89bio (ETNB) Short Interest Ratio & Short Volume $9.62 -0.42 (-4.18%) As of 06/12/2025 04:00 PM Eastern Add Compare Share Share Short Interest Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock 89bio Short Interest Data89bio (ETNB) has a short interest of 13.93 million shares, representing 13.50% of the float (the number of shares available for trading by the public). This marks a -10.01% decrease in short interest from the previous month. The short interest ratio (days to cover) is 6.8, indicating that it would take 6.8 days of the average trading volume of 1.48 million shares to cover all short positions.Current Short Interest13,930,000 sharesPrevious Short Interest15,480,000 sharesChange Vs. Previous Month-10.01%Dollar Volume Sold Short$138.60 millionShort Interest Ratio6.8 Days to CoverLast Record DateMay 31, 2025Outstanding Shares145,984,000 sharesShort Percent of Float13.50%Today's Trading Volume4,548,977 sharesAverage Trading Volume1,479,410 sharesToday's Volume Vs. Average307% Short Selling 89bio? Sign up to receive the latest short interest report for 89bio and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartETNB Short Interest Over TimeETNB Days to Cover Over TimeETNB Percentage of Float Shorted Over Time 89bio Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 5/31/202513,930,000 shares $138.60 million -10.0%13.5%6.8 $9.95 5/15/202515,480,000 shares $118.27 million -10.6%15.0%7.7 $7.64 4/30/202517,310,000 shares $138.83 million +1.6%N/A9.4 $8.02 4/15/202517,030,000 shares $103.03 million +11.8%16.5%6.6 $6.05 3/31/202515,230,000 shares $110.72 million +38.3%14.8%6 $7.27 3/15/202511,010,000 shares $93.25 million +14.1%10.7%4.7 $8.47 2/28/20259,650,000 shares $89.07 million +5.7%9.4%4.5 $9.23 2/15/20259,130,000 shares $96.50 million +9.5%8.9%4.6 $10.57 1/31/20258,340,000 shares $80.06 million -0.1%N/A4.2 $9.60 1/15/20258,350,000 shares $52.35 million +7.2%N/A5.8 $6.27 Get the Latest News and Ratings for ETNB and Related StocksEnter your email address below to receive the latest news and analysts' ratings for 89bio and its competitors with MarketBeat's FREE daily newsletter. 12/31/20247,790,000 shares $60.92 million +12.3%N/A8.3 $7.82 12/15/20246,940,000 shares $53.37 million +18.0%N/A7.4 $7.69 11/30/20245,880,000 shares $52.86 million +6.5%N/A7.7 $8.99 11/15/20245,520,000 shares $43.77 million +2.6%N/A7.9 $7.93 10/31/20245,380,000 shares $41.86 million No ChangeN/A9.3 $7.78 10/15/20245,380,000 shares $43.15 million -16.6%N/A9.7 $8.02 9/30/20246,450,000 shares $47.73 million -7.1%N/A10.5 $7.40 9/15/20246,940,000 shares $58.85 million +1.5%N/A9.5 $8.48 8/31/20246,840,000 shares $64.98 million No ChangeN/A8.1 $9.50 8/15/20246,840,000 shares $55.88 million +5.2%N/A7.2 $8.17 7/31/20246,500,000 shares $59.54 million +5.5%N/A6.6 $9.16 7/15/20246,160,000 shares $55.44 million -4.1%N/A6.2 $9.00 6/30/20246,420,000 shares $51.42 million -28.8%N/A6.7 $8.01 6/15/20249,020,000 shares $79.11 million -14.7%N/A10 $8.77 5/31/202410,580,000 shares $83.58 million +4.6%N/A11.4 $7.90 5/15/202410,120,000 shares $93.10 million -5.9%N/A9.6 $9.20 4/30/202410,750,000 shares $91.48 million -4.1%N/A9.4 $8.51 4/15/202411,210,000 shares $106.38 million -2.9%N/A8.9 $9.49 3/31/202411,550,000 shares $134.44 million +4.0%N/A8.8 $11.64 3/15/202411,110,000 shares $150.21 million +2.3%N/A8.2 $13.52 2/29/202410,860,000 shares $124.56 million +2.7%N/A7.6 $11.47 2/15/202410,580,000 shares $103.58 million +9.9%N/A7.8 $9.79 1/31/20249,630,000 shares $95.34 million +7.2%N/A7.1 $9.90 1/15/20248,980,000 shares $99.59 million +5.9%N/A6.7 $11.09 12/31/20238,480,000 shares $94.72 million +24.5%N/A4.9 $11.17 12/15/20236,810,000 shares $72.19 million +12.0%N/A3.9 $10.60 11/30/20236,080,000 shares $48.88 million +0.7%N/A3.6 $8.04 11/15/20236,040,000 shares $45.96 million +11.2%N/A3.9 $7.61 10/31/20235,430,000 shares $40.18 million -19.1%N/A3.7 $7.40 10/15/20236,710,000 shares $51.13 million +6.0%N/A4.7 $7.62The End of Elon Musk…? (Ad)The End of Elon Musk? Don't make him laugh. Jeff Brown has been hearing this same tired story for years, and he's been proven right time and time again. And now, while the media focuses on Tesla's "demise," he's uncovered an AI breakthrough that's about to make Elon's doubters eat their words yet again. According to his research, if you listen to the media and miss out on Elon's newest breakthrough, it's going to cost you the fortune of a lifetime.Click here to see why the "End of Elon" crowd is about to be wrong again. 9/30/20236,330,000 shares $97.74 million +7.5%N/A5.6 $15.44 9/15/20235,890,000 shares $102.25 million -6.4%N/A5.7 $17.36 8/31/20236,290,000 shares $107.81 million -28.4%N/A5.3 $17.14 8/15/20238,780,000 shares $147.07 million +9.5%N/A6.9 $16.75 7/31/20238,020,000 shares $127.04 million -11.2%N/A6 $15.84 7/15/20239,030,000 shares $164.80 million -5.0%N/A6.7 $18.25 6/30/20239,500,000 shares $180.03 million +36.5%N/A6.6 $18.95 6/15/20236,960,000 shares $144.00 million -2.3%N/A4 $20.69 5/31/20237,120,000 shares $129.80 million -1.4%N/A3.2 $18.23 5/15/20237,220,000 shares $129.02 million -4.4%N/A3.3 $17.87 4/30/20237,550,000 shares $120.65 million -1.2%N/A3.4 $15.98 4/15/20237,640,000 shares $118.57 million -5.1%N/A3.5 $15.52 3/31/20238,050,000 shares $122.60 million +44.0%N/A3.9 $15.23 3/15/20235,590,000 shares $71.50 million +8.5%N/A2.9 $12.79 2/28/20235,150,000 shares $70.14 million +10.8%N/A4.8 $13.62 2/15/20234,650,000 shares $60.45 million No ChangeN/A4.5 $13.00 1/31/20234,650,000 shares $54.31 million +8.6%N/A4.8 $11.68 1/15/20234,280,000 shares $44.94 million -3.4%N/A4.8 $10.50 12/30/20224,430,000 shares $56.39 million -7.1%N/A4.9 $12.73 12/15/20224,770,000 shares $49.37 million +30.3%N/A5.3 $10.35 11/30/20223,660,000 shares $29.28 million No ChangeN/A2.7 $8.00 11/15/20223,660,000 shares $35.83 million -0.3%N/A2.8 $9.79 10/31/20223,670,000 shares $35.05 million -3.2%N/A2.8 $9.55 10/15/20223,790,000 shares $29.07 million +28.0%N/A3 $7.67 9/30/20222,960,000 shares $17.14 million -6.0%N/A2.6 $5.79 9/15/20223,150,000 shares $18.43 million +55.2%N/A2.7 $5.85 8/31/20222,030,000 shares $9.05 million +1.0%N/A4.2 $4.46 8/15/20222,010,000 shares $9.53 million +34.9%N/A4.1 $4.74 7/31/20221,490,000 shares $5.29 million -2.6%N/A3.3 $3.55 7/15/20221,530,000 shares $5.31 million +75.0%N/A3.7 $3.47 6/30/2022874,500 shares $2.82 million -15.9%N/A2.2 $3.22 6/15/20221,040,000 shares $3.28 million -7.1%7.3%3.8 $3.15 5/31/20221,120,000 shares $3.37 million +16.1%7.8%4.6 $3.01 5/15/2022964,800 shares $2.55 million +20.1%6.8%5 $2.64 4/30/2022803,200 shares $1.74 million +17.1%5.6%4.1 $2.17 4/15/2022686,200 shares $2.02 million +5.5%4.8%3.4 $2.95 3/31/2022650,300 shares $2.45 million -9.5%4.6%3.6 $3.77 3/15/2022718,900 shares $2.57 million +10.9%5.1%4.1 $3.58 2/28/2022648,300 shares $3.00 million -6.4%4.6%3.8 $4.63 2/15/2022692,700 shares $3.50 million -1.8%4.9%4.1 $5.05 1/31/2022705,500 shares $4.16 million +14.7%5.2%5 $5.89 1/15/2022615,100 shares $7.46 million +5.4%4.5%7.5 $12.12 12/31/2021583,500 shares $7.63 million +93.3%4.3%7.5 $13.07 12/15/2021301,800 shares $3.68 million -37.2%2.2%3.9 $12.19 11/30/2021480,800 shares $6.35 million +1.0%3.5%6.3 $13.21 11/15/2021475,900 shares $8.11 million -40.1%3.5%6.4 $17.05 10/29/2021793,900 shares $13.97 million -5.8%5.9%10.1 $17.60 10/15/2021843,000 shares $15.23 million -10.0%6.3%10 $18.07 9/30/2021936,100 shares $18.34 million -0.3%7.0%10.7 $19.59 9/15/2021938,900 shares $18.84 million -5.7%7.0%9.5 $20.07The End of Elon Musk…? (Ad)The End of Elon Musk? Don't make him laugh. Jeff Brown has been hearing this same tired story for years, and he's been proven right time and time again. And now, while the media focuses on Tesla's "demise," he's uncovered an AI breakthrough that's about to make Elon's doubters eat their words yet again. According to his research, if you listen to the media and miss out on Elon's newest breakthrough, it's going to cost you the fortune of a lifetime.Click here to see why the "End of Elon" crowd is about to be wrong again. 8/31/2021995,600 shares $18.43 million -8.7%7.5%10.1 $18.51 8/13/20211,090,000 shares $20.12 million -9.2%8.2%9.7 $18.46 7/30/20211,200,000 shares $18.79 million +2.6%9.0%11 $15.66 7/15/20211,170,000 shares $19.54 million +13.6%6.9%11.5 $16.70 6/30/20211,030,000 shares $19.26 million -27.5%6.0%9.7 $18.70 6/15/20211,420,000 shares $28.05 million -0.7%8.3%14.9 $19.75 5/28/20211,430,000 shares $27.03 million +8.3%8.4%14.8 $18.90 5/14/20211,320,000 shares $26.89 million -1.5%7.7%13.7 $20.37 4/30/20211,340,000 shares $36.15 million -0.7%7.9%14 $26.98 4/15/20211,350,000 shares $32.10 million +20.5%N/A0 $23.78 3/31/20211,120,000 shares $26.57 million No Change6.6%7.6 $23.72 3/15/20211,120,000 shares $28.07 million -3.5%6.6%6.4 $25.06 2/26/20211,160,000 shares $28.85 million -0.9%6.9%6.4 $24.87 2/12/20211,170,000 shares $28.03 million No Change6.9%6.5 $23.96 1/29/20211,170,000 shares $23.66 million +17.4%7.0%6.1 $20.22 1/15/2021996,900 shares $21.49 million +41.2%6.0%5.2 $21.56 12/31/2020705,900 shares $18.06 million +30.9%4.2%3.8 $25.58 12/15/2020539,100 shares $14.26 million -4.0%3.2%3.2 $26.45 11/30/2020561,800 shares $15.33 million +82.3%3.4%2.8 $27.28 11/15/2020308,100 shares $8.28 million +14.3%1.8%1.5 $26.88 10/30/2020269,600 shares $6.50 million +41.8%1.7%1.5 $24.12 10/15/2020190,200 shares $4.55 million -61.9%1.2%1.2 $23.90 9/30/2020498,500 shares $12.79 million +175.9%3.1%3.4 $25.66 9/15/2020180,700 shares $5.50 million +29.8%1.2%1.1 $30.44 8/31/2020139,200 shares $5.36 million +14.7%1.1%1.4 $38.50 8/14/2020121,400 shares $3.66 million -59.5%0.9%1.2 $30.15 7/31/2020299,900 shares $9.11 million +120.5%2.5%3.2 $30.38 7/15/2020136,000 shares $4.23 million -82.4%1.1%1.5 $31.12 6/30/2020774,200 shares $15.43 million +36.6%7.7%9 $19.93 6/15/2020566,900 shares $14.67 million +1.4%5.6%13.1 $25.87 ETNB Short Interest - Frequently Asked Questions What is 89bio's current short interest? Short interest is the volume of 89bio shares that have been sold short but have not yet been covered or closed out. As of May 31st, traders have sold 13,930,000 shares of ETNB short. 13.50% of 89bio's shares are currently sold short. Learn More on 89bio's current short interest. What is a good short interest ratio for 89bio? 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. ETNB shares currently have a short interest ratio of 7.0. Learn More on 89bio's short interest ratio. Which institutional investors are shorting 89bio? As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of 89bio: Jane Street Group LLC, Caption Management LLC, Simplex Trading LLC, and Jefferies Financial Group Inc.. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission. What is a good short interest percentage for 89bio? 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. 13.50% of 89bio's floating shares are currently sold short. Is 89bio's short interest increasing or decreasing? 89bio saw a drop in short interest in the month of May. As of May 31st, there was short interest totaling 13,930,000 shares, a drop of 10.0% from the previous total of 15,480,000 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. How does 89bio's short interest compare to its competitors? 13.50% of 89bio's shares are currently sold short. Here is how the short interest of companies in the industry of "pharmaceutical products" compare to 89bio: Grifols, S.A. (1.19%), Lantheus Holdings, Inc. (11.91%), Nuvalent, Inc. (12.65%), Axsome Therapeutics, Inc. (10.25%), ADMA Biologics, Inc. (6.29%), Vaxcyte, Inc. (10.93%), Akero Therapeutics, Inc. (10.75%), Rhythm Pharmaceuticals, Inc. (8.24%), Zai Lab Limited (5.42%), PTC Therapeutics, Inc. (6.52%), Which stocks are the most shorted right now? As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($64.96 billion), Invesco QQQ ($27.88 billion), iShares Russell 2000 ETF ($19.94 billion), iShares 20+ Year Treasury Bond ETF ($9.69 billion), Strategy Incorporated ($8.58 billion), SPDR S&P Biotech ETF ($5.72 billion), Invesco S&P 500 Equal Weight ETF ($5.45 billion), iShares iBoxx $ Investment Grade Corporate Bond ETF ($4.70 billion), Charter Communications, Inc. ($4.54 billion), and Industrial Select Sector SPDR Fund ($4.49 billion). View all of the most shorted stocks. What does it mean to sell short 89bio stock? Short selling ETNB is an investing strategy that aims to generate trading profit from 89bio as its price is falling. ETNB shares are trading down $0.42 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. How does a short squeeze work against 89bio? A short squeeze for 89bio 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 ETNB, which in turn drives the price of the stock up even further. How often is 89bio's short interest reported? Short interest is typically published by a stock exchange once per month. However, NASDAQ publishes a report for U.S. stocks, including ETNB, twice per month. The most recent reporting period available is May, 31 2025. More Short Interest Resources from MarketBeat Related Companies Grifols Short Interest Lantheus Short Interest Nuvalent Short Interest Axsome Therapeutics Short Interest ADMA Biologics Short Interest Vaxcyte Short Interest Akero Therapeutics Short Interest Rhythm Pharmaceuticals Short Interest Zai Lab Short Interest PTC Therapeutics Short Interest Short Interest Tools Stocks to Short Largest Short Interest Positions Short Interest Increases Short Interest Decreases Short Interest Reporting Dates This page (NASDAQ:ETNB) was last updated on 6/13/2025 by MarketBeat.com Staff From Our PartnersUtah’s New Oil FindThe Real Reason 218,000 Acres Just Vanished The government just quietly leased 218,000 acres in the middle ...Stansberry Research | SponsoredWhy July 22nd Could Mean Big Changes for Social SecurityIn a stunning move, President Trump has authorized an AI-led transformation of federal agencies, including Soc...Altimetry | SponsoredTrump’s treachery Trump’s Final Reset Inside the shocking plot to re-engineer America’s financial system…and why you need to ...Porter & Company | SponsoredElon’s NEXT Big IPO?Cancel your internet TODAY!? 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