Marinus Pharmaceuticals, Inc. (NASDAQ:MRNS – Get Free Report) dropped 7.4% on Tuesday . The stock traded as low as $9.20 and last traded at $9.22. Approximately 137,536 shares changed hands during mid-day trading, a decline of 63% from the average daily volume of 372,639 shares. The stock had previously closed at $9.96. Wall Street Analyst […]