Is Vistra Stock A Buy Today After Trailing The Market?

Vistra (VST) stock has lost 16.3% over the past twelve months, trailing the 17.1% return of the S&P 500. Yet the power company is earning more than it did a year ago. Second-quarter 2026 adjusted EBITDA, a measure of operating profit, climbed more than 30% from the prior year. Large customers are also signing long contracts for its power. So what is a buyer of Vistra stock paying for today.