HC Wainwright & Co. analyst Raghuram Selvaraju upgraded Aclaris Therapeutics Inc ACRS from Neutral to Buy and a price target of $20. The stock gained after the rerating.In a press release last month, Aclaris announced that it had entered into an exclusive license agreement with privately held Biosion, Inc. for worldwide rights (excluding Greater China) to BSI-045B, a potential best-in-class, clinical-stage, novel anti-TSLP monoclonal antibody, and BSI-502, a potential best-in-class, preclinical-stage, novel ...