 Aptose Biosciences Inc. TSE:APS NASDAQ:APTO hit a new 52-week high on Thursday . The company traded as high as C12.24 and last traded at C11.57, with a volume of 82516 shares changing hands. The stock had previously closed at C11.09. The company has a debt-to-equity ratio of 1.63, a quick ratio of 17.62 and a ... 