Aptose Biosciences (APS) Stock Chart & Stock Price History C$1.65 +0.01 (+0.61%) As of 09/5/2025 04:00 PM Eastern Add Compare Share Share Chart Stock AnalysisAnalyst ForecastsChartCompetitorsFDA EventsHeadlinesBuy This Stock Aptose Biosciences Stock Price Performance The Aptose Biosciences (APS) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has decreased 89.42%, with a year-to-date return of -83.08%. In the past month, the stock has decreased 4.62%, reflecting recent market activity. As of the latest close, Aptose Biosciences traded at C$1.65 with a market cap of C$4.21 million and volume of 4,385 shares. Five years ago, the stock traded at a split-adjusted price of C$214.80, representing a 99.23% decrease over that period. At the time, it had a market cap of C$623.76 million and a volume of 1,074 shares. 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Read our full terms of service and privacy policy. 5 Day Performance-2.37%1 Month Performance-4.62%3 Month Performance-32.65%Year-To-Date Performance-83.08%1 Year Performance-89.42%5 Year Performance-99.23% APS Stock Chart for Saturday, September, 6, 2025 APS Chart by TradingView Aptose Biosciences Stock Price History Daily Weekly Monthly Yearly Time Frame Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year 3 Year 5 Year Time Frame Start Date End Date Export to Excel DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization09/05/2025C$1.64C$1.65+0.61%C$1.69C$1.614,385 shsC$4.21 million09/04/2025C$1.68C$1.64-2.38%C$1.70C$1.64700 shsC$4.19 million09/03/2025C$1.55C$1.68+8.39%C$1.69C$1.66500 shsC$4.29 million09/02/2025C$1.69C$1.55-8.28%C$1.69C$1.555,000 shsC$3.96 million09/01/2025C$1.69C$1.69C$1.70C$1.682,800 shsC$4.31 million08/29/2025C$1.70C$1.69-0.59%C$1.70C$1.682,800 shsC$72.77 million08/28/2025C$1.60C$1.70+6.25%C$1.78C$1.666,872 shsC$73.20 million08/27/2025C$1.64C$1.60-2.44%C$1.60C$1.542,901 shsC$68.89 million08/26/2025C$1.75C$1.64-6.29%C$1.70C$1.641,200 shsC$70.62 million08/25/2025C$1.58C$1.75+10.76%C$1.75C$1.591,507 shsC$75.35 million Get the Latest News and Ratings for APS 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. 08/22/2025C$1.65C$1.58-4.24%C$1.79C$1.581,300 shsC$68.03 million08/21/2025C$1.53C$1.65+7.84%C$1.66C$1.582,059 shsC$71.05 million08/20/2025C$1.73C$1.53-11.56%C$1.79C$1.414,925 shsC$65.88 million08/19/2025C$1.85C$1.73-6.49%C$1.85C$1.736,775 shsC$74.49 million08/18/2025C$1.72C$1.85+7.56%C$1.86C$1.851,521 shsC$79.66 million08/15/2025C$1.72C$1.72C$1.72C$1.62452 shsC$74.06 million08/14/2025C$1.72C$1.72C$1.84C$1.622,989 shsC$74.06 million08/13/2025C$1.71C$1.72+0.58%C$1.84C$1.622,989 shsC$74.06 million08/12/2025C$1.72C$1.71-0.58%C$1.71C$1.70531 shsC$73.63 million08/11/2025C$1.71C$1.72+0.58%C$1.96C$1.705,792 shsC$74.06 million08/08/2025C$1.70C$1.71+0.59%C$1.79C$1.71807 shsC$73.63 million08/07/2025C$1.73C$1.70-1.73%C$1.86C$1.705,095 shsC$73.20 million08/06/2025C$1.71C$1.73+1.17%C$1.74C$1.73608 shsC$74.49 million08/05/2025C$1.68C$1.71+1.79%C$1.88C$1.712,500 shsC$73.63 million Related Companies FRX Stock Chart TH Stock Chart MDNA Stock Chart HBP Stock Chart COV Stock Chart SVA Stock Chart MBX Stock Chart GSD Stock Chart RVX Stock Chart SBM Stock Chart Receive APS Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Aptose Biosciences and its competitors with MarketBeat's FREE daily newsletter. 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