Free Trial
→ $30 stock to buy before Starlink goes public (WATCH NOW!) (From Paradigm Press) (Ad)tc pixel Free COLL Stock Alerts

Collegium Pharmaceutical (COLL) Short Interest Ratio & Short Volume

Collegium Pharmaceutical logo
$34.99 +0.19 (+0.55%)
As of 02:36 PM Eastern
This is a fair market value price provided by Massive. Learn more.
Compare

Collegium Pharmaceutical Short Interest Overview

As of May 29, 2026, Collegium Pharmaceutical (COLL) had a short interest of 5.66 million shares sold short, representing 17.79% of the public float. This marks a -5.04% decrease in short interest since the prior report. The short interest ratio (days to cover) is 17.8, meaning it would take 17.8 days of the average trading volume of 485,573 shares to cover all short positions.

Current Short Interest
5,664,249 shares
Previous Short Interest
5,965,080 shares
Change Vs. Previous Month
-5.04%
Dollar Volume Sold Short
$190.38 million
Short Interest Ratio
17.8 Days to Cover
Last Record Date
May 29, 2026
Outstanding Shares
32,434,000 shares
Short Percent of Float
17.79%
Today's Trading Volume
180,929 shares
Average Trading Volume
485,573 shares
Today's Volume Vs. Average
37%
Short Selling Collegium Pharmaceutical?
A Guide To High-Short-Interest Stocks

Sign up to receive the latest short interest report for Collegium Pharmaceutical 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

COLL Short Interest Over Time

COLL Days to Cover Over Time

COLL Percentage of Float Shorted Over Time

Collegium Pharmaceutical 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
5/29/20265,664,249 shares $190.38 million -5.0%17.8%17.8 $33.61
5/15/20265,965,080 shares $201.50 million +0.5%18.7%11.18 $33.78
4/30/20265,936,417 shares $200.24 million -1.6%18.6%14.44 $33.73
11/14/20255,679,812 shares $261.16 million +5.6%18.4%7.61 $45.98
10/31/20255,376,415 shares $193.55 million +2.8%17.4%17.58 $36.00
10/15/20255,230,000 shares $171.96 million +0.8%17.2%13.1 $32.88
9/30/20255,190,000 shares $181.60 million +16.6%17.0%13.5 $34.99
9/15/20254,450,000 shares $155.39 million +3.0%14.6%11.8 $34.92
8/31/20254,320,000 shares $167.62 million -2.3%14.2%11.8 $38.80
8/15/20254,420,000 shares $166.81 million +4.7%14.5%13.5 $37.74
7/31/20254,220,000 shares $126.01 million +0.2%14.0%13.2 $29.86
7/15/20254,210,000 shares $134.72 million -3.2%13.7%14.4 $32.00
6/30/20254,350,000 shares $128.63 million -9.8%14.1%13.3 $29.57
6/15/20254,820,000 shares $140.65 million -1.6%15.7%14.5 $29.18
5/31/20254,900,000 shares $144.01 million -3.5%15.9%13.4 $29.39
5/15/20255,080,000 shares $149.05 million +11.4%16.5%12.7 $29.34
4/30/20254,560,000 shares $123.12 million +2.0%14.8%11.5 $27.00
4/15/20254,470,000 shares $121.23 million -1.3%14.5%11.1 $27.12
3/31/20254,530,000 shares $135.22 million -14.0%14.7%10.7 $29.85
3/15/20255,270,000 shares $155.25 million -2.6%17.4%12.2 $29.46
2/28/20255,410,000 shares $157.16 million +3.8%17.9%13.1 $29.05
2/15/20255,210,000 shares $154.53 million -8.3%16.8%12.6 $29.66
1/31/20255,680,000 shares $182.44 million +1.1%18.3%12.2 $32.12
1/15/20255,620,000 shares $185.24 million -6.0%18.1%12.2 $32.96
12/31/20245,980,000 shares $171.33 million -0.2%19.2%13.4 $28.65
12/15/20245,990,000 shares $180.24 million -2.0%19.3%13.6 $30.09
11/30/20246,110,000 shares $186.36 million -2.9%19.6%14.4 $30.50
11/15/20246,290,000 shares $186.06 million +1.3%20.2%15.6 $29.58
10/31/20246,210,000 shares $212.01 million +1.0%19.9%16.7 $34.14
10/15/20246,150,000 shares $236.96 million +3.5%19.7%14.6 $38.53
9/30/20245,940,000 shares $229.52 million -6.5%19.0%13.7 $38.64
9/15/20246,350,000 shares $238.13 million +1.0%20.4%15.1 $37.50
8/31/20246,290,000 shares $241.91 million +3.0%20.1%14.1 $38.46
8/15/20246,110,000 shares $216.78 million -1.8%19.6%12.5 $35.48
7/31/20246,220,000 shares $239.91 million -10.1%19.6%11.4 $38.57
7/15/20246,920,000 shares $219.92 million -0.3%21.8%14.4 $31.78
6/30/20246,940,000 shares $223.47 million +4.7%21.9%14.6 $32.20
6/15/20246,630,000 shares $210.57 million -3.2%20.9%14 $31.76
5/31/20246,850,000 shares $227.01 million -1.2%21.6%14.4 $33.14
5/15/20246,930,000 shares $235.48 million +1.0%21.7%14.7 $33.98
The 1934 playbook (Ad)

In 1934, a legal government maneuver transferred billions in wealth overnight. Most Americans never saw it coming — but those who did walked away wealthy.Trump holds that same legal authority today. Advisors close to the administration believe he may use it.If he does, the transfer moves fast. The window to position yourself on the right side is already closing.tc pixel

Get the free report now
4/30/20246,860,000 shares $253.34 million -1.9%21.8%16.4 $36.93
4/15/20246,990,000 shares $245.63 million -1.8%22.9%17.3 $35.14
3/31/20247,120,000 shares $276.40 million +1.6%23.3%17.5 $38.82
3/15/20247,010,000 shares $274.02 million +4.3%22.9%15.7 $39.09
2/29/20246,720,000 shares $246.69 million -1.5%22.0%15.4 $36.71
2/15/20246,820,000 shares $231.54 million +0.9%22.3%16.1 $33.95
1/31/20246,760,000 shares $222.81 million +6.5%21.4%16.3 $32.96
1/15/20246,350,000 shares $206.44 million -0.5%20.1%15.2 $32.51
12/31/20236,380,000 shares $196.38 million -3.6%20.2%15.9 $30.78
12/15/20236,620,000 shares $196.22 million +0.3%20.9%18.5 $29.64
11/30/20236,600,000 shares $169.16 million -2.9%20.8%21.7 $25.63
11/15/20236,800,000 shares $169.73 million +13.1%21.5%22.9 $24.96
10/31/20236,010,000 shares $130.78 million -7.3%17.8%22.3 $21.76
10/15/20236,480,000 shares $141.91 million +0.2%19.2%21.2 $21.90
9/30/20236,470,000 shares $144.60 million -6.5%19.2%21.8 $22.35
9/15/20236,920,000 shares $156.74 million -6.5%20.5%23.6 $22.65
8/31/20237,400,000 shares $173.31 million -3.1%21.9%23.7 $23.42
8/15/20237,640,000 shares $181.83 million +28.6%22.6%24.6 $23.80
7/31/20235,940,000 shares $135.19 million -9.6%17.6%18.7 $22.76
7/15/20236,570,000 shares $141.98 million -1.5%19.5%21.2 $21.61
6/30/20236,670,000 shares $143.34 million +2.0%19.8%20.2 $21.49
6/15/20236,540,000 shares $144.73 million +4.1%19.4%19.4 $22.13
5/31/20236,280,000 shares $138.60 million -1.3%18.6%19.3 $22.07
5/15/20236,360,000 shares $149.46 million +2.1%19.2%17.7 $23.50
4/30/20236,230,000 shares $144.97 million +0.7%18.7%13.5 $23.27
4/15/20236,190,000 shares $141.94 million +6.2%18.9%13.9 $22.93
3/31/20235,830,000 shares $139.86 million +2.3%17.8%12.6 $23.99
3/15/20235,700,000 shares $134.81 million +4.2%17.4%11.9 $23.65
2/28/20235,470,000 shares $145.12 million +16.1%16.8%11.7 $26.53
2/15/20234,710,000 shares $128.44 million +19.5%14.5%10.8 $27.27
1/31/20233,940,000 shares $110.64 million -0.8%12.2%9.4 $28.08
1/15/20233,970,000 shares $114.06 million +8.5%12.3%13 $28.73
12/30/20223,660,000 shares $84.91 million +2.0%11.3%13 $23.20
12/15/20223,590,000 shares $80.74 million -4.5%11.1%15.8 $22.49
11/30/20223,760,000 shares $82.23 million -4.3%11.6%16.5 $21.87
11/15/20223,930,000 shares $84.61 million +2.3%12.2%17.1 $21.53
10/31/20223,840,000 shares $68.89 million -1.5%11.9%17.3 $17.94
10/15/20223,900,000 shares $69.77 million +2.6%11.9%17.7 $17.89
9/30/20223,800,000 shares $60.88 million +3.0%11.6%16.5 $16.02
9/15/20223,690,000 shares $66.75 million +1.9%11.3%14.4 $18.09
8/31/20223,620,000 shares $63.64 million -1.9%11.1%13.8 $17.58
8/15/20223,690,000 shares $69.34 million +3.4%11.3%13.3 $18.79
7/31/20223,570,000 shares $61.37 million +1.4%11.0%11.3 $17.19
7/15/20223,520,000 shares $58.19 million -2.5%10.8%10.5 $16.53
6/30/20223,610,000 shares $63.97 million -2.7%11.1%10.1 $17.72
6/15/20223,710,000 shares $59.81 million +7.2%11.4%9.9 $16.12
5/31/20223,460,000 shares $54.05 million +4.2%10.6%9.7 $15.62
5/15/20223,320,000 shares $51.92 million No Change10.2%8.2 $15.64
4/30/20223,320,000 shares $53.45 million -0.9%10.2%7.6 $16.10
4/15/20223,350,000 shares $64.25 million -2.1%10.3%8.1 $19.18
The 1934 playbook (Ad)

In 1934, a legal government maneuver transferred billions in wealth overnight. Most Americans never saw it coming — but those who did walked away wealthy.Trump holds that same legal authority today. Advisors close to the administration believe he may use it.If he does, the transfer moves fast. The window to position yourself on the right side is already closing.tc pixel

Get the free report now
3/31/20223,420,000 shares $69.63 million -0.3%10.6%9 $20.36
3/15/20223,430,000 shares $62.22 million -5.3%10.7%10.1 $18.14
2/28/20223,620,000 shares $70.48 million +4.6%11.3%10.4 $19.47
2/15/20223,460,000 shares $75.50 million +4.5%10.4%10.6 $21.82
1/31/20223,310,000 shares $59.08 million -2.4%9.9%13 $17.85
1/15/20223,390,000 shares $62.85 million -2.0%10.1%11.8 $18.54
12/31/20213,460,000 shares $64.63 million -5.7%10.3%12.3 $18.68
12/15/20213,670,000 shares $68.45 million -15.4%11.0%12.6 $18.65
11/30/20214,340,000 shares $76.30 million -9.6%12.9%15.7 $17.58
11/15/20214,800,000 shares $96.05 million +24.7%14.3%17.8 $20.01
10/29/20213,850,000 shares $75.58 million +2.7%11.5%13 $19.63
10/15/20213,750,000 shares $78.68 million +1.1%10.9%13.2 $20.98
9/30/20213,710,000 shares $73.24 million +2.5%10.8%12.5 $19.74
9/15/20213,620,000 shares $71.89 million +6.8%10.5%12 $19.86
8/31/20213,390,000 shares $69.60 million -6.4%9.8%11.4 $20.53
8/13/20213,620,000 shares $64.26 million -12.1%10.5%11.9 $17.75
7/30/20214,120,000 shares $102.55 million -3.3%12.0%15 $24.89
7/15/20214,260,000 shares $100.20 million +1.7%12.5%17.2 $23.52
6/30/20214,190,000 shares $99.05 million -3.2%12.2%17.7 $23.64
6/15/20214,330,000 shares $99.37 million +7.2%12.6%17.3 $22.95

COLL Short Interest - Frequently Asked Questions

Short interest is the volume of Collegium Pharmaceutical shares that have been sold short but have not yet been covered or closed out. As of May 29th, traders have sold 5,664,249 shares of COLL short. 17.79% of Collegium Pharmaceutical's shares are currently sold short. Learn More on Collegium Pharmaceutical's 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. COLL shares currently have a short interest ratio of 17.8. Learn More on Collegium Pharmaceutical's short interest ratio.

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. 17.79% of Collegium Pharmaceutical's floating shares are currently sold short.

Collegium Pharmaceutical saw a decrease in short interest in May. As of May 29th, there was short interest totaling 5,664,249 shares, a decrease of 5.0% from the previous total of 5,965,080 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.

17.79% of Collegium Pharmaceutical's shares are currently sold short. Here is how the short interest of companies in the industry of "pharmaceutical products" compare to Collegium Pharmaceutical: Twist Bioscience Corporation (24.69%), Travere Therapeutics, Inc. (15.89%), Erasca, Inc. (11.95%), Veradermics, Incorporated (5.66%), Edgewise Therapeutics, Inc. (12.89%), Catalyst Pharmaceuticals, Inc. (7.47%), Kiniksa Pharmaceuticals International, plc (8.23%), ACADIA Pharmaceuticals Inc. (9.30%), NewAmsterdam Pharma Company N.V. (7.94%), Oruka Therapeutics, Inc. (13.81%),

As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($81.27 billion), Invesco QQQ ($49.06 billion), iShares Russell 2000 ETF ($23.61 billion), Western Digital Corporation ($16.93 billion), Sandisk Corporation ($15.61 billion), Salesforce Inc. ($11.65 billion), SPDR S&P Biotech ETF ($10.52 billion), Nebius Group N.V. ($10.24 billion), Lumentum Holdings Inc. ($8.74 billion), and iShares iBoxx $ High Yield Corporate Bond ETF ($8.21 billion). View all of the most shorted stocks.

Short selling COLL is an investing strategy that aims to generate trading profit from Collegium Pharmaceutical as its price is falling. COLL shares are trading up $0.19 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 Collegium Pharmaceutical occurs when it has a large amount of short interest and its stock increases in price. This forces short sellers to cover their short interest positions by buying actual shares of COLL, 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 COLL, twice per month. The most recent reporting period available is May, 29 2026.

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

  • 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:COLL) was last updated on 6/11/2026 by MarketBeat.com Staff.
From Our Partners
The 1934 playbook
In 1934, a legal government maneuver transferred billions in wealth overnight. Most Americans never saw it com...
American Alternative | Sponsoredtc pixel
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
Trump's gold order: the announcement they won't put on the front page
On August 15, 1971, Nixon interrupted prime-time television and ended the gold standard in 15 minutes - no deb...
Reagan Gold Group | Sponsoredtc pixel
Louis Navellier: My #1 AI stock for 2026 (name & ticker inside)
Louis Navellier's Stock Grader system helped him flag Nvidia before its 82,000% run and has identified the top...
InvestorPlace | Sponsoredtc pixel
Your book attached
Your Download Link (Expiring) If you still haven't downloaded the free Simple Options Trading For Beginners...
Profits Run | Sponsoredtc pixel
SpaceX just filed. The clock is ticking.
Reuters reports Elon Musk filed secretly. Barron's says it's being finalized behind closed doors. CNBC just re...
The Oxford Club | 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