GT Biopharma (NASDAQ:GTBP) stock is soaring higher on Monday alongside heavy pre-market trading of the clinical-stage biopharmaceutical company’s shares.This has more than 10.6 million shares of GTBP stock changing hands as of this writing. That’s well above its daily average trading volume of only about 10,000 shares. It’s also worth mentioning that the company’s float is sitting at 1.19 million shares.All of this activity for GTBP stock comes without any news from GT Biopharma. That includes a lack of any ...