Quantum BioPharma Ltd. (QNTM) climbed 18.08 percent, or $1.63, to $10.52 on Monday, after the company disclosed that shareholder Paul Durkacz has filed a class action lawsuit alleging stock manipulation involving the company's shares.
Shares opened at $10.30 and traded between $10.05 and $11.49 during the session on the Nasdaq. Trading volume reached about 0.33 million shares, above the average daily volume of roughly 0.11 million shares.
Quantum BioPharma is currently trading within a 52-week range of $2.89 to $38.25.
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