Vistra (NYSE: VST ) sells electricity on a wholesale and retail basis "primarily in markets throughout the U.S." The company, which closed on the acquisition of four nuclear plants in March, is benefitting from increasing demand for electricity inAnalyst’s Disclosure: I/we have no stock, option or similar derivative position in any of the companies mentioned, and no plans to initiate any such positions within the next 72 hours. I wrote this article myself, and it expresses my own opinions. I am not receivin ...