Navidea Biopharmaceuticals Stock Soared Navidea Biopharmaceuticals (NAVB) stock price jumped from $1.27 to $3.04 this morning. The reason for the stock’s soaring, according to the firm’s press release, was that interim data from a trial have further corroborated Navidea’s hypotheses that Tc99m tilmanocept imaging can provide robust, quantitative imaging in healthy controls as well as in patients with active rheumatoid …