07:44 AM EDT, 07/22/2025 (MT Newswires) -- Quantum BioPharma Ltd. ( QNTM ) , a biopharmaceutical company dedicated to innovative therapies for neurodegenerative disorders, was at last look up more than 4% in US premarket trade as it announced Tuesday the purchase of 2,000 shares of GameStop Corp. ( GME ) to hold on the company's balance sheet as a strategic investment. The company said this move aligns with its "ongoing commitment to combating market corruption and enhancing shareholder value through prudent financial strategies and advocacy against manipulative trading practices".