Go Pro
→ Trump’s New Currency Reset (From Porter & Company) (Ad)tc pixel Free IRWD Stock Alerts

Ironwood Pharmaceuticals (IRWD) Short Interest Ratio & Short Volume

Ironwood Pharmaceuticals logo
$4.29 -0.10 (-2.28%)
As of 03:34 PM Eastern
Compare

Ironwood Pharmaceuticals Short Interest Overview

As of August 14, 2026, Ironwood Pharmaceuticals (IRWD) had a short interest of 18.07 million shares sold short, representing 12.05% of the public float. This marks a 9.21% increase 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 3.17 million shares to cover all short positions.

Current Short Interest
18,066,382 shares
Previous Short Interest
16,542,403 shares
Change Vs. Previous Month
9.21%
Dollar Volume Sold Short
$77.87 million
Short Interest Ratio
6.4 Days to Cover
Last Record Date
August 14, 2026
Outstanding Shares
165,240,000 shares
Short Percent of Float
12.05%
Today's Trading Volume
679,888 shares
Average Trading Volume
3,173,829 shares
Today's Volume Vs. Average
21%
Short Selling Ironwood Pharmaceuticals?
A Guide To High-Short-Interest Stocks

Sign up to receive the latest short interest report for Ironwood Pharmaceuticals 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

IRWD Short Interest Over Time

IRWD Days to Cover Over Time

IRWD Percentage of Float Shorted Over Time

Ironwood Pharmaceuticals 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
8/14/202618,066,382 shares $77.87 million +9.2%12.1%6.44 $4.31
7/31/202616,542,403 shares $69.97 million -3.8%11.2%10.04 $4.23
7/15/202617,191,892 shares $68.77 million +5.9%11.6%6.32 $4.00
6/30/202616,230,028 shares $68.33 million +2.1%11.0%5.65 $4.21
6/15/202615,898,991 shares $58.67 million +5.9%10.8%8.18 $3.69
5/29/202615,018,969 shares $53.62 million -13.4%10.2%6 $3.57
5/15/202617,334,279 shares $62.06 million +0.4%11.7%5.77 $3.58
4/30/202617,266,421 shares $71.31 million -5.1%11.7%10.51 $4.13
4/15/202618,191,102 shares $79.50 million +1.6%12.3%10.2 $4.37
3/31/202617,904,692 shares $62.85 million +30.7%12.1%4.67 $3.51
3/13/202613,703,587 shares $46.18 million +6.1%9.6%6.65 $3.37
2/27/202612,917,285 shares $44.18 million +15.8%9.1%3.24 $3.42
2/13/202611,159,224 shares $50.22 million +17.9%7.5%4.52 $4.50
1/30/20269,464,516 shares $46.28 million +5.1%6.7%3.52 $4.89
1/15/20269,007,479 shares $40.71 million +10.6%6.3%0.73 $4.52
12/31/20258,147,450 shares $27.46 million +11.2%5.7%3.22 $3.37
12/15/20257,329,764 shares $26.31 million -1.8%5.2%3.79 $3.59
11/28/20257,464,531 shares $26.13 million +4.3%5.3%2.75 $3.50
11/14/20257,154,955 shares $22.47 million +50.2%5.0%1.48 $3.14
10/31/20254,762,545 shares $9.14 million +1.3%3.4%4.03 $1.92
10/15/20254,700,000 shares $7.57 million -9.1%3.0%3.5 $1.61
9/30/20255,170,000 shares $6.77 million -9.5%3.3%3.8 $1.31
9/15/20255,710,000 shares $7.31 million -5.8%3.7%4 $1.28
8/31/20256,060,000 shares $8.00 million -0.2%3.9%3.5 $1.32
8/15/20256,070,000 shares $6.25 million +12.8%3.9%3.1 $1.03
7/31/20255,380,000 shares $4.11 million -17.6%3.5%2.4 $0.76
7/15/20256,530,000 shares $4.49 million -12.7%4.2%2.7 $0.69
6/30/20257,480,000 shares $5.36 million -2.2%4.8%2.3 $0.72
6/15/20257,650,000 shares $4.74 million -7.1%4.9%2.4 $0.62
5/31/20258,230,000 shares $4.97 million -2.8%5.3%2.4 $0.60
5/15/20258,470,000 shares $5.03 million -3.8%5.4%2.6 $0.59
4/30/20258,800,000 shares $8.20 million -24.4%5.6%2.3 $0.93
4/15/202511,640,000 shares $8.41 million +3.5%7.4%3 $0.72
3/31/202511,250,000 shares $16.54 million -30.8%7.2%3.5 $1.47
3/15/202516,250,000 shares $24.21 million +34.9%10.5%4.9 $1.49
2/28/202512,050,000 shares $19.40 million +12.6%7.8%3.8 $1.61
2/15/202510,700,000 shares $20.54 million -0.5%6.9%3.6 $1.92
1/31/202510,750,000 shares $25.16 million +13.8%6.9%3.7 $2.34
1/15/20259,450,000 shares $35.34 million +2.5%6.1%5 $3.74
12/31/20249,220,000 shares $40.84 million -23.7%5.9%5 $4.43
The end may be near for these iconic stocks (Ad)

Marc Chaikin, founder of Chaikin Analytics, says two forces - AI disruption and fracturing global trade - are triggering a historic wealth transfer already underway in 2026. Household names like Intuit (-57%), Boston Scientific (-49%), and Tractor Supply (-40%) are cratering, while lesser-known companies like Sandisk (+573%) and Rackspace (+444%) surge. Chaikin has identified specific stocks he believes investors should sell before they fall further - and the names may surprise you. He's also pinpointing a company tapped as Nvidia's self-driving partner and a potential AI megadeal that could split into three high-growth stocks. Stream his free presentation to get every buy and sell recommendation with no membership or credit card required.tc pixel

Watch Marc Chaikin's free presentation and get his full buy-and-sell list today
12/15/202412,080,000 shares $42.64 million +7.7%7.8%6.9 $3.53
11/30/202411,220,000 shares $39.49 million +30.9%7.2%7.1 $3.52
11/15/20248,570,000 shares $36.08 million -21.8%5.5%5.3 $4.21
10/31/202410,960,000 shares $43.29 million -8.1%7.0%6.6 $3.95
10/15/202411,930,000 shares $52.37 million +1.2%7.7%6.3 $4.39
9/30/202411,790,000 shares $48.57 million +1.6%7.6%5.9 $4.12
9/15/202411,610,000 shares $53.06 million -14.6%7.5%5.7 $4.57
8/31/202413,600,000 shares $68.82 million -2.9%8.7%5.9 $5.06
8/15/202414,000,000 shares $62.30 million -11.4%9.0%6 $4.45
7/31/202415,800,000 shares $107.91 million -6.2%10.2%6.3 $6.83
7/15/202416,850,000 shares $109.19 million -6.8%10.9%6.8 $6.48
6/30/202418,070,000 shares $117.82 million -10.6%11.7%6.9 $6.52
6/15/202420,220,000 shares $117.88 million -10.8%13.1%7.3 $5.83
5/31/202422,660,000 shares $142.76 million +0.8%14.6%6.9 $6.30
5/15/202422,480,000 shares $147.47 million +12.0%14.5%5.2 $6.56
4/30/202420,080,000 shares $155.62 million -5.1%13.0%4.5 $7.75
4/15/202421,160,000 shares $164.84 million -3.6%14.0%4.6 $7.79
3/31/202421,950,000 shares $191.18 million +16.9%14.5%4.6 $8.71
3/15/202418,770,000 shares $169.31 million +21.0%12.4%4 $9.02
2/29/202415,510,000 shares $146.26 million -0.6%10.2%3.8 $9.43
2/15/202415,600,000 shares $233.84 million +7.9%10.3%5.5 $14.99
1/31/202414,460,000 shares $205.19 million -10.1%9.5%5.4 $14.19
1/15/202416,080,000 shares $195.37 million +2.0%12.8%6.5 $12.15
12/31/202315,760,000 shares $180.29 million -7.3%10.3%7.4 $11.44
12/15/202317,000,000 shares $189.21 million +2.3%11.2%7.8 $11.13
11/30/202316,620,000 shares $164.54 million -3.1%10.9%6.8 $9.90
11/15/202317,150,000 shares $167.38 million -1.4%11.3%6.9 $9.76
10/31/202317,390,000 shares $155.99 million -0.9%11.4%6.7 $8.97
10/15/202317,540,000 shares $164.00 million -0.6%11.5%6.8 $9.35
9/30/202317,640,000 shares $169.87 million +20.3%11.6%7.1 $9.63
9/15/202314,660,000 shares $122.26 million -5.4%9.6%6.1 $8.34
8/31/202315,500,000 shares $136.40 million +3.9%10.2%7.2 $8.80
8/15/202314,920,000 shares $147.11 million -1.8%9.8%7.1 $9.86
7/31/202315,190,000 shares $168.46 million -6.5%10.0%7.3 $11.09
7/15/202316,250,000 shares $168.35 million +13.5%10.7%7.9 $10.36
6/30/202314,320,000 shares $152.36 million -17.9%9.5%6.4 $10.64
6/15/202317,450,000 shares $192.47 million -1.0%11.5%7 $11.03
5/31/202317,620,000 shares $191.71 million +6.4%11.6%7.3 $10.88
5/15/202316,560,000 shares $174.38 million -3.3%10.9%6.7 $10.53
4/30/202317,130,000 shares $178.32 million -14.9%11.3%7.3 $10.41
4/15/202320,130,000 shares $221.23 million +14.1%13.4%8.8 $10.99
3/31/202317,640,000 shares $185.57 million +8.0%11.8%7.6 $10.52
3/15/202316,330,000 shares $170.32 million +1.0%10.9%8.4 $10.43
2/28/202316,170,000 shares $182.24 million +1.4%10.7%8.3 $11.27
2/15/202315,950,000 shares $178.64 million -0.1%10.6%8.4 $11.20
1/31/202315,970,000 shares $183.97 million +0.1%10.7%8.5 $11.52
1/15/202315,950,000 shares $184.86 million -2.6%10.7%8.7 $11.59
12/30/202216,370,000 shares $202.82 million -3.4%10.9%8.8 $12.39
12/15/202216,950,000 shares $204.25 million +2.8%11.4%8.9 $12.05
11/30/202216,490,000 shares $199.69 million -12.3%11.1%8.2 $12.11
It’s not about Greenland (Ad)

The petrodollar arrangement that anchored the US dollar for 50 years quietly expired in June 2024. Since then, China has cut its Treasury holdings by 45% from their peak, and BRICS nations offloaded $47 billion of American debt in a single month. The Trump administration has responded with a $12 billion critical minerals stockpile called Project Vault, equity stakes in miners like MP Materials and Lithium Americas, and a push to secure resources from Greenland to Ukraine. Porter Stansberry lays out the full story in a new documentary, including five companies positioned at the chokepoints of what he calls Trump's New Dollar.tc pixel

Watch the full documentary before December's economic summit in Miami
11/15/202218,810,000 shares $214.62 million +9.7%12.6%8.9 $11.41
10/31/202217,150,000 shares $187.62 million -1.6%11.4%8.1 $10.94
10/15/202217,420,000 shares $175.77 million +0.2%11.7%7.5 $10.09
9/30/202217,390,000 shares $180.16 million -3.3%11.7%7.5 $10.36
9/15/202217,980,000 shares $196.16 million -1.1%12.1%7.6 $10.91
8/31/202218,170,000 shares $195.51 million -0.4%12.2%6 $10.76
8/15/202218,240,000 shares $217.24 million +0.9%12.3%5.5 $11.91
7/31/202218,080,000 shares $207.02 million +3.3%12.1%5.3 $11.45
7/15/202217,510,000 shares $203.99 million -6.1%11.7%5.4 $11.65
6/30/202218,650,000 shares $215.03 million +32.5%12.5%5.7 $11.53
6/15/202214,080,000 shares $163.05 million -4.1%9.4%4.3 $11.58
5/31/202214,680,000 shares $165.44 million -7.7%9.8%5.6 $11.27
5/15/202215,900,000 shares $184.28 million -2.8%10.6%6.5 $11.59
4/30/202216,350,000 shares $196.20 million -3.3%10.9%6.5 $12.00
4/15/202216,900,000 shares $208.21 million +5.3%10.9%6.6 $12.32
3/31/202216,050,000 shares $201.91 million +6.2%N/A6 $12.58
3/15/202215,110,000 shares $180.26 million +22.3%9.8%5.9 $11.93
2/28/202212,360,000 shares $132.99 million -6.5%8.0%5 $10.76
2/15/202213,220,000 shares $144.10 million -17.6%8.5%5.4 $10.90
1/31/202216,050,000 shares $178.96 million -3.7%10.1%7.1 $11.15
1/15/202216,670,000 shares $195.37 million -2.1%N/A7.5 $11.72
12/31/202117,030,000 shares $198.57 million -7.0%10.7%8.5 $11.66
12/15/202118,320,000 shares $207.93 million -11.3%11.5%8.9 $11.35
11/30/202120,650,000 shares $229.01 million -1.5%12.9%10.2 $11.09
11/15/202120,960,000 shares $255.50 million -7.0%13.1%11.2 $12.19
10/29/202122,540,000 shares $287.84 million +10.4%14.1%12.1 $12.77
10/15/202120,420,000 shares $278.94 million -0.1%12.9%12 $13.66
9/30/202120,430,000 shares $266.82 million +2.0%12.9%11.7 $13.06
9/15/202120,040,000 shares $242.28 million -4.1%12.6%11.1 $12.09
8/31/202120,890,000 shares $273.66 million +0.2%13.2%11.2 $13.10

IRWD Short Interest - Frequently Asked Questions

Short interest is the volume of Ironwood Pharmaceuticals shares that have been sold short but have not yet been covered or closed out. As of August 14th, traders have sold 18,066,382 shares of IRWD short. 12.05% of Ironwood Pharmaceuticals' shares are currently sold short. Learn More on Ironwood Pharmaceuticals' 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. IRWD shares currently have a short interest ratio of 6.4. Learn More on Ironwood Pharmaceuticals'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. 12.05% of Ironwood Pharmaceuticals' floating shares are currently sold short.

Ironwood Pharmaceuticals saw a increase in short interest during the month of August. As of August 14th, there was short interest totaling 18,066,382 shares, an increase of 9.2% from the previous total of 16,542,403 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.

12.05% of Ironwood Pharmaceuticals' shares are currently sold short. Here is how the short interest of companies in the industry of "biotechnology" compare to Ironwood Pharmaceuticals: AbbVie Inc. (1.04%), Zai Lab Limited Unsponsored ADR (6.90%), Nurix Therapeutics, Inc. (18.57%), Beam Therapeutics Inc. (24.53%), SELLAS Life Sciences Group, Inc. (28.28%), Viridian Therapeutics, Inc. (17.21%), Ultragenyx Pharmaceutical Inc. (17.00%), BioCryst Pharmaceuticals, Inc. (13.40%), Kodiak Sciences Inc. (29.49%), Nektar Therapeutics (18.53%),

As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($71.57 billion), Invesco QQQ ($46.97 billion), iShares Russell 2000 ETF ($24.02 billion), Nebius Group N.V. ($15.37 billion), Sandisk Corporation ($12.60 billion), SPDR S&P Biotech ETF ($12.14 billion), Western Digital Corporation ($10.32 billion), iShares 20+ Year Treasury Bond ETF ($8.38 billion), VanEck Semiconductor ETF ($7.62 billion), and iShares iBoxx $ High Yield Corporate Bond ETF ($7.07 billion). View all of the most shorted stocks.

Short selling IRWD is an investing strategy that aims to generate trading profit from Ironwood Pharmaceuticals as its price is falling. IRWD shares are trading down $0.07 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 Ironwood Pharmaceuticals 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 IRWD, 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 IRWD, twice per month. The most recent reporting period available is August, 14 2026.

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

  • 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

Short interest data for NASDAQ:IRWD is sourced from the Financial Industry Regulatory Authority (FINRA), with the most recent report published on 8/25/2026. FINRA publishes updated short interest twice a month.
From Our Partners
A $382 trillion migration and the position no one is talking about
Trump just signed a law requiring America's entire $382 trillion financial system to migrate to a new money ne...
Awesomely | Sponsoredtc pixel
Bezos… DOOMED
A single FCC filing hints Elon Musk is planning his biggest project yet - bigger than Tesla, SpaceX, and X com...
Paradigm Press | Sponsoredtc pixel
The New Kings of Cantillon
In 1720, Richard Cantillon discovered that new money never spreads evenly through an economy. It reaches certa...
Porter & Company | Sponsoredtc pixel
Your withdrawal order could cost you in taxes
If you have $2M or more saved, the 4% rule points to roughly $92,000 a year - but it's a single-variable answe...
SmartAsset | Sponsoredtc pixel
The trade I’ve been waiting for since 2011
Ross Givens, Director of Research at Traders Agency, is calling for gold to reach $10,000 an ounce this superc...
Traders Agency | 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
Trump Unleashes "Banned" American Fuel
A newly reopened American mine holds a fuel source so potent that one pound can generate as much energy as 16,...
Monument Traders Alliance | Sponsoredtc pixel
Buy this stock today
Most tech companies skip dividends entirely. This one doesn't, paying shareholders like clockwork while flying...
Chaikin Analytics | Sponsoredtc pixel