What made GT Biopharma stock more than double on Monday?

GT Biopharma Inc (NASDAQ: GTBP) is up a whopping 150% at writing even though there hasn’t been any news to catalyse that sort of a rally in shares of the clinical-stage biopharmaceutical company. GT Biopharma stock trading volume today $GTBP did not publish a press release or file with the Securities & Exchange Commission on […]