AstraZeneca (AZN) Short Interest Ratio & Short Volume $79.90 -0.09 (-0.11%) Closing price 08/29/2025 04:00 PM EasternExtended Trading$78.72 -1.18 (-1.48%) As of 08/29/2025 07:43 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. Add Compare Share Share Short Interest Stock AnalysisAnalyst ForecastsChartCompetitorsDividendEarningsFDA EventsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock AstraZeneca Short Interest DataAstraZeneca (AZN) has a short interest of 5.33 million shares, representing 0.17% of the float (the number of shares available for trading by the public). This marks a -14.72% decrease in short interest from the previous month. The short interest ratio (days to cover) is 1.1, indicating that it would take 1.1 days of the average trading volume of 3.75 million shares to cover all short positions.Current Short Interest5,330,000 sharesPrevious Short Interest6,250,000 sharesChange Vs. Previous Month-14.72%Dollar Volume Sold Short$389.57 millionShort Interest Ratio1.1 Days to CoverLast Record DateJuly 31, 2025Outstanding Shares3,101,360,000 sharesShort Percent of Float0.17%Today's Trading Volume2,824,737 sharesAverage Trading Volume3,753,583 sharesToday's Volume Vs. Average75% Short Selling AstraZeneca? Sign up to receive the latest short interest report for AstraZeneca and its competitors with MarketBeat's FREE newsletter. Email Address Get Report View SMS TermsBy 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. 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Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartAZN Short Interest Over TimeAZN Days to Cover Over TimeAZN Percentage of Float Shorted Over Time AstraZeneca Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 7/31/20255,330,000 shares $389.57 million -14.7%0.2%1.1 $73.09 7/15/20256,250,000 shares $439.50 million -8.2%N/A1.4 $70.32 6/30/20256,810,000 shares $475.88 million -8.6%0.2%1.3 $69.88 6/15/20257,450,000 shares $554.43 million +7.7%0.2%1.4 $74.42 5/31/20256,920,000 shares $503.91 million -5.7%0.2%1.2 $72.82 5/15/20257,340,000 shares $498.83 million +52.3%0.2%1.2 $67.96 4/30/20254,820,000 shares $346.03 million -23.9%N/A0.8 $71.79 4/15/20256,330,000 shares $429.62 million -40.3%0.2%1.1 $67.87 3/31/202510,600,000 shares $779.10 million -30.5%0.3%1.8 $73.50 3/15/202515,240,000 shares $1.18 billion -10.2%0.5%2.8 $77.60 Get the Latest News and Ratings for AZN and Related StocksEnter your email address below to receive the latest news and analysts' ratings for AstraZeneca and its competitors with MarketBeat's FREE daily newsletter. 2/28/202516,970,000 shares $1.29 billion +9.8%0.5%3 $76.21 2/15/202515,460,000 shares $1.14 billion -8.7%0.5%2.9 $73.58 1/31/202516,940,000 shares $1.20 billion +12.2%N/A2.8 $70.76 1/15/202515,100,000 shares $991.77 million +19.0%N/A2.5 $65.68 12/31/202412,690,000 shares $831.45 million +26.1%N/A2.3 $65.52 12/15/202410,060,000 shares $669.79 million +36.0%N/A1.8 $66.58 11/30/20247,400,000 shares $500.39 million -8.3%N/A1.4 $67.62 11/15/20248,070,000 shares $510.27 million +74.3%N/A1.5 $63.23 10/31/20244,630,000 shares $329.42 million +14.9%N/A0.9 $71.15 10/15/20244,030,000 shares $313.74 million -25.2%N/A0.9 $77.85 9/30/20245,390,000 shares $419.93 million -16.4%N/A1.2 $77.91 9/15/20246,450,000 shares $504.84 million -27.2%N/A1.5 $78.27 8/31/20248,860,000 shares $776.31 million +4.1%N/A2.1 $87.62 8/15/20248,510,000 shares $722.50 million +49.0%N/A2.1 $84.90 7/31/20245,710,000 shares $451.95 million -1.6%N/A1.4 $79.15 7/15/20245,800,000 shares $453.10 million -9.5%N/A1.4 $78.12 6/30/20246,410,000 shares $499.92 million -19.2%N/A1.4 $77.99 6/15/20247,930,000 shares $631.15 million +18.9%N/A1.6 $79.59 5/31/20246,670,000 shares $520.39 million -13.0%N/A1.3 $78.02 5/15/20247,670,000 shares $590.36 million -10.1%N/A1.4 $76.97 4/30/20248,530,000 shares $647.26 million -0.6%N/A1.3 $75.88 4/15/20248,580,000 shares $589.70 million +12.0%N/A1.4 $68.73 3/31/20247,660,000 shares $518.97 million -26.9%N/A1.2 $67.75 3/15/202410,480,000 shares $694.93 million +13.2%N/A1.7 $66.31 2/29/20249,260,000 shares $594.12 million +3.8%N/A1.5 $64.16 2/15/20248,920,000 shares $560.53 million +117.6%N/A1.4 $62.84 1/31/20244,100,000 shares $273.22 million -29.4%N/A0.7 $66.64 1/15/20245,810,000 shares $403.33 million -6.6%N/A1.1 $69.42 12/31/20236,220,000 shares $418.92 million +8.9%N/A1.1 $67.35 12/15/20235,710,000 shares $370.01 million -27.7%N/A1 $64.80BONUS GUIDE - Ben Stein Prepares For the Next Financial Crisis (Ad)With inflation high, debt soaring, and global tensions rising, a financial storm may be brewing. Economist Ben Stein—drawing on insights from his own experience and his father’s time advising two U.S. presidents—just released a new report on how to help protect your retirement from the next major crisis.Claim your free copy of “How to Survive the Next Financial Crisis” today 11/30/20237,900,000 shares $510.26 million -2.5%N/A1.4 $64.59 11/15/20238,100,000 shares $511.35 million -10.1%N/A1.6 $63.13 10/31/20239,010,000 shares $569.70 million +53.8%N/A1.8 $63.23 10/15/20235,860,000 shares $394.55 million -3.9%N/A1.2 $67.33 9/30/20236,100,000 shares $413.09 million -27.2%N/A1.3 $67.72 9/15/20238,380,000 shares $572.10 million +14.3%N/A1.6 $68.27 8/31/20237,330,000 shares $497.12 million +49.0%N/A1.4 $67.82 8/15/20234,920,000 shares $341.99 million -18.7%N/A0.9 $69.51 7/31/20236,050,000 shares $433.79 million -5.2%N/A1.2 $71.70 7/15/20236,380,000 shares $429.88 million -15.9%N/A1.3 $67.38 6/30/20237,590,000 shares $543.22 million +27.1%N/A1.7 $71.57 6/15/20235,970,000 shares $445.48 million +22.3%N/A1.4 $74.62 5/31/20234,880,000 shares $356.63 million +4.5%N/A1.2 $73.08 5/15/20234,670,000 shares $350.20 million -19.6%N/A1.2 $74.99 4/30/20235,810,000 shares $425.41 million +44.5%N/A1.3 $73.22 4/15/20234,020,000 shares $296.92 million +6.1%N/A0.8 $73.86 3/31/20233,790,000 shares $263.06 million +21.5%N/A0.8 $69.41 3/15/20233,120,000 shares $201.49 million -10.1%N/A0.6 $64.58 2/28/20233,470,000 shares $226.17 million +28.5%N/A0.7 $65.18 2/15/20232,700,000 shares $188.16 million +8.0%N/A0.6 $69.69 1/31/20232,500,000 shares $163.43 million -50.3%N/A0.5 $65.37 1/15/20235,030,000 shares $357.53 million +18.9%N/A1 $71.08 12/30/20224,230,000 shares $286.79 million -14.2%N/A0.8 $67.80 12/15/20224,930,000 shares $343.82 million +13.3%N/A0.9 $69.74 11/30/20224,350,000 shares $295.67 million -6.7%N/A0.7 $67.97 11/15/20224,660,000 shares $298.01 million -14.3%N/A0.7 $63.95 10/31/20225,440,000 shares $319.93 million -5.6%N/A0.8 $58.81 10/15/20225,760,000 shares $316.63 million +20.8%N/A0.9 $54.97 9/30/20224,770,000 shares $261.59 million -25.7%N/A0.7 $54.84 9/15/20226,420,000 shares $373.26 million -29.4%N/A1 $58.14 8/31/20229,090,000 shares $567.03 million -12.5%N/A1.4 $62.38 8/15/202210,390,000 shares $694.16 million -23.8%N/A1.7 $66.81 7/31/202213,640,000 shares $903.38 million -0.2%N/A2.1 $66.23 7/15/202213,670,000 shares $920.81 million +4.2%N/A2 $67.36 6/30/202213,120,000 shares $866.84 million -11.1%N/A1.9 $66.07 6/15/202214,760,000 shares $894.01 million +36.2%N/A2.1 $60.57 5/31/202210,840,000 shares $720.64 million -34.0%N/A1.6 $66.48 5/15/202216,420,000 shares $1.04 billion +39.7%N/A2.1 $63.14 4/30/202211,750,000 shares $780.20 million +8.6%N/A1.5 $66.40 4/15/202210,820,000 shares $747.12 million +39.4%N/A1.3 $69.05 3/31/20227,760,000 shares $514.80 million -1.7%N/A1 $66.34 3/15/20227,890,000 shares $484.21 million -12.6%N/A1.1 $61.37 2/28/20229,030,000 shares $549.75 million +9.7%N/A1.3 $60.88 2/15/20228,230,000 shares $496.27 million +54.7%N/A1.3 $60.30 1/31/20225,320,000 shares $309.68 million -12.8%N/A1 $58.21 1/15/20226,100,000 shares $358.99 million -1.3%N/A1.3 $58.85 12/31/20216,180,000 shares $359.99 million -1.6%N/A1.4 $58.25 12/15/20216,280,000 shares $349.92 million -16.8%N/A1.3 $55.72 11/30/20217,550,000 shares $413.97 million +8.5%N/A1.4 $54.83 11/15/20216,960,000 shares $416.07 million +2.7%N/A1.3 $59.78BONUS GUIDE - Ben Stein Prepares For the Next Financial Crisis (Ad)With inflation high, debt soaring, and global tensions rising, a financial storm may be brewing. Economist Ben Stein—drawing on insights from his own experience and his father’s time advising two U.S. presidents—just released a new report on how to help protect your retirement from the next major crisis.Claim your free copy of “How to Survive the Next Financial Crisis” today 10/29/20216,780,000 shares $422.94 million -5.0%N/A1.3 $62.38 10/15/20217,140,000 shares $429.97 million -0.1%N/A1.2 $60.22 9/30/20217,150,000 shares $429.43 million +9.5%N/A0.7 $60.06 9/15/20216,530,000 shares $368.62 million +1.9%N/A0.7 $56.45 8/31/20216,410,000 shares $373.57 million +14.3%N/A0.6 $58.28 8/13/20215,610,000 shares $328.07 million -25.5%N/A0.5 $58.48 7/30/20217,530,000 shares $431.02 million -94.7%N/A0.7 $57.24 7/15/2021142,900,000 shares $8.14 billion +4.4%N/A14 $56.96 6/30/2021136,940,000 shares $8.20 billion +1.4%5.2%17.4 $59.90 6/15/2021135,110,000 shares $7.95 billion +2.3%5.2%17 $58.84 5/28/2021132,060,000 shares $7.50 billion +5.3%5.0%15.5 $56.77 5/14/2021125,410,000 shares $6.90 billion +6.2%N/A12.8 $55.05 4/30/2021118,090,000 shares $6.07 billion +10.1%N/A11.6 $51.37 4/15/2021107,270,000 shares $5.35 billion +8.8%N/A10 $49.84 3/31/202198,560,000 shares $4.93 billion +3.8%N/A9.2 $49.97 3/15/202194,940,000 shares $4.60 billion +10.0%N/A8 $48.42 2/26/202186,280,000 shares $4.22 billion +10.8%N/A6.9 $48.91 2/12/202177,900,000 shares $3.90 billion +18.2%N/A6.4 $50.09 1/29/202165,920,000 shares $3.43 billion +32.0%N/A5.9 $52.04 1/15/202149,930,000 shares $2.56 billion +49.1%N/A4.7 $51.29 11/30/20204,360,000 shares $229.38 million -30.7%N/A0.8 $52.61 11/15/20206,290,000 shares $360.92 million +4.0%N/A1.3 $57.38 10/30/20206,050,000 shares $308.97 million +20.3%N/A1.4 $51.07 10/15/20205,030,000 shares $267.55 million -1.4%N/A1.2 $53.19 9/30/20205,100,000 shares $279.48 million +18.3%N/A0.8 $54.80 9/15/20204,310,000 shares $238.26 million +4.4%N/A0.7 $55.28 8/31/20204,130,000 shares $231.28 million -37.2%N/A0.6 $56.00 AZN Short Interest - Frequently Asked Questions What is AstraZeneca's current short interest? Short interest is the volume of AstraZeneca shares that have been sold short but have not yet been closed out or covered. As of July 31st, investors have sold 5,330,000 shares of AZN short. 0.17% of AstraZeneca's shares are currently sold short. Learn More on AstraZeneca's current short interest. What is a good short interest ratio for AstraZeneca? 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. AZN shares currently have a short interest ratio of 1.0. Learn More on AstraZeneca's short interest ratio. Which institutional investors are shorting AstraZeneca? As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of AstraZeneca: Exome Asset Management LLC, LMR Partners LLP, Group One Trading LLC, Jane Street Group LLC, Quantinno Capital Management LP, Squarepoint Ops LLC, Qube Research & Technologies Ltd, Walleye Capital LLC, Walleye Trading LLC, Lido Advisors LLC, Arrowpoint Investment Partners Singapore Pte. Ltd., Simplex Trading LLC, and CenterStar Asset Management LLC. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission. What is a good short interest percentage for AstraZeneca? 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. 0.17% of AstraZeneca's floating shares are currently sold short. Is AstraZeneca's short interest increasing or decreasing? AstraZeneca saw a decrease in short interest in the month of July. As of July 31st, there was short interest totaling 5,330,000 shares, a decrease of 14.7% from the previous total of 6,250,000 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 AstraZeneca's short interest compare to its competitors? 0.17% of AstraZeneca's shares are currently sold short. Here is how the short interest of companies in the industry of "pharmaceutical products" compare to AstraZeneca: Novartis AG (0.23%), Novo Nordisk A/S (0.47%), Sanofi (0.13%), GSK PLC Sponsored ADR (0.62%), Takeda Pharmaceutical Co. (0.26%), argenex SE (3.15%), Insmed, Inc. (4.65%), BioNTech SE Sponsored ADR (2.56%), Teva Pharmaceutical Industries Ltd. (4.37%), Summit Therapeutics PLC (27.63%), 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 ($70.87 billion), Invesco QQQ ($30.12 billion), iShares Russell 2000 ETF ($19.85 billion), iShares 20+ Year Treasury Bond ETF ($10.34 billion), Strategy Inc ($8.98 billion), iShares iBoxx $ Investment Grade Corporate Bond ETF ($7.61 billion), SPDR S&P Biotech ETF ($6.81 billion), Invesco S&P 500 Equal Weight ETF ($6.14 billion), Palo Alto Networks, Inc. ($5.97 billion), and Super Micro Computer, Inc. ($5.28 billion). View all of the most shorted stocks. What does it mean to sell short AstraZeneca stock? Short selling AZN is an investing strategy that aims to generate trading profit from AstraZeneca as its price is falling. AZN shares are trading down $0.09 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 AstraZeneca? A short squeeze for AstraZeneca 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 AZN, which in turn drives the price of the stock up even further. How often is AstraZeneca'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 AZN, twice per month. The most recent reporting period available is July, 31 2025. More Short Interest Resources from MarketBeat Related Companies NVS Short Squeeze NVO Short Squeeze SNY Short Squeeze GSK Short Squeeze TAK Short Squeeze ARGX Short Squeeze INSM Short Squeeze BNTX Short Squeeze TEVA Short Squeeze SMMT Short Squeeze Short Interest Tools Stocks to Short Largest Short Interest Positions Short Interest Increases Short Interest Decreases Short Interest Reporting Dates This page (NASDAQ:AZN) was last updated on 8/31/2025 by MarketBeat.com Staff From Our PartnersINVESTOR ALERT: Tiny “$3 AI Wonder Stock” on the Verge of Blasting OffRight now, we’re witnessing a monumental shift in the world.Traders Agency | SponsoredBONUS GUIDE - Ben Stein Prepares For the Next Financial CrisisWith inflation high, debt soaring, and global tensions rising, a financial storm may be brewing. 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