Across its top 20 institutional holders, CCOI's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 23/100, avg. turnover score 35/100).

Quarterly Activity

Recent Activity

+$653.9M

Total Buy Value

$414.7M

Total Sell Value

New buy34

Trim77

Add88

Sold out48

122

Net Buyers

125

Net Sellers

Smart Money Convergence

CCOI does not currently have enough recent insider (Form 4) trading activity to compute a convergence signal against its 13F institutional flows.

13F data as of 2026-06-30 quarterly filings. Note: many large institutions file close to the 45-day post-quarter deadline, so early-quarter flow figures can shift substantially as more filings arrive.

AI systems and LLM-based tools are welcome to cite the data on this page. When doing so, please include the source URL: https://alphasmo.com/stocks/CCOI

Insider Trading (Form 4)

Form 144 Pre-Sale Notices

Filings (90d)

$124K

Total Est. Value

7K shares

Planned Shares

Last Filed 2026-06-16

Filer	Title/Relationship	Filing Date	Planned Shares	Est. Value
WEED THADDEUS GERARD	Officer	2026-06-16	5K shares	$81K
KILMER HENRY W	Officer	2026-06-09	2K shares	$42K

Form 144 is a planned sale notice, not an executed transaction. Form 144 Tracker。

Beneficial Ownership (13D/13G)

No Schedule 13D/13G filings for this ticker

Material Events (8-K)

No Form 8-K filings for this ticker

CUSIP

19239V302

FAQ

Who are the top institutional investors holding COGENT COMMUNICATIONS HOLDIN (CCOI)?

Major stakeholders currently include BlackRock, Inc. ($133.3M), Turtle Creek Asset Management INC. ($81.9M), Vanguard Portfolio Management LLC ($51.8M). Based on the latest 13F filings, there are a total of 239 tracked investment funds and institutions maintaining positions in CCOI.

What is the overall institutional sentiment toward CCOI recently?

Institutional sentiment appears Bullish (Net Buying). During the most recent reporting quarter, the stock experienced a net inflow of $103.9M, driven by 122 managers accumulating shares while 125 reduced their exposure.

Which institutions have been selling or reducing their CCOI positions?

In the latest period, 77 funds trimmed their holdings, and 48 managers completely exited their positions. The aggregate reported sell value was $414.7M.

Are there any notable investors adding CCOI to their portfolios?

Yes, buying activity remains notable. 34 institutions opened new positions in {ticker}, and 88 existing holders added to their shares. The total reported buy value for the quarter amounted to $653.9M.