Ambit Energy will be terminating 50 positions by mid-February at its Plano Call Center & Sales Support Office at 1600 W. Plano Parkway. The workforce reductions are a direct result of the company's recent acquisition by Vistra Energy Corp. and a restructuring of the newly combined company, according to the company's notice of employee losses. Vistra officially acquired Ambit Energy on Nov. 1. 214-812-8322. www.vistraenergy.com