After hosting investor meetings with managements in Texas, Citi analyst Praful Mehta believes the likelihood of a Dynegy (DYN) acquisition by Vistra Energy (VST) is increasing. He views price as the "likely gating item" and continues to expect an $11-$12 per share buyout price for Dynegy in an all stock deal. Vistra management seems "more open to the deal than we originally interpreted," Mehta tells investors in a research note. The analyst also believes a private equity exit for Calpine (CPN) is increasing likely as the company continues with its reported sale process.

Janney Montgomery Scott initiated coverage of Vistra with a Buy rating and $82 fair value estimate.