Muscle Maker, Inc. (NASDAQ:GRIL – Get Rating)’s stock price shot up 7.3% during mid-day trading on Tuesday . The stock traded as high as $1.39 and last traded at $1.32. 496,211 shares changed hands during trading, an increase of 29% from the average session volume of 385,355 shares. The stock had previously closed at $1.23. […]