 Shares of Aduro BioTech Inc NASDAQ:ADRO fell 13.2 on Tuesday . The stock traded as low as 2.48 and last traded at 2.49, 515,986 shares traded hands during trading. A decline of 57 from the average session volume of 1,204,937 shares. The stock had previously closed at 2.87. Several research firms have weighed in on ... 