Free Trial
Memorial Day Savings! Save $100 on MarketBeat All Access
Claim Your Discount
Claim MarketBeat All Access Sale Promotion

Cogent Communications (CCOI) Short Interest Ratio & Short Volume

Cogent Communications logo
$18.15 +0.38 (+2.12%)
As of 12:12 PM Eastern
This is a fair market value price provided by Massive. Learn more.
Compare

Cogent Communications Short Interest Overview

As of April 30, 2026, Cogent Communications (CCOI) had a short interest of 5.30 million shares sold short, representing 11.04% of the public float. This marks a -7.88% decrease in short interest since the prior report. The short interest ratio (days to cover) is 6.4, meaning it would take 6.4 days of the average trading volume of 1.20 million shares to cover all short positions.

Current Short Interest
5,297,480 shares
Previous Short Interest
5,750,362 shares
Change Vs. Previous Month
-7.88%
Dollar Volume Sold Short
$119.99 million
Short Interest Ratio
6.4 Days to Cover
Last Record Date
April 30, 2026
Outstanding Shares
50,080,000 shares
Short Percent of Float
11.04%
Today's Trading Volume
231,170 shares
Average Trading Volume
1,196,615 shares
Today's Volume Vs. Average
19%
Short Selling Cogent Communications?
A Guide To High-Short-Interest Stocks

Sign up to receive the latest short interest report for Cogent Communications and its competitors with MarketBeat's FREE newsletter.

Get Report
SMS is currently available in Australia, Belgium, Canada, France, Germany, Ireland, Italy, New Zealand, the Netherlands, Singapore, South Africa, Spain, Switzerland, the United Kingdom, and the United States. By entering your phone number and clicking the sign-up button, you agree to receive periodic text messages from MarketBeat at the phone number you submitted, including texts that may be sent using an automatic telephone dialing system. Message and data rates may apply. Message frequency will vary. Messages will consist of stock alerts, news stories, and partner advertisements/offers. Consent is not a condition of the purchase of any goods or services. Text HELP for help/customer support. Unsubscribe at any time by replying "STOP" to any text message that you receive from MarketBeat or by visiting our mailing preferences page. Read our full terms of service and privacy policy.
Skip Charts & View Short Interest History
Short Interest ChartDays to Cover ChartShort Percent of Float Chart

CCOI Short Interest Over Time

CCOI Days to Cover Over Time

CCOI Percentage of Float Shorted Over Time

Cogent Communications Tesla Short Interest History & Recent Changes

Export
Report DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date
4/30/20265,297,480 shares $119.99 million -7.9%11.0%6.37 $22.65
4/15/20265,750,362 shares $135.31 million -1.6%12.0%6.67 $23.53
3/31/20265,842,448 shares $110.07 million -12.5%12.2%4.78 $18.84
3/13/20266,673,628 shares $125.46 million -10.1%14.8%5.7 $18.80
2/27/20267,419,016 shares $139.18 million +22.1%16.5%3.67 $18.76
2/13/20266,074,190 shares $160.72 million +10.2%13.8%6.24 $26.46
1/30/20265,511,079 shares $133.92 million -7.4%12.5%8.27 $24.30
1/15/20265,951,263 shares $138.13 million -8.3%13.5%6.59 $23.21
12/31/20256,486,402 shares $139.85 million +11.5%14.7%4.45 $21.56
12/15/20255,818,148 shares $132.89 million -9.2%13.2%4.31 $22.84
11/28/20256,404,577 shares $122.36 million -4.1%14.5%3.23 $19.11
11/14/20256,676,850 shares $117.18 million -6.5%15.3%2.43 $17.55
10/31/20257,140,690 shares $294.55 million +12.3%16.4%7.19 $41.25
10/15/20256,360,000 shares $286.84 million +4.3%13.6%4.2 $45.10
9/30/20256,100,000 shares $233.94 million +0.7%13.0%4.2 $38.35
9/15/20256,060,000 shares $226.28 million +11.2%12.9%4.5 $37.34
8/31/20255,450,000 shares $208.35 million -1.6%11.6%4.6 $38.23
8/15/20255,540,000 shares $189.75 million +12.8%11.8%5 $34.25
7/31/20254,910,000 shares $223.85 million -1.6%11.1%5.1 $45.59
7/15/20254,990,000 shares $250.75 million -3.7%11.2%6.8 $50.25
6/30/20255,180,000 shares $249.73 million +1.4%11.7%6.7 $48.21
6/15/20255,110,000 shares $240.07 million -1.9%11.5%6.5 $46.98
5/31/20255,210,000 shares $237.73 million +24.9%11.9%7.3 $45.63
5/15/20254,170,000 shares $210.21 million -6.1%9.6%6.2 $50.41
4/30/20254,440,000 shares $241.31 million -1.3%10.2%8 $54.35
4/15/20254,500,000 shares $240.48 million +19.7%10.4%9.3 $53.44
3/31/20253,760,000 shares $230.53 million -1.1%8.7%8.3 $61.31
3/15/20253,800,000 shares $260.38 million +3.5%8.8%9.7 $68.52
2/28/20253,670,000 shares $268.17 million -1.9%8.5%9.4 $73.07
2/15/20253,740,000 shares $306.68 million +8.4%8.7%9.9 $82.00
1/31/20253,450,000 shares $259.92 million -8.2%8.0%8.6 $75.34
1/15/20253,760,000 shares $274.56 million +3.9%8.6%9.3 $73.02
12/31/20243,620,000 shares $278.99 million +15.3%8.2%8.9 $77.07
12/15/20243,140,000 shares $242.69 million -17.4%7.1%7.9 $77.29
11/30/20243,800,000 shares $312.32 million -0.5%8.6%9.7 $82.19
11/15/20243,820,000 shares $303.31 million -6.1%8.7%9.8 $79.40
10/31/20244,070,000 shares $326.70 million -1.9%9.2%10.7 $80.27
10/15/20244,150,000 shares $340.34 million -1.2%9.4%10.6 $82.01
9/30/20244,200,000 shares $318.86 million -6.0%9.5%9.5 $75.92
9/15/20244,470,000 shares $325.86 million +1.8%10.1%9.6 $72.90
I was right about SpaceX (Ad)

Jeff Brown predicted Bitcoin before it climbed as high as 52,400%, Tesla before 2,150%, and Nvidia before 32,000%. Now he says SpaceX is shaping up to be the biggest IPO of the decade - and three key milestones just confirmed it. In the past 21 days: SpaceX crossed 10,000 active satellites, Elon filed confidential IPO paperwork with the SEC, and another rocket launched 25 more satellites. Two-thirds of every satellite in orbit now belongs to one company. The public filing could drop any day.tc pixel

See how to claim your stake in SpaceX before the public can
8/31/20244,390,000 shares $307.21 million -11.9%9.9%8.8 $69.98
8/15/20244,980,000 shares $366.03 million +7.6%11.3%9.6 $73.50
7/31/20244,630,000 shares $326.83 million -2.9%10.5%8.4 $70.59
7/15/20244,770,000 shares $313.87 million +1.3%10.8%9 $65.80
6/30/20244,710,000 shares $265.83 million +7.1%10.7%9.2 $56.44
6/15/20244,400,000 shares $229.59 million +15.5%10.0%9.1 $52.18
5/31/20243,810,000 shares $225.63 million +1.6%8.7%7.7 $59.22
5/15/20243,750,000 shares $220.09 million +13.0%8.6%7.3 $58.69
4/30/20243,320,000 shares $213.08 million +15.3%7.9%7.1 $64.18
4/15/20242,880,000 shares $181.53 million +12.1%6.8%6.5 $63.03
3/31/20242,570,000 shares $167.90 million -17.9%6.1%6.2 $65.33
3/15/20243,130,000 shares $203.23 million +47.0%7.4%8.1 $64.93
2/29/20242,130,000 shares $172.34 million -3.6%5.1%6.1 $80.91
2/15/20242,210,000 shares $170.32 million +0.5%5.1%7.7 $77.07
1/31/20242,200,000 shares $169.84 million +8.9%5.1%7.3 $77.20
1/15/20242,020,000 shares $148.57 million +1.5%4.7%6.7 $73.55
12/31/20231,990,000 shares $151.36 million +4.2%4.6%6.5 $76.06
12/15/20231,910,000 shares $137.02 million +7.9%4.4%5.6 $71.74
11/30/20231,770,000 shares $113.03 million +3.5%4.1%4.9 $63.86
11/15/20231,710,000 shares $113.72 million +11.8%3.9%4.9 $66.50
10/31/20231,530,000 shares $99.42 million +24.4%3.5%3.9 $64.98
10/15/20231,230,000 shares $77.07 million -5.4%2.8%3 $62.66
9/30/20231,300,000 shares $80.47 million -11.0%3.0%3 $61.90
9/15/20231,460,000 shares $95.67 million +6.6%3.4%3.8 $65.53
8/31/20231,370,000 shares $96.69 million -4.9%3.2%3.8 $70.58
8/15/20231,440,000 shares $102.77 million +5.1%3.3%4 $71.37
7/31/20231,370,000 shares $83.90 million -16.0%3.2%4.4 $61.24
7/15/20231,630,000 shares $103.34 million No Change3.8%5.6 $63.40
6/30/20231,630,000 shares $109.68 million -11.9%3.8%6.1 $67.29
6/15/20231,850,000 shares $121.10 million No Change4.3%6.6 $65.46
5/31/20231,850,000 shares $113.81 million +3.4%4.3%6.1 $61.52
5/15/20231,790,000 shares $112.88 million +6.6%4.2%5.7 $63.06
4/30/20231,680,000 shares $115.99 million +1.8%3.9%5.4 $69.04
4/15/20231,650,000 shares $113.88 million -2.9%3.9%5.6 $69.02
3/31/20231,700,000 shares $108.32 million +27.8%4.0%5.6 $63.72
3/15/20231,330,000 shares $81.68 million +0.8%3.1%4.5 $61.41
2/28/20231,320,000 shares $85.46 million +12.8%3.1%4.7 $64.74
2/15/20231,170,000 shares $77.98 million -4.1%2.7%4.3 $66.65
1/31/20231,220,000 shares $83.66 million -4.7%2.9%4.5 $68.57
1/15/20231,280,000 shares $83.44 million -9.2%3.0%4.4 $65.19
12/30/20221,410,000 shares $80.48 million -0.7%3.3%4.8 $57.08
12/15/20221,420,000 shares $78.92 million +15.5%3.3%4.5 $55.58
11/30/20221,230,000 shares $71.40 million -18.5%2.9%3.7 $58.05
11/15/20221,510,000 shares $86.42 million -12.7%3.5%4.5 $57.23
10/31/20221,730,000 shares $90.84 million -9.4%4.1%5.2 $52.51
10/15/20221,910,000 shares $96.17 million +7.9%4.5%6.2 $50.35
9/30/20221,770,000 shares $92.32 million -6.4%4.2%6.1 $52.16
9/15/20221,890,000 shares $101.42 million +5.0%4.4%6.7 $53.66
8/31/20221,800,000 shares $95.85 million -5.8%4.2%6.6 $53.25
8/15/20221,910,000 shares $116.09 million +1.6%4.5%8.1 $60.78
I was right about SpaceX (Ad)

Jeff Brown predicted Bitcoin before it climbed as high as 52,400%, Tesla before 2,150%, and Nvidia before 32,000%. Now he says SpaceX is shaping up to be the biggest IPO of the decade - and three key milestones just confirmed it. In the past 21 days: SpaceX crossed 10,000 active satellites, Elon filed confidential IPO paperwork with the SEC, and another rocket launched 25 more satellites. Two-thirds of every satellite in orbit now belongs to one company. The public filing could drop any day.tc pixel

See how to claim your stake in SpaceX before the public can
7/31/20221,880,000 shares $119.96 million +9.3%4.4%7.2 $63.81
7/15/20221,720,000 shares $104.23 million +42.2%4.0%6.1 $60.60
6/30/20221,210,000 shares $73.52 million -11.7%2.8%4.2 $60.76
6/15/20221,370,000 shares $78.99 million +16.1%3.3%4.6 $57.66
5/31/20221,180,000 shares $71.26 million -18.1%2.8%4.1 $60.39
5/15/20221,440,000 shares $85.20 million +1.4%3.4%4.5 $59.17
4/30/20221,420,000 shares $83.07 million +10.9%3.3%4.6 $58.50
4/15/20221,280,000 shares $84.95 million +9.4%3.0%4.5 $66.37
3/31/20221,170,000 shares $77.63 million -14.6%2.8%4 $66.35
3/15/20221,370,000 shares $86.57 million No Change3.2%4.9 $63.19
2/28/20221,370,000 shares $86.86 million +23.4%3.2%4.2 $63.40
2/15/20221,110,000 shares $72.94 million +39.5%2.6%3.4 $65.71
1/31/2022795,800 shares $50.62 million +4.2%1.9%2.7 $63.61
1/15/2022763,800 shares $48.88 million -1.3%N/A0 $63.99
12/31/2021774,200 shares $56.66 million -22.6%1.8%2.9 $73.18
12/15/20211,000,000 shares $75.97 million -2.9%2.4%3.8 $75.97
11/30/20211,030,000 shares $77.18 million +11.4%2.4%5 $74.93
11/15/2021924,400 shares $72.65 million -11.1%2.2%5.1 $78.59
10/29/20211,040,000 shares $79.65 million -10.3%2.5%5.6 $76.59
10/15/20211,160,000 shares $84.90 million +14.9%2.7%6 $73.19
9/30/20211,010,000 shares $71.55 million No Change2.4%5 $70.84
9/15/20211,010,000 shares $73.85 million No Change2.4%5.1 $73.12
8/31/20211,010,000 shares $73.31 million +9.5%2.4%5.2 $72.58
8/13/2021922,500 shares $67.04 million -9.6%2.2%4.5 $72.67
7/30/20211,020,000 shares $79.16 million -1.0%2.4%4.5 $77.61
7/15/20211,030,000 shares $79.69 million -9.7%2.4%4.3 $77.37
6/30/20211,140,000 shares $87.65 million -3.4%2.7%4.5 $76.89
6/15/20211,180,000 shares $92.04 million -3.3%2.8%4.2 $78.00
5/28/20211,220,000 shares $92.23 million -6.2%2.9%4.1 $75.60

CCOI Short Interest - Frequently Asked Questions

Short interest is the volume of Cogent Communications shares that have been sold short but have not yet been covered or closed out. As of April 30th, traders have sold 5,297,480 shares of CCOI short. 11.04% of Cogent Communications' shares are currently sold short. Learn More on Cogent Communications' current short interest.

The short interest ratio, also known as the "days to cover ratio", is calculated by dividing the number of shares of a stock sold short divided by its average trading volume. A short interest ratio ranging between 1 and 4 generally indicates strong positive sentiment about a stock and a lack of short sellers. A short interest ratio of 10 or greater indicates strong pessimism about a stock. CCOI shares currently have a short interest ratio of 6.4. Learn More on Cogent Communications's short interest ratio.

As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of Cogent Communications: Mariner Investment Group LLC. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission.

Companies that have a short interest as a percentage of float below 10% indicates positive investor sentiment and few short sellers. Stocks with a short interest percentage above 10% is considered high, suggesting some investors are pessimistic about the stock. Companies with a short interest percentage of 20% or more indicates widespread negative sentiment. 11.04% of Cogent Communications' floating shares are currently sold short.

Cogent Communications saw a drop in short interest in April. As of April 30th, there was short interest totaling 5,297,480 shares, a drop of 7.9% from the previous total of 5,750,362 shares. Changes in short volume can be used to identify positive and negative investor sentiment. Investors that short sell a stock are betting that its price will decline in the future. An increase in short sale volume suggests bearish (negative) sentiment among investors. A decrease on short sale volume suggests bullish (positive) sentiment.

11.04% of Cogent Communications' shares are currently sold short. Here is how the short interest of companies compare to Cogent Communications: Iridium Communications Inc (5.27%), Liberty Global PLC (2.87%), Liberty Latin America Ltd. (0.34%), Gogo Inc. (16.60%), Nexxen International Ltd. Sponsored ADR (4.17%), ATN International, Inc. (1.10%), Spok Holdings, Inc. (2.52%), Old Market Capital Corporation (1.73%), Cambium Networks Corporation (14.99%), T-Mobile US, Inc. (1.70%),

As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($86.09 billion), Invesco QQQ ($39.89 billion), iShares Russell 2000 ETF ($26.13 billion), Western Digital Corporation ($12.66 billion), Salesforce Inc. ($12.29 billion), Sandisk Corporation ($11.87 billion), SPDR S&P Biotech ETF ($9.82 billion), Lumentum Holdings Inc. ($8.51 billion), iShares 20+ Year Treasury Bond ETF ($7.76 billion), and Bloom Energy Corporation ($7.40 billion). View all of the most shorted stocks.

Short selling CCOI is an investing strategy that aims to generate trading profit from Cogent Communications as its price is falling. CCOI shares are trading down $0.15 today. To short a stock, an investor borrows shares, sells them and buys the shares back on the public market later to return it to the lender. Short sellers are betting that a stock will decline in price. If the stock does drop after selling, the short seller buys it back at a lower price and returns it to the lender. The difference between the sell price and the buy price is the trader's profit.

A short squeeze for Cogent Communications occurs when it has a large amount of short interest and its stock appreciates in price. This forces short sellers to cover their short interest positions by buying actual shares of CCOI, which in turn drives the price of the stock up even further.

Short interest is typically published by a stock exchange once per month. However, NASDAQ publishes a report for U.S. stocks, including CCOI, twice per month. The most recent reporting period available is April, 30 2026.

Understanding short interest metrics can help you assess how traders are positioning around a stock like CCOI:

  • Shares Sold Short: The total number of shares that have been sold by short sellers but have not yet been covered or closed out. A high number may indicate bearish sentiment.
  • Short Float: The percentage of a company’s publicly available shares (or "float") that are sold short. A higher short float suggests a greater portion of the stock is being bet against.
  • Days to Cover (Short Interest Ratio): This estimates how many days it would take short sellers to cover their positions, based on average daily trading volume. Higher values can signal potential for a short squeeze if buying pressure increases.

These metrics are often used by traders to gauge sentiment, volatility risk, and the potential for price movements based on short covering activity.


Related Companies
Short Interest Tools

This page (NASDAQ:CCOI) was last updated on 5/21/2026 by MarketBeat.com Staff.
From Our Partners
SpaceX eyes a 1.75 trillion valuation - here's what to know
Elon Musk's team has quietly filed confidential paperwork with the SEC for what Bloomberg estimates could be a...
Brownstone Research | Sponsoredtc pixel
$30 stock to buy before Starlink goes public (WATCH NOW!)
In the next 3 minutes… James Altucher – legendary investor and venture capitalist… And someone who’s kno...
Paradigm Press | Sponsoredtc pixel
My feud with Zohran Mamdani
Emmy-winning analyst releases his next big story Whitney Tilson shocked the nation on 60 Minutes when he ac...
Stansberry Research | Sponsoredtc pixel
Iran War Shock: What I Was Told In That Private Meeting
You’re Being LIED To About The Iran War Forget EVERYTHING you’ve heard about the Iran war. Especially th...
Banyan Hill Publishing | Sponsoredtc pixel
Why this tiny stock may move before the SpaceX IPO drops
The projected SpaceX and xAI S-1 filing hits the SEC on June 1st - and analyst Dylan Jovine says $1.75 trillio...
Behind the Markets | Sponsoredtc pixel
Your book attached
Bill Poulos is giving away his 'Safe Trade Options Formula' book for free - but only for a limited time throug...
Profits Run | Sponsoredtc pixel
SpaceX IPO hides a much bigger story
The SpaceX IPO could be the biggest in history at $1.75 trillion - but the real story isn't the IPO itself. ...
Weiss Ratings | Sponsoredtc pixel
Satellite Images Spot Potential $10 Trillion Discovery
'Dark Energy': Elon Musk's Next Potential $10 Trillion Move A highly secure site in West Texas now houses a...
Altimetry | Sponsoredtc pixel