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 arthritis (RA). Furthermore, this imaging …