With an expected IPO price of $17, Aduro Biotech (NASDAQ:ADRO), a developer of cancer immunotherapy treatments, is riding the current wave of biotech interest by posting the one of the best IPO opening days of 2015. Out of the gates at an amazing $32 per share, Aduro rose to an impressive close at $42, up 147.06%. Aduro was up to $44.40 in after hours trading.