Notice: This company has been marked as potentially delisted and may not be actively trading. Aileron Therapeutics (ALRN) Short Interest Ratio & Short Volume Add Compare Share Share Short Interest Stock AnalysisAnalyst ForecastsEarningsHeadlinesInsider TradesOwnershipShort InterestTrendsBuy This Stock Aileron Therapeutics Short Interest DataAileron Therapeutics (ALRN) has a short interest of 141,200 shares, representing 0.72% of the float (the number of shares available for trading by the public). This marks a 27.67% increase in short interest from the previous month. The short interest ratio (days to cover) is 1.5, indicating that it would take 1.5 days of the average trading volume of 91,432 shares to cover all short positions.Current Short Interest141,200 sharesPrevious Short Interest110,600 sharesChange Vs. Previous Month+27.67%Dollar Volume Sold Short$0.00Short Interest Ratio1.5 Days to CoverLast Record DateJanuary 15, 2025Outstanding Shares21,670,000 sharesFloat Size19,540,000 sharesShort Percent of Float0.72%Today's Trading Volume63,385 sharesAverage Trading Volume91,432 sharesToday's Volume Vs. Average69% Short Selling Aileron Therapeutics? Sign up to receive the latest short interest report for Aileron Therapeutics and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartALRN Short Interest Over TimeALRN Days to Cover Over TimeALRN Percentage of Float Shorted Over Time Remove Ads Aileron Therapeutics Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 1/15/2025141,200 shares $0.00 +27.7%0.7%1.5 $0.00 12/31/2024141,200 shares $324,760.00 +27.7%0.7%1.5 $2.30 12/15/2024110,600 shares $249,956.00 -38.1%0.6%1.3 $2.26 11/30/2024178,800 shares $511,368.00 -1.1%0.9%2.1 $2.86 11/15/2024180,700 shares $518,609.00 -22.6%0.9%2.3 $2.87 10/31/2024233,300 shares $961,196.00 -8.7%1.2%3.1 $4.12 10/15/2024255,600 shares $943,164.00 -14.2%1.3%3.9 $3.69 9/30/2024297,800 shares $1.05 million +15.8%1.5%4.5 $3.54 9/15/2024257,100 shares $704,454.00 -13.4%1.3%3.1 $2.74 8/31/2024296,800 shares $747,936.00 +5.0%1.5%4.4 $2.52 Get the Latest News and Ratings for ALRN and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Aileron Therapeutics and its competitors with MarketBeat's FREE daily newsletter. 8/15/2024282,800 shares $466,620.00 +4.4%1.5%4.1 $1.65 7/31/2024270,800 shares $595,760.00 -12.8%1.5%4.2 $2.20 7/15/2024310,600 shares $925,588.00 +13.8%1.7%3.5 $2.98 6/30/2024272,900 shares $755,933.00 +94.4%1.4%2.3 $2.77 6/15/2024140,400 shares $452,088.00 -41.3%0.7%1.3 $3.22 5/31/2024239,200 shares $765,440.00 -6.9%1.3%2.6 $3.20 5/15/2024256,900 shares $1.00 million +89.0%1.3%2.8 $3.90 4/30/2024135,900 shares $618,345.00 +213.1%1.0%1.6 $4.55 4/15/202443,400 shares $257,362.00 +23.0%0.3%0.7 $5.93 3/31/202435,300 shares $234,039.00 +7.0%0.9%0.9 $6.63 3/15/202433,000 shares $184,140.00 -12.9%0.8%0.8 $5.58 2/29/202437,900 shares $187,226.00 +21.5%1.2%0.4 $4.94 2/15/202431,200 shares $146,016.00 -22.6%0.8%0.3 $4.68 1/31/202440,300 shares $178,126.00 -16.2%1.0%0.3 $4.42 1/15/202448,100 shares $189,514.00 +11.6%1.3%0.4 $3.94 12/31/202343,100 shares $131,394.66 -25.6%1.2%0.4 $3.05 12/15/202357,900 shares $220,020.00 -25.1%1.6%0.5 $3.80 11/30/202377,300 shares $163,876.00 +0.1%2.2%1.5 $2.12 11/15/202377,200 shares $118,888.00 +1,879.5%2.2%1.7 $1.54 10/31/20233,900 shares $4,563.00 -13.3%0.1%0.1 $1.17 10/15/20234,500 shares $5,629.95 -47.1%0.1%0.4 $1.25 9/30/20238,500 shares $12,920.00 -10.5%0.3%0.5 $1.52 9/15/20239,500 shares $15,295.00 +50.8%0.3%0.5 $1.61 8/31/20236,300 shares $10,395.00 +40.0%0.2%0.3 $1.65 8/15/20234,500 shares $7,425.00 +1,025.0%0.1%0.2 $1.65 7/31/2023400 shares $684.00 -96.4%0.0%0 $1.71 7/15/202311,100 shares $21,534.00 -8.3%0.3%0.5 $1.94 6/30/202312,100 shares $21,659.00 +1,916.7%0.4%0.5 $1.79 6/15/2023600 shares $1,104.00 -97.9%0.0%0 $1.84 5/31/202328,100 shares $41,588.00 +55.3%0.9%0.9 $1.48Trump to unlock 15-figure fortune for America (May 3rd) ? (Ad)We were shown this map by former Presidential Advisor, Jim Rickards, one of the most politically connected men in America. Rickards has spent his fifty-year career in the innermost circles of the U.S. government and banking. And he believes Trump could soon release this frozen asset to the public. But something even more spectacular is bound to happen. And those who know what to expect could make 5/15/202318,100 shares $26,426.00 -50.8%0.6%0.3 $1.46 4/30/202336,800 shares $53,455.68 +43.2%1.1%0.7 $1.45 4/15/202325,700 shares $42,405.00 -27.6%0.8%0.5 $1.65 3/31/202335,500 shares $44,020.00 -21.5%1.1%0.7 $1.24 3/15/202345,200 shares $66,444.00 +370.8%1.4%0.8 $1.47 2/28/20239,600 shares $14,304.00 -68.0%0.3%0.2 $1.49 2/15/202330,000 shares $76,200.00 +50.0%0.9%0.7 $2.54 1/31/202320,000 shares $55,600.00 +30.7%0.5%0.6 $2.78 1/15/202315,300 shares $46,447.74 -21.5%0.4%0.5 $3.04 12/30/202219,500 shares $46,215.00 -65.4%0.5%0.6 $2.37 12/15/202256,400 shares $147,768.00 +56.2%1.4%2.5 $2.62 11/30/202236,100 shares $99,997.00 +193.5%0.9%0.8 $2.77 11/15/202212,300 shares $41,328.00 -96.2%0.3%0.3 $3.36 10/31/2022322,000 shares $64,400.00 +24.4%0.5%0.4 $0.20 10/15/2022258,900 shares $52,815.60 -25.7%0.4%0.2 $0.20 9/30/2022348,500 shares $72,034.95 +450.6%0.5%0.3 $0.21 9/15/202263,300 shares $17,724.00 -25.8%0.1%0.1 $0.28 8/31/202285,300 shares $15,789.03 -82.6%0.1%0.1 $0.19 8/15/2022489,600 shares $104,725.44 +164.8%0.8%0.6 $0.21 7/31/2022184,900 shares $35,149.49 +0.9%0.3%0.3 $0.19 7/15/2022183,300 shares $41,022.54 -37.8%0.3%0.5 $0.22 6/30/2022294,600 shares $76,596.00 -0.9%0.5%0.9 $0.26 6/15/2022297,200 shares $117,988.40 +50.6%0.5%0.8 $0.40 5/31/2022197,300 shares $83,319.79 -39.7%0.3%0.6 $0.42 5/15/2022326,900 shares $126,837.20 +112.8%0.5%0.9 $0.39 4/30/2022153,600 shares $67,891.20 -17.0%0.2%0.4 $0.44 4/15/2022185,100 shares $105,618.06 +27.5%0.3%0.5 $0.57 3/31/2022145,200 shares $74,342.40 -53.6%0.2%0.4 $0.51 3/15/2022313,100 shares $126,210.61 -13.0%0.5%1 $0.40 2/28/2022359,800 shares $153,490.68 -2.7%0.6%1 $0.43 2/15/2022369,900 shares $161,276.40 +14.8%0.6%1 $0.44 1/31/2022322,100 shares $150,098.60 +70.1%0.5%0.7 $0.47 1/15/2022189,400 shares $92,749.18 +1.9%0.3%0.4 $0.49 12/31/2021185,800 shares $104,586.82 -33.6%0.3%0.4 $0.56 12/15/2021279,900 shares $156,995.91 -54.0%0.4%0.6 $0.56 11/30/2021608,600 shares $375,445.34 -31.7%0.9%1.2 $0.62 11/15/2021890,400 shares $746,155.20 -26.4%1.4%1.5 $0.84 10/29/20211,210,000 shares $1.05 million +3.4%1.9%2 $0.87 10/15/20211,170,000 shares $1.18 million +0.9%1.8%2 $1.01 9/30/20211,160,000 shares $1.18 million -19.4%1.8%2 $1.02 9/15/20211,440,000 shares $1.66 million +16.1%2.3%2.5 $1.15 8/31/20211,240,000 shares $1.43 million +3.3%1.9%2.4 $1.15 8/13/20211,200,000 shares $1.28 million +1.7%1.9%2.7 $1.07 7/30/20211,180,000 shares $1.22 million +4.4%1.9%2.6 $1.03 7/15/20211,130,000 shares $1.21 million -3.4%1.8%2.2 $1.07 6/30/20211,170,000 shares $1.46 million -9.3%1.8%1.9 $1.25 6/15/20211,290,000 shares $1.66 million -4.4%2.0%1.7 $1.29 5/28/20211,350,000 shares $1.66 million -4.9%2.1%1.4 $1.23 5/14/20211,420,000 shares $1.51 million -5.3%N/A1.2 $1.06 4/30/20211,500,000 shares $1.85 million -17.6%N/A0.9 $1.23Trump to unlock 15-figure fortune for America (May 3rd) ? (Ad)We were shown this map by former Presidential Advisor, Jim Rickards, one of the most politically connected men in America. Rickards has spent his fifty-year career in the innermost circles of the U.S. government and banking. And he believes Trump could soon release this frozen asset to the public. But something even more spectacular is bound to happen. And those who know what to expect could make 4/15/20211,820,000 shares $2.35 million +8.3%N/A0.8 $1.29 3/31/20211,680,000 shares $2.30 million +26.3%N/A0.5 $1.37 3/15/20211,330,000 shares $2.17 million +17.7%N/A0.3 $1.63 2/26/20211,130,000 shares $1.77 million -8.1%N/A0.3 $1.57 2/12/20211,230,000 shares $2.44 million -3.2%N/A0.3 $1.98 1/29/20211,270,000 shares $2.21 million -28.3%N/A0.4 $1.74 1/15/20211,770,000 shares $3.45 million +13.5%N/A0.6 $1.95 12/31/20201,560,000 shares $1.70 million +32.2%N/A0.6 $1.09 12/15/20201,180,000 shares $1.11 million -6.4%N/A1.2 $0.94 11/30/20201,260,000 shares $1.37 million +17.8%N/A1.5 $1.09 11/15/20201,070,000 shares $1.12 million +3.9%N/A1.3 $1.05 10/30/20201,030,000 shares $1.30 million +8.9%N/A1.3 $1.26 10/15/2020946,200 shares $2.02 million +25.1%4.1%0.9 $2.14 9/30/2020756,500 shares $975,885.00 +5.7%2.9%0.9 $1.29 9/15/2020716,000 shares $937,960.00 -10.7%2.7%0.9 $1.31 8/31/2020802,100 shares $1.03 million +10.9%3.1%0.9 $1.28 8/14/2020723,300 shares $1.02 million +18.7%2.8%0.6 $1.41 7/31/2020609,600 shares $536,448.00 +3.3%2.4%0.5 $0.88 7/15/2020590,400 shares $566,784.00 -32.2%2.4%0.6 $0.96 6/30/2020870,900 shares $1.03 million -8.9%3.5%0.9 $1.18 6/15/2020955,800 shares $1.15 million +57.5%3.8%1 $1.20 5/29/2020606,700 shares $982,854.00 +6.2%2.4%0.7 $1.62 5/15/2020571,200 shares $387,273.60 +53.9%2.9%1.3 $0.68 4/30/2020371,100 shares $205,403.85 +201.2%2.0%1.2 $0.55 4/15/2020123,200 shares $77,443.52 +14.6%0.7%0.4 $0.63 3/31/2020107,500 shares $56,975.00 -45.9%0.6%0.4 $0.53 ALRN Short Interest - Frequently Asked Questions What is Aileron Therapeutics' current short interest? Short interest is the volume of Aileron Therapeutics shares that have been sold short but have not yet been covered or closed out. As of January 15th, investors have sold 141,200 shares of ALRN short. 0.72% of Aileron Therapeutics' shares are currently sold short. Learn More on Aileron Therapeutics' current short interest. What is a good short interest ratio for Aileron Therapeutics? 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. ALRN shares currently have a short interest ratio of 2.0. Learn More on Aileron Therapeutics's short interest ratio. What is a good short interest percentage for Aileron Therapeutics? 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. 0.72% of Aileron Therapeutics' floating shares are currently sold short. Is Aileron Therapeutics' short interest increasing or decreasing? Aileron Therapeutics saw a increase in short interest during the month of January. As of January 15th, there was short interest totaling 141,200 shares, an increase of 27.7% from the previous total of 110,600 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 Aileron Therapeutics' float size? Aileron Therapeutics currently has issued a total of 21,670,000 shares. Some of Aileron Therapeutics' 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. Aileron Therapeutics currently has a public float of 19,540,000 shares. How does Aileron Therapeutics' short interest compare to its competitors? 0.72% of Aileron Therapeutics' shares are currently sold short. Here is how the short interest of companies in the industry of "pharmaceutical products" compare to Aileron Therapeutics: 4D Molecular Therapeutics, Inc. (11.74%), MediWound Ltd. (12.02%), Genfit S.A. (0.11%), Acrivon Therapeutics, Inc. (3.38%), Fulcrum Therapeutics, Inc. (10.09%), RAPT Therapeutics, Inc. (8.18%), Protara Therapeutics, Inc. (9.86%), Puma Biotechnology, Inc. (7.18%), Nanobiotix S.A. (0.02%), Lyell Immunopharma, Inc. (4.78%), 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. ($4.18 billion), Charter Communications, Inc. ($3.91 billion), Reddit, Inc. ($3.16 billion), The Kroger Co. ($2.75 billion), International Paper ($2.57 billion), Cencora, Inc. ($2.06 billion), SoFi Technologies, Inc. ($2.06 billion), Rivian Automotive, Inc. ($2.00 billion), Live Nation Entertainment, Inc. ($1.63 billion), and Hims & Hers Health, Inc. ($1.57 billion). View all of the most shorted stocks. What does it mean to sell short Aileron Therapeutics stock? Short selling ALRN is an investing strategy that aims to generate trading profit from Aileron Therapeutics as its price is falling. 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 Aileron Therapeutics? A short squeeze for Aileron Therapeutics 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 ALRN, which in turn drives the price of the stock up even further. How often is Aileron Therapeutics' 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 ALRN, twice per month. The most recent reporting period available is January, 15 2025. More Short Interest Resources from MarketBeat Related Companies FDMT Short Interest Data MDWD Short Interest Data GNFT Short Interest Data ACRV Short Interest Data FULC Short Interest Data RAPT Short Interest Data TARA Short Interest Data PBYI Short Interest Data NBTX Short Interest Data LYEL Short Interest Data Short Interest Tools Stocks to Short Largest Short Interest Positions Short Interest Increases Short Interest Decreases Short Interest Reporting Dates This page (NASDAQ:ALRN) was last updated on 3/30/2025 by MarketBeat.com Staff From Our PartnersNew “Trump” currency proposed in DCAccording to one of the most connected men in Washington… A surprising new bill was just introduced in Wash...Paradigm Press | SponsoredThe Dirty Secret About Gold Mining Stocks...Here's something most gold analysts won't tell you: 90% of gold mining companies actually destroy sharehold...Golden Portfolio | SponsoredA market crash is coming—here’s whenThe stock market cycle I've used to identify the most likely day of the next market crash is the exact same in...Chaikin Analytics | SponsoredYour Wealth is Under AttackPlease don't wait—this is your moment to take action. 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