.3% | $58.3M | 4,203,527 | -3.3% shares | Q2 2026 |
| Park West Asset Management LLCHedge fund | 2.9% | $43.1M | 3,106,339 | +60.5% shares | Q2 2026 |
| EdgePoint Investment Group Inc.Hedge fund | 0.2% | $31.7M | 2,283,378 | +0.0% shares | Q2 2026 |
| Newtyn Management, LLCHedge fund | 2.9% | $23.0M | 1,655,895 | +3.5% shares | Q2 2026 |
| Magnolia Group, LLCHedge fund | 2.9% | $13.6M | 979,686 | -24.1% shares | Q2 2026 |
| Oakum Bay Capital LLCAsset manager | 7.0% | $13.0M | 690,374 | +27.0% shares | Q1 2026 |
| Broad Run Investment Management, LLCMutual fund manager | 1.4% | $9.2M | 660,130 | -0.5% shares | Q2 2026 |
| Harspring Capital Management, LLCHedge fund | 15.5% | $8.3M | 599,418 | -44.9% shares | Q2 2026 |
| AYAL Capital Advisors LtdHedge fund | 2.8% | $5.6M | 400,000 | New | Q2 2026 |
| FourWorld Capital Management LLCHedge fund | 4.3% | $3.7M | 265,500 | +0.0% shares | Q2 2026 |
| BlackBarn Capital Partners LPHedge fund | 0.9% | $3.5M | 250,000 | -50.0% shares | Q2 2026 |
| MYDA Advisors LLCHedge fund | 0.8% | $3.3M | 240,000 | — | Q2 2026 |
| Palliser Capital (UK) LtdHedge fund | 1.8% | $3.3M | 236,393 | -29.3% shares | Q2 2026 |
| Global Endowment Management, LPEndowment & foundation | 0.2% | $2.2M | 158,582 | — | Q2 2026 |
| Prairieview Wealth Partners, LLCWealth manager | 0.3% | $357K | 25,742 | -13.4% shares | Q2 2026 |
Each manager counts with its latest 13F (Q2 2026: 14, Q1 2026: 1). Screen CCOI in the grand portfolio →
CCOI stock trades by members of Congress
Members of Congress have disclosed 1 CCOI trade since 2019, 0 purchases and 1 sale in the past year; the latest was Donna E. Shalala (D-FL), selling $1K–15K on Jun 24, 2019.
| Filed | Member | Trade | Amount | Traded | Since |
|---|---|---|---|---|---|
| Apr 27, 2020 | Donna E. ShalalaD-FL · House | Sale | $1K–15K | Jun 24, 2019 | -87.2% |
CCOI questions and answers
Are insiders buying CCOI stock?
Between Aug 1, 2026 and Oct 29, 2026, 2 CCOI insiders filed 2 sales worth $68K on SEC Form 4, and no open-market purchases.
Which hedge funds own CCOI?
15 13F filers hold CCOI among their 50 largest positions, worth $222.1M combined. The biggest bets by portfolio weight are Oakum Bay Capital LLC (7.0%), FourWorld Capital Management LLC (4.3%) and Park West Asset Management LLC (2.9%). In their latest 13Fs, 1 manager opened a new position and 2 added to one.
Has Congress traded CCOI?
Members of Congress have disclosed 1 CCOI trade since 2019, 0 purchases and 1 sale in the past year; the latest was Donna E. Shalala (D-FL), selling $1K–15K on Jun 24, 2019.
Who is the largest holder of CCOI?
Among 13F filers, Turtle Creek Asset Management Inc. reports the largest CCOI position, $58.3M (4,203,527 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Oakum Bay Capital LLC's: 7.0% of its portfolio.
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