 Aclaris Therapeutics Inc NASDAQ:ACRSs share price dropped 4.3 during trading on Friday . The company traded as low as 1.55 and last traded at 1.57, approximately 8,317 shares changed hands during mid-day trading. A decline of 99 from the average daily volume of 720,054 shares. The stock had previously closed at 1.64. ACRS has been ... 