Amphastar Pharmaceuticals (AMPH) Short Interest Ratio & Short Volume $40.85 +0.01 (+0.02%) (As of 12/17/2024 ET) Add Compare Share Share Short Interest Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrends Amphastar Pharmaceuticals Short Interest DataAmphastar Pharmaceuticals (AMPH) has a short interest of 4.12 million shares, representing 11.51% of the float (the number of shares available for trading by the public). This marks a -2.83% decrease in short interest from the previous month. The short interest ratio (days to cover) is 11.0, indicating that it would take 11.0 days of the average trading volume of 403,368 shares to cover all short positions.Current Short Interest4,120,000 sharesPrevious Short Interest4,240,000 sharesChange Vs. Previous Month-2.83%Dollar Volume Sold Short$186.18 millionShort Interest Ratio11.0 Days to CoverLast Record DateNovember 30, 2024Outstanding Shares48,081,000 sharesFloat Size35,790,000 sharesShort Percent of Float11.51%Today's Trading Volume524,810 sharesAverage Trading Volume403,368 sharesToday's Volume Vs. Average130% Short Selling Amphastar Pharmaceuticals? Sign up to receive the latest short interest report for Amphastar Pharmaceuticals and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartAMPH Short Interest Over TimeAMPH Days to Cover Over TimeAMPH Percentage of Float Shorted Over Time Ad Porter & CompanyA conspiracy Trump won’t unsealNew documentary reveals the lost wealth-building secret hidden deep within ancient religious texts from almost every civilization… an investment one expert says is “so perfect that only God could have created it.” Watch it now to discover how this asset that you’ve likely never considered before can produce returns so safe, secure, and endless it is nothing short of miraculous.This is the untold, true story of God’s Investment. Amphastar Pharmaceuticals Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 11/30/20244,120,000 shares $186.18 million -2.8%11.5%11 $45.19 11/15/20244,240,000 shares $189.15 million -2.3%11.8%12 $44.61 10/31/20244,340,000 shares $219.30 million +2.6%12.2%12.6 $50.53 10/15/20244,230,000 shares $208.58 million -2.8%11.7%12 $49.31 9/30/20244,350,000 shares $211.11 million +5.3%12.0%11.9 $48.53 9/15/20244,130,000 shares $198.61 million -1.9%11.4%10.4 $48.09 Get the Latest News and Ratings for AMPH and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Amphastar Pharmaceuticals and its competitors with MarketBeat's FREE daily newsletter. 8/31/20244,210,000 shares $205.20 million No Change12.0%11.2 $48.74 8/15/20244,210,000 shares $190.80 million -7.5%12.0%10.9 $45.32 7/31/20244,550,000 shares $198.02 million +7.6%12.9%11.6 $43.52 7/15/20244,230,000 shares $163.95 million +1.4%12.0%11.7 $38.76 6/30/20244,170,000 shares $166.80 million +0.5%11.9%11.5 $40.00 6/15/20244,150,000 shares $168.03 million +10.4%11.8%12.1 $40.49 5/31/20243,760,000 shares $159.16 million -0.3%10.3%10.3 $42.33 5/15/20243,770,000 shares $160.00 million -5.5%10.7%9.2 $42.44 4/30/20243,990,000 shares $164.59 million +3.1%11.4%9.7 $41.25 4/15/20243,870,000 shares $157.82 million +5.5%11.0%9 $40.78 3/31/20243,670,000 shares $161.15 million +1.9%10.6%7.8 $43.91 3/15/20243,600,000 shares $154.98 million -3.2%10.4%7.5 $43.05 2/29/20243,720,000 shares $173.24 million +3.6%10.3%7.5 $46.57 2/15/20243,590,000 shares $199.28 million +12.5%10.0%7.9 $55.51 1/31/20243,190,000 shares $170.22 million +8.5%8.9%6.6 $53.36 1/15/20242,940,000 shares $159.38 million +5.8%8.2%6.5 $54.21 12/31/20232,780,000 shares $171.94 million -1.8%7.8%6.5 $61.85 12/15/20232,830,000 shares $160.18 million -0.7%8.0%6.9 $56.60 11/30/20232,850,000 shares $160.51 million -1.4%8.0%6 $56.32 11/15/20232,890,000 shares $166.23 million +15.6%8.1%6.4 $57.52 10/31/20232,500,000 shares $113.18 million -6.0%6.9%5.7 $45.27 10/15/20232,660,000 shares $121.72 million +1.5%7.3%6.2 $45.76 9/30/20232,620,000 shares $120.49 million -2.6%7.2%5.8 $45.99 9/15/20232,690,000 shares $123.12 million +106.9%7.4%5.9 $45.77 8/31/20231,300,000 shares $69.30 million -12.8%3.6%3 $53.31 8/15/20231,490,000 shares $85.30 million +4.2%4.1%3.4 $57.25 7/31/20231,430,000 shares $86.79 million -30.9%4.0%3.2 $60.69 7/15/20232,070,000 shares $115.65 million +3.0%5.8%4.5 $55.87 6/30/20232,010,000 shares $115.51 million -3.4%5.6%4.5 $57.47 6/15/20232,080,000 shares $108.64 million +10.6%5.8%4.7 $52.23 5/31/20231,880,000 shares $83.42 million -1.1%5.3%4.7 $44.37 5/15/20231,900,000 shares $79.34 million +2.2%5.3%4.8 $41.76 4/30/20231,860,000 shares $66.53 million +29.2%5.3%5.3 $35.77 4/15/20231,440,000 shares $60.70 million +9.9%4.1%4.5 $42.15How to piss off your liberal friends… and profit from it (Ad)Elon Musk has just exposed the “energy grift” of America in a recent tweet to his platform, X. And people are slowly starting to wake up to the Deep State’s lies.To get the full details on the fake “energy crisis” of America, watch this now 3/31/20231,310,000 shares $49.13 million -10.3%3.7%4.6 $37.50 3/15/20231,460,000 shares $53.79 million -16.6%4.1%5.7 $36.84 2/28/20231,750,000 shares $55.76 million +1.2%4.7%7.4 $31.86 2/15/20231,730,000 shares $56.33 million +0.6%4.6%8.3 $32.56 1/31/20231,720,000 shares $52.05 million +1.2%4.6%8.1 $30.26 1/15/20231,700,000 shares $49.23 million -1.2%4.6%7.9 $28.96 12/30/20221,720,000 shares $48.19 million -2.3%4.6%7.9 $28.02 12/15/20221,760,000 shares $50.65 million -0.6%4.8%7.9 $28.78 11/30/20221,770,000 shares $52.20 million -3.8%4.8%7.7 $29.49 11/15/20221,840,000 shares $52.20 million -5.2%5.0%7.5 $28.37 10/31/20221,940,000 shares $59.95 million +1.6%5.2%6.9 $30.90 10/15/20221,910,000 shares $54.49 million +1.1%5.1%6.6 $28.53 9/30/20221,890,000 shares $53.11 million -9.1%5.0%6.2 $28.10 9/15/20222,080,000 shares $61.01 million -5.0%5.6%6 $29.33 8/31/20222,190,000 shares $64.82 million +1.4%5.9%5.1 $29.60 8/15/20222,160,000 shares $70.26 million -5.7%5.8%4.2 $32.53 7/31/20222,290,000 shares $85.62 million -3.0%6.1%4.1 $37.39 7/15/20222,360,000 shares $87.41 million +2.6%6.3%4.2 $37.04 6/30/20222,300,000 shares $80.02 million -11.5%6.2%3.8 $34.79 6/15/20222,600,000 shares $81.43 million +11.1%7.0%4.3 $31.32 5/31/20222,340,000 shares $86.91 million -6.8%6.3%4.3 $37.14 5/15/20222,510,000 shares $88.70 million +6.8%6.8%5.1 $35.34 4/30/20222,350,000 shares $83.35 million +15.2%6.4%5 $35.47 4/15/20222,040,000 shares $84.74 million +4.6%5.5%4.4 $41.54 3/31/20221,950,000 shares $70.01 million -3.5%5.4%4.7 $35.90 3/15/20222,020,000 shares $70.17 million +1.5%5.5%5.5 $34.74 2/28/20221,990,000 shares $55.14 million -2.9%5.5%6.3 $27.71 2/15/20222,050,000 shares $54.12 million +5.7%5.6%7.2 $26.40 1/31/20221,940,000 shares $44.79 million -1.5%5.6%7.1 $23.09 1/15/20221,970,000 shares $49.98 million -2.0%5.7%9.2 $25.37 12/31/20212,010,000 shares $46.81 million -2.9%5.8%10 $23.29 12/15/20212,070,000 shares $46.26 million -2.4%6.0%11.3 $22.35 11/30/20212,120,000 shares $41.47 million +7.1%6.1%12.5 $19.56 11/15/20211,980,000 shares $41.88 million -14.3%5.7%11.9 $21.15 10/29/20212,310,000 shares $43.15 million +1.3%6.6%16.3 $18.68 10/15/20212,280,000 shares $43.57 million No Change6.5%15.2 $19.11 9/30/20212,280,000 shares $43.34 million -5.8%6.5%14.1 $19.01 9/15/20212,420,000 shares $43.27 million +0.8%6.9%12.5 $17.88 8/31/20212,400,000 shares $47.09 million +3.0%6.9%11 $19.62 8/13/20212,330,000 shares $45.67 million -2.5%6.7%10.5 $19.60 7/30/20212,390,000 shares $50.07 million -1.2%6.9%10.2 $20.95 7/15/20212,420,000 shares $48.45 million -0.8%7.0%11 $20.02 6/30/20212,440,000 shares $49.19 million -7.9%7.1%11.1 $20.16 6/15/20212,650,000 shares $52.95 million +1.9%7.7%14.4 $19.98 5/28/20212,600,000 shares $49.19 million No Change7.5%15.4 $18.92 5/14/20212,600,000 shares $50.86 million -1.1%7.5%13.4 $19.56 4/30/20212,630,000 shares $46.21 million +3.5%7.6%13.7 $17.57 4/15/20212,540,000 shares $44.20 million +2.8%7.3%13.5 $17.40 3/31/20212,470,000 shares $44.46 million +2.9%7.3%12.6 $18.00 3/15/20212,400,000 shares $46.46 million -6.6%7.1%11.2 $19.36How to piss off your liberal friends… and profit from it (Ad)Elon Musk has just exposed the “energy grift” of America in a recent tweet to his platform, X. And people are slowly starting to wake up to the Deep State’s lies.To get the full details on the fake “energy crisis” of America, watch this now 2/26/20212,570,000 shares $45.98 million +0.8%7.5%12 $17.89 2/12/20212,550,000 shares $48.81 million -1.9%7.5%13.1 $19.14 1/29/20212,600,000 shares $48.28 million +1.6%7.3%12.8 $18.57 1/15/20212,560,000 shares $49.31 million -4.1%7.1%12.6 $19.26 12/31/20202,670,000 shares $53.00 million +3.5%7.5%13.6 $19.85 12/15/20202,580,000 shares $48.63 million -3.4%7.2%13.5 $18.85 11/30/20202,670,000 shares $48.38 million -0.7%7.5%13.8 $18.12 11/15/20202,690,000 shares $52.11 million No Change7.5%14.3 $19.37 10/30/20202,690,000 shares $54.04 million -2.2%7.5%15.1 $20.09 10/15/20202,750,000 shares $57.37 million +2.6%7.7%14.1 $20.86 9/30/20202,680,000 shares $50.25 million +7.2%7.5%12.2 $18.75 9/15/20202,500,000 shares $48.75 million -1.2%7.0%10.6 $19.50 8/31/20202,530,000 shares $51.56 million +0.8%7.1%9.9 $20.38 8/14/20202,510,000 shares $51.05 million -6.3%7.1%8.6 $20.34 7/31/20202,680,000 shares $53.65 million +1.9%7.8%7.8 $20.02 7/15/20202,630,000 shares $53.31 million -6.7%7.6%7.6 $20.27 6/30/20202,820,000 shares $62.38 million -8.1%8.2%8.2 $22.12 6/15/20203,070,000 shares $61.22 million -4.1%8.9%9.1 $19.94 5/29/20203,200,000 shares $59.65 million No Change9.2%9.4 $18.64 5/15/20203,200,000 shares $58.18 million -1.2%9.3%9.7 $18.18 4/30/20203,240,000 shares $54.92 million +8.4%9.3%12 $16.95 4/15/20202,990,000 shares $49.10 million +3.5%8.6%11.6 $16.42 3/31/20202,890,000 shares $48.35 million -1.9%8.3%11.4 $16.73 3/13/20202,944,500 shares $48.53 million +4.4%8.7%9.4 $16.48 2/28/20202,820,000 shares $37.20 million +4.8%8.3%12.8 $13.19 2/14/20202,690,000 shares $41.40 million -1.1%7.5%12.5 $15.39 1/31/20202,720,000 shares $47.00 million No Change7.7%12 $17.28 1/15/20202,720,000 shares $54.32 million +0.7%7.7%11.7 $19.97 12/31/20192,700,000 shares $53.03 million -5.6%7.6%11.9 $19.64 AMPH Short Interest - Frequently Asked Questions What is Amphastar Pharmaceuticals' current short interest? Short interest is the volume of Amphastar Pharmaceuticals shares that have been sold short but have not yet been closed out or covered. As of November 30th, traders have sold 4,120,000 shares of AMPH short. 11.51% of Amphastar Pharmaceuticals' shares are currently sold short. Learn More on Amphastar Pharmaceuticals' current short interest. What is a good short interest ratio for Amphastar Pharmaceuticals? 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. AMPH shares currently have a short interest ratio of 11.0. Learn More on Amphastar Pharmaceuticals's short interest ratio. Which institutional investors are shorting Amphastar Pharmaceuticals? As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of Amphastar Pharmaceuticals: Concourse Financial Group Securities Inc.. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission. What is a good short interest percentage for Amphastar Pharmaceuticals? 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. 11.51% of Amphastar Pharmaceuticals' floating shares are currently sold short. Is Amphastar Pharmaceuticals' short interest increasing or decreasing? Amphastar Pharmaceuticals saw a drop in short interest in the month of November. As of November 30th, there was short interest totaling 4,120,000 shares, a drop of 2.8% from the previous total of 4,240,000 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. What is Amphastar Pharmaceuticals' float size? Amphastar Pharmaceuticals currently has issued a total of 48,081,000 shares. Some of Amphastar Pharmaceuticals' outstanding shares are available for trading, while others are subject to various restrictions. The public float, also referred to as floating shares or "the float", are shares that publicly owned, unrestricted and available to trade on the open market. Amphastar Pharmaceuticals currently has a public float of 35,790,000 shares. How does Amphastar Pharmaceuticals' short interest compare to its competitors? 11.51% of Amphastar Pharmaceuticals' shares are currently sold short. Here is how the short interest of companies in the industry of "pharmaceutical products" compare to Amphastar Pharmaceuticals: Revolution Medicines, Inc. (9.61%), Ascendis Pharma A/S (6.22%), Legend Biotech Co. (13.04%), Nuvalent, Inc. (12.26%), Lantheus Holdings, Inc. (6.73%), Elanco Animal Health Incorporated (3.15%), Blueprint Medicines Co. (6.60%), Cytokinetics, Incorporated (12.35%), Viking Therapeutics, Inc. (16.22%), BridgeBio Pharma, Inc. (11.52%), Which stocks are the most shorted right now? As of the most recent reporting period, the following stocks had the largest short interest positions: AppLovin Co. ($5.70 billion), Charter Communications, Inc. ($4.55 billion), Spotify Technology S.A. ($3.84 billion), Royal Caribbean Cruises Ltd. ($3.07 billion), International Paper ($3.00 billion), Coinbase Global, Inc. ($2.93 billion), Cencora, Inc. ($2.54 billion), Paychex, Inc. ($2.53 billion), SoFi Technologies, Inc. ($2.24 billion), and Reddit, Inc. ($2.00 billion). View all of the most shorted stocks. What does it mean to sell short Amphastar Pharmaceuticals stock? Short selling AMPH is an investing strategy that aims to generate trading profit from Amphastar Pharmaceuticals as its price is falling. AMPH shares are trading up $0.01 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 Amphastar Pharmaceuticals? A short squeeze for Amphastar 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 AMPH, which in turn drives the price of the stock up even further. How often is Amphastar Pharmaceuticals' 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 AMPH, twice per month. The most recent reporting period available is November, 30 2024. More Short Interest Resources from MarketBeat Related Companies Revolution Medicines Short Squeeze Ascendis Pharma A/S Short Squeeze Legend Biotech Short Squeeze Nuvalent Short Squeeze Lantheus Short Squeeze Elanco Animal Health Short Squeeze Blueprint Medicines Short Squeeze Cytokinetics Short Squeeze Viking Therapeutics Short Squeeze BridgeBio Pharma 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:AMPH) was last updated on 12/18/2024 by MarketBeat.com Staff From Our PartnersTrump’s Secret Manhattan ProjectOn January 20, a whole new Manhattan Project is set to begin: Trump’s Manhattan Project. 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