Baystreet Staff - Tuesday, January 3, 2017 Altra Industrial Motion (AIMC) Gains on Buying Stromag Altra Industrial Motion Corp. (NASDAQ: AIMC) shares forged ahead 1.1% to $37.30, as the company closed on the acquisition of the Stromag business from GKN plc. Share volume was 27,000, compared to an all-day average of 171,000