Aptose Biosciences (APTO) Short Interest Ratio & Short Volume $0.21 -0.01 (-4.04%) As of 04:00 PM Eastern Add Compare Share Share Short Interest Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOwnershipSEC FilingsShort InterestTrends Aptose Biosciences Short Interest DataAptose Biosciences (APTO) has a short interest of 2.09 million shares, representing 3.70% of the float (the number of shares available for trading by the public). This marks a 1,012.89% increase in short interest from the previous month. The short interest ratio (days to cover) is 0.3, indicating that it would take 0.3 days of the average trading volume of 862,721 shares to cover all short positions.Current Short Interest2,090,000 sharesPrevious Short Interest187,800 sharesChange Vs. Previous Month+1,012.89%Dollar Volume Sold Short$470,877.00Short Interest Ratio0.3 Days to CoverLast Record DateDecember 31, 2024Outstanding Shares60,180,000 sharesFloat Size56,470,000 sharesShort Percent of Float3.70%Today's Trading Volume384,411 sharesAverage Trading Volume862,721 sharesToday's Volume Vs. Average45% Short Selling Aptose Biosciences? Sign up to receive the latest short interest report for Aptose Biosciences and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartAPTO Short Interest Over TimeAPTO Days to Cover Over TimeAPTO Percentage of Float Shorted Over Time Aptose Biosciences Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 12/31/20242,090,000 shares $470,877.00 +1,012.9%3.7%0.3 $0.23 12/15/2024187,800 shares $36,245.40 +84.5%0.3%0 $0.19 11/30/2024101,800 shares $18,324.00 -15.7%0.2%0.2 $0.18 11/15/2024120,700 shares $44,049.34 -2.0%0.8%0.2 $0.36 10/31/2024123,200 shares $46,902.24 -36.1%0.8%0.2 $0.38 10/15/2024192,700 shares $71,106.30 -6.4%1.3%0.4 $0.37 9/30/2024205,900 shares $84,604.31 -74.9%1.4%0.4 $0.41 9/15/2024818,700 shares $305,948.19 +520.2%5.5%1.5 $0.37 8/31/2024132,000 shares $53,592.00 +167.2%0.9%0.3 $0.41 8/15/202449,400 shares $23,870.08 -45.8%0.3%0.6 $0.48 Get the Latest News and Ratings for APTO and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Aptose Biosciences and its competitors with MarketBeat's FREE daily newsletter. 7/31/202491,200 shares $52,713.60 +12.9%0.6%1.2 $0.58 7/15/202480,800 shares $56,802.40 -13.1%0.5%1.2 $0.70 6/30/202493,000 shares $70,587.00 -17.6%0.6%1.6 $0.76 6/15/2024112,800 shares $100,392.00 +46.5%0.8%1.6 $0.89 5/31/202477,000 shares $75,075.00 +13.1%0.5%1.2 $0.98 5/15/202468,100 shares $82,401.00 -18.4%0.7%1 $1.21 4/30/202483,500 shares $100,200.00 +52.1%0.9%1.1 $1.20 4/15/202454,900 shares $71,370.00 -35.9%0.6%0.6 $1.30 3/31/202485,600 shares $142,096.00 +70.5%0.9%0.9 $1.66 3/15/202450,200 shares $76,304.00 -28.7%0.5%0.5 $1.52 2/29/202470,400 shares $126,720.00 -22.3%0.8%0.8 $1.80 2/15/202490,600 shares $183,265.68 -53.0%1.0%1 $2.02 1/31/2024192,600 shares $385,200.00 +31.9%6.2%2.5 $2.00 1/15/2024146,000 shares $332,880.00 +66.5%4.0%2.6 $2.28 12/31/202387,700 shares $222,758.00 +32.3%2.4%1.6 $2.54 12/15/202366,300 shares $157,131.00 +193.4%1.8%1.3 $2.37 11/30/202322,600 shares $54,918.00 -25.9%0.7%0.5 $2.43 11/15/202330,500 shares $82,655.00 -27.2%1.0%0.8 $2.71 10/31/202341,900 shares $116,901.00 +37.8%1.7%1 $2.79 10/15/202330,400 shares $65,056.00 -24.4%1.2%0.7 $2.14 9/30/202340,200 shares $112,560.00 +37.7%1.8%1 $2.80 9/15/202329,200 shares $96,068.00 -22.8%1.3%0.7 $3.29 8/31/202337,800 shares $153,090.00 -7.1%1.8%0.8 $4.05 8/15/202340,700 shares $199,430.00 -12.9%1.3%0.9 $4.90 7/31/202346,700 shares $144,770.00 -28.4%2.2%1.1 $3.10 7/15/202365,200 shares $288,836.00 -18.2%3.1%1.8 $4.43 6/30/202379,700 shares $369,808.00 -3.4%1.4%2.5 $4.64 6/15/202382,500 shares $485,925.00 +167.0%1.4%2.9 $5.89 5/31/202330,900 shares $190,035.00 -88.3%N/A1.6 $6.15 5/15/2023264,100 shares $124,655.20 +44.6%0.3%1.5 $0.47Now that Trump’s be inaugurated, this day will be key (mark your calendar) (Ad)Mark your calendar for January 29th. Because on that day, I believe we could see a $2 Trillion shock INTO the market… Unleashing more explosive moves than ever before.So please watch this video now before the hammer falls and it’s too late. 4/30/2023182,700 shares $88,189.29 +11.3%0.2%1.1 $0.48 4/15/2023164,100 shares $84,027.41 -37.4%0.2%0.9 $0.51 3/31/2023262,200 shares $167,808.00 +53.3%0.3%1.4 $0.64 3/15/2023171,000 shares $99,180.00 -3.0%0.2%0.8 $0.58 2/28/2023176,200 shares $102,548.40 +0.7%0.2%0.6 $0.58 2/15/2023175,000 shares $119,000.00 -13.9%0.2%0.6 $0.68 1/31/2023203,300 shares $152,475.00 -74.0%0.2%0.7 $0.75 1/15/2023782,400 shares $547,680.00 -19.6%0.9%1.8 $0.70 12/30/2022973,500 shares $564,630.00 -3.6%N/A2.3 $0.58 12/15/20221,010,000 shares $591,153.00 +29.1%N/A2.5 $0.59 11/30/2022782,300 shares $520,229.50 +13.0%N/A2.2 $0.67 11/15/2022692,100 shares $472,289.04 +163.7%N/A1.9 $0.68 10/31/2022262,500 shares $120,881.25 -4.0%N/A0.7 $0.46 10/15/2022273,300 shares $155,808.33 +14.6%N/A1.3 $0.57 9/30/2022238,400 shares $141,848.00 -2.9%N/A1.3 $0.60 9/15/2022245,600 shares $170,937.60 +18.7%N/A1.3 $0.70 8/31/2022206,900 shares $161,795.80 -15.9%N/A1 $0.78 8/15/2022245,900 shares $213,933.00 -16.7%N/A1.1 $0.87 7/31/2022295,100 shares $218,993.71 +10.5%N/A1.1 $0.74 7/15/2022267,100 shares $223,055.21 +4.8%N/A0.9 $0.84 6/30/2022255,000 shares $189,235.50 -38.2%N/A0.7 $0.74 6/15/2022412,300 shares $349,671.63 -16.3%N/A1 $0.85 5/31/2022492,500 shares $497,425.00 +0.4%0.6%1.2 $1.01 5/15/2022490,800 shares $510,432.00 +5.0%0.6%1.2 $1.04 4/30/2022467,500 shares $556,325.00 +5.9%0.6%1.1 $1.19 4/15/2022441,500 shares $551,875.00 +3.8%0.5%1.1 $1.25 3/31/2022425,400 shares $578,544.00 -4.8%0.5%1 $1.36 3/15/2022446,600 shares $473,396.00 -21.7%0.6%0.9 $1.06 2/28/2022570,400 shares $684,480.00 +2.8%0.7%0.6 $1.20 2/15/2022554,900 shares $682,527.00 -5.7%0.7%0.6 $1.23 1/31/2022588,200 shares $764,660.00 -3.8%0.7%0.5 $1.30 1/15/2022611,700 shares $819,678.00 -4.2%0.8%0.5 $1.34 12/31/2021638,400 shares $861,840.00 -11.7%0.8%0.5 $1.35 12/15/2021722,700 shares $860,013.00 -2.9%0.9%0.6 $1.19 11/30/2021744,300 shares $1.64 million -16.3%0.9%0.9 $2.20 11/15/2021889,100 shares $2.29 million -5.2%1.1%1 $2.58 10/29/2021937,600 shares $1.92 million +2.4%1.2%1 $2.05 10/15/2021916,100 shares $2.11 million +16.6%1.2%1 $2.30 9/30/2021785,600 shares $1.71 million -16.7%1.0%0.8 $2.18 9/15/2021942,600 shares $2.55 million -7.6%1.2%0.9 $2.71 8/31/20211,020,000 shares $3.05 million -12.8%1.3%0.7 $2.99 8/13/20211,170,000 shares $3.08 million -7.9%1.5%0.9 $2.63 7/30/20211,270,000 shares $3.42 million -24.4%1.7%1 $2.69 7/15/20211,680,000 shares $4.80 million -42.3%2.0%1.4 $2.86 6/30/20212,910,000 shares $9.66 million -4.0%3.5%2.4 $3.32 6/15/20213,030,000 shares $10.61 million -1.3%3.7%0.7 $3.50 5/28/20213,070,000 shares $16.27 million -1.3%3.7%0.8 $5.30 5/14/20213,110,000 shares $14.37 million -7.4%3.8%0.8 $4.62 4/30/20213,360,000 shares $18.92 million -8.9%4.1%0.8 $5.63 4/15/20213,690,000 shares $19.22 million -23.1%4.5%0.9 $5.21Now that Trump’s be inaugurated, this day will be key (mark your calendar) (Ad)Mark your calendar for January 29th. Because on that day, I believe we could see a $2 Trillion shock INTO the market… Unleashing more explosive moves than ever before.So please watch this video now before the hammer falls and it’s too late. 3/31/20214,800,000 shares $29.86 million +98.4%5.9%1.1 $6.22 3/15/20212,420,000 shares $9.56 million +8.0%3.0%0.6 $3.95 2/26/20212,240,000 shares $8.92 million +1.8%2.7%1.5 $3.98 2/12/20212,200,000 shares $10.23 million -26.7%2.7%1.5 $4.65 1/29/20213,000,000 shares $12.75 million -11.8%3.6%1.9 $4.25 1/15/20213,400,000 shares $14.93 million -24.8%4.0%2.1 $4.39 12/31/20204,520,000 shares $19.26 million -3.8%5.4%2.8 $4.26 12/15/20204,700,000 shares $18.99 million +49.2%5.6%3.1 $4.04 11/30/20203,150,000 shares $19.78 million +38.2%3.8%2.3 $6.28 11/15/20202,280,000 shares $12.22 million +7.6%2.7%2.3 $5.36 10/30/20202,120,000 shares $9.75 million +12.8%2.6%2.5 $4.60 10/15/20201,880,000 shares $11.05 million -25.7%2.3%2.1 $5.88 9/30/20202,530,000 shares $15.18 million +5.0%3.1%2.6 $6.00 9/15/20202,410,000 shares $14.24 million +24.9%2.9%2.5 $5.91 8/31/20201,930,000 shares $10.81 million -5.9%2.3%2 $5.60 8/14/20202,050,000 shares $10.50 million -5.5%2.5%2.5 $5.12 7/31/20202,170,000 shares $10.98 million +22.6%2.7%2.5 $5.06 7/15/20201,770,000 shares $10.05 million +9.9%2.2%2 $5.68 6/30/20201,610,000 shares $10.16 million -13.4%2.3%2.1 $6.31 6/15/20201,860,000 shares $12.74 million +2.2%2.6%2.4 $6.85 5/29/20201,820,000 shares $13.43 million -8.1%2.6%2.1 $7.38 5/15/20201,980,000 shares $15.58 million +99.7%2.8%2.1 $7.87 4/30/2020991,600 shares $6.85 million +59.6%1.4%1 $6.91 4/15/2020621,300 shares $4.86 million +29.6%0.9%0.6 $7.83 3/31/2020479,500 shares $3.94 million +30.5%0.7%0.5 $8.22 3/13/2020367,400 shares $2.31 million -5.8%0.5%0.4 $6.28 2/28/2020389,800 shares $2.05 million -5.2%0.6%0.3 $5.27 2/14/2020411,000 shares $2.91 million +13.8%0.6%0.3 $7.08 1/31/2020361,300 shares $2.79 million -16.4%0.5%0.3 $7.73 APTO Short Interest - Frequently Asked Questions What is Aptose Biosciences' current short interest? Short interest is the volume of Aptose Biosciences shares that have been sold short but have not yet been closed out or covered. As of December 31st, investors have sold 2,090,000 shares of APTO short. 3.70% of Aptose Biosciences' shares are currently sold short. Learn More on Aptose Biosciences' current short interest. What is a good short interest percentage for Aptose Biosciences? 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. 3.70% of Aptose Biosciences' floating shares are currently sold short. Is Aptose Biosciences' short interest increasing or decreasing? Aptose Biosciences saw a increase in short interest in the month of December. As of December 31st, there was short interest totaling 2,090,000 shares, an increase of 1,012.9% from the previous total of 187,800 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 Aptose Biosciences' float size? Aptose Biosciences currently has issued a total of 60,180,000 shares. Some of Aptose Biosciences' 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. Aptose Biosciences currently has a public float of 56,470,000 shares. How does Aptose Biosciences' short interest compare to its competitors? 3.70% of Aptose Biosciences' shares are currently sold short. Here is how the short interest of companies in the industry of "biological products, except diagnostic" compare to Aptose Biosciences: Elevation Oncology, Inc. (12.38%), Dyadic International, Inc. (0.60%), Invivyd, Inc. (5.30%), Achilles Therapeutics plc (0.32%), AlloVir, Inc. (25.05%), Precision BioSciences, Inc. (8.22%), Estrella Immunopharma, Inc. (0.12%), Passage Bio, Inc. (7.47%), Surrozen, Inc. (1.94%), OKYO Pharma Limited (0.88%), 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. ($5.83 billion), Charter Communications, Inc. ($3.77 billion), Reddit, Inc. ($2.98 billion), The Kroger Co. ($2.97 billion), International Paper ($2.64 billion), SoFi Technologies, Inc. ($1.99 billion), Rivian Automotive, Inc. ($1.93 billion), Onsemi ($1.81 billion), SoundHound AI, Inc. ($1.59 billion), and Moderna, Inc. ($1.57 billion). View all of the most shorted stocks. What does it mean to sell short Aptose Biosciences stock? Short selling APTO is an investing strategy that aims to generate trading profit from Aptose Biosciences as its price is falling. APTO shares are trading down $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 Aptose Biosciences? A short squeeze for Aptose Biosciences 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 APTO, which in turn drives the price of the stock up even further. How often is Aptose Biosciences' 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 APTO, twice per month. The most recent reporting period available is December, 31 2024. More Short Interest Resources from MarketBeat Related Companies Elevation Oncology Short Interest Data Dyadic International Short Interest Data Invivyd Short Interest Data Achilles Therapeutics Short Interest Data AlloVir Short Interest Data Precision BioSciences Short Interest Data Estrella Immunopharma Short Interest Data Passage Bio Short Interest Data Surrozen Short Interest Data OKYO Pharma 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:APTO) was last updated on 1/22/2025 by MarketBeat.com Staff From Our PartnersURGENT: This Altcoin Opportunity Won’t Wait – Act NowCrypto has officially entered the "banana zone" – that wild phase where prices can 1000x in days. 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