Shares of Vistra Corp. slipped 3.78% to $184.13 Wednesday, on what proved to be an all-around favorable trading session for the stock market, with the S&P 500 Index rising 0.32% to 6,263.70 and ...

Talen rose 8.7%, Constellation gained 4.6%, and Vistra was up 6% after the power grid operator said its 2026/2027 base residual auction had secured 134,311 megawatts of unforced capacity ...