Aptose Biosciences (APTO) Short Interest Ratio & Short Volume $3.32 -0.38 (-10.27%) As of 03/28/2025 04:00 PM Eastern Add Compare Share Share Short Interest Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOwnershipSEC FilingsShort InterestTrendsBuy This Stock Aptose Biosciences Short Interest DataAptose Biosciences (APTO) has a short interest of 53,200 shares, representing 3.30% of the float (the number of shares available for trading by the public). This marks a -56.61% decrease in short interest from the previous month. The short interest ratio (days to cover) is 0.1, indicating that it would take 0.1 days of the average trading volume of 224,192 shares to cover all short positions.Current Short Interest53,200 sharesPrevious Short Interest122,600 sharesChange Vs. Previous Month-56.61%Dollar Volume Sold Short$196,308.00Short Interest Ratio0.1 Days to CoverLast Record DateMarch 15, 2025Outstanding Shares2,141,000 sharesFloat Size1,610,000 sharesShort Percent of Float3.30%Today's Trading Volume32,583 sharesAverage Trading Volume224,192 sharesToday's Volume Vs. Average15% 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 Remove Ads 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 3/15/202553,200 shares $196,308.00 -56.6%3.3%0.1 $3.69 2/28/2025122,600 shares $391,094.00 +63.7%6.1%0.3 $3.19 2/15/202574,900 shares $404,460.00 -92.5%3.7%0.2 $5.40 1/31/2025993,200 shares $174,803.20 -24.2%1.8%0.2 $0.18 1/15/20251,310,000 shares $269,991.00 -37.3%2.3%0.2 $0.21 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 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. 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 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 $3.10Trump’s betrayal exposed (Ad)Trump’s Final Reset Inside the shocking plot to re-engineer America’s financial system…and why you need to move your money now.Millions of Americans are about to be wiped out, while others could make a fortune… click here to ma 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 $0.47 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 $3.32Trump’s betrayal exposed (Ad)Trump’s Final Reset Inside the shocking plot to re-engineer America’s financial system…and why you need to move your money now.Millions of Americans are about to be wiped out, while others could make a fortune… click here to ma 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 $5.21 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 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 covered or closed out. As of March 15th, traders have sold 53,200 shares of APTO short. 3.30% of Aptose Biosciences' shares are currently sold short. Learn More on Aptose Biosciences' current short interest. Which institutional investors are shorting Aptose Biosciences? As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of Aptose Biosciences: 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 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. 3.30% of Aptose Biosciences' floating shares are currently sold short. Is Aptose Biosciences' short interest increasing or decreasing? Aptose Biosciences saw a decrease in short interest during the month of March. As of March 15th, there was short interest totaling 53,200 shares, a decrease of 56.6% from the previous total of 122,600 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 Aptose Biosciences' float size? Aptose Biosciences currently has issued a total of 2,141,000 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 1,610,000 shares. How does Aptose Biosciences' short interest compare to its competitors? 3.30% 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: Cyclo Therapeutics, Inc. (3.55%), Curis, Inc. (1.93%), Cognition Therapeutics, Inc. (2.83%), IN8bio, Inc. (2.58%), Senti Biosciences, Inc. (0.35%), BioAtla, Inc. (9.86%), Elevation Oncology, Inc. (16.81%), SAB Biotherapeutics, Inc. (1.55%), Athira Pharma, Inc. (2.91%), BioCardia, Inc. (1.38%), Which stocks are the most shorted right now? As of the most recent reporting period, the following stocks had the largest short interest positions: Invesco QQQ ($26.28 billion), iShares 20+ Year Treasury Bond ETF ($9.53 billion), MicroStrategy Incorporated ($8.50 billion), Apollo Global Management, Inc. ($4.86 billion), Super Micro Computer, Inc. ($4.85 billion), Charter Communications, Inc. ($4.28 billion), Capital One Financial Co. ($4.08 billion), AppLovin Co. ($3.82 billion), Canadian Natural Resources Limited ($3.78 billion), and Schlumberger Limited ($2.87 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 $0.38 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 March, 15 2025. More Short Interest Resources from MarketBeat Related Companies Cyclo Therapeutics Short Interest Data Curis Short Interest Data Cognition Therapeutics Short Interest Data IN8bio Short Interest Data Senti Biosciences Short Interest Data BioAtla Short Interest Data Elevation Oncology Short Interest Data SAB Biotherapeutics Short Interest Data Athira Pharma Short Interest Data BioCardia 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 3/30/2025 by MarketBeat.com Staff From Our PartnersTrump Treasure April 19Thanks to President Trump… A $900 investment across5 specific cryptos… Could gain 12,000% so quickly tha...Paradigm Press | 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. Download your Wealth Protection Guide now, claim your fr...American Alternative | 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 | SponsoredAI Boom Takes a Shocking Turn…A potentially historic moment for retirement Let's make the most of this market together. Crypto 101 Media | Sponsored$2 Trillion Disappears Because of Fed's Secretive New Move$2 trillion has disappeared from the US government's books. The reason why is a new, secretive move being c...Stansberry Research | SponsoredCollect $7k per month from Tesla’s SECRET dividendTesla doesn't pay a traditional dividend.... But I just discovered a secret backdoor to collect a secret 69...Investors Alley | SponsoredHuge Elon-backed AI rollout begins – buy these nine stocksIf you suspect Elon Musk has an ulterior motive for coming to Washington, D.C.... You're 100% correct. ...Altimetry | Sponsored Adding Choose a watchlist: Watchlist Adding You have already added five stocks to your watchlist. Upgrade to MarketBeat All Access to add more stocks to your watchlist. Adding Aptose Biosciences Inc. Please log in to your account or sign up in order to add this asset to your watchlist. Share Aptose Biosciences With A Colleague Link copied to clipboard. Get 30 Days of MarketBeat All Access for Free Sign up for MarketBeat All Access to gain access to MarketBeat's full suite of research tools. Start Your 30-Day Trial MarketBeat All Access Features Best-in-Class Portfolio Monitoring Get personalized stock ideas. Compare portfolio to indices. Check stock news, ratings, SEC filings, and more. Stock Ideas and Recommendations See daily stock ideas from top analysts. Receive short-term trading ideas from MarketBeat. Identify trending stocks on social media. Advanced Stock Screeners and Research Tools Use our seven stock screeners to find suitable stocks. Stay informed with MarketBeat's real-time news. Export data to Excel for personal analysis. Sign in to your free account to enjoy these benefits In-depth profiles and analysis for 20,000 public companies. Real-time analyst ratings, insider transactions, earnings data, and more. Our daily ratings and market update email newsletter. Sign in to your free account to enjoy all that MarketBeat has to offer. Sign In Create Account Your Email Address: Email Address Required Your Password: Password Required Log In or Sign in with Facebook Sign in with Google Forgot your password? Your Email Address: Please enter your email address. Please enter a valid email address Choose a Password: Please enter your password. Your password must be at least 8 characters long and contain at least 1 number, 1 letter, and 1 special character. Create My Account (Free) or Sign in with Facebook Sign in with Google By creating a free account, you agree to our terms of service. This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Buy APTO Stock Free APTO Stock Alerts