In the latest fiscal period Q1'26, Vistra Corp (VST) reported a ROS of 26.15%, representing a significant recovery from the 12.63% recorded in the previous quarter. This latest data point stands as one of the highest profitability levels observed within the analyzed timeframe. From Q2'23 to Q1'26, the company's ROS has exhibited a highly volatile trend, characterized by sharp cyclical fluctuations and a notable dip into negative territory at -3.18% in Q1'25. Following that low point, the margin has trended generally upward, recovering from the compressed levels seen between Q4'23 and Q1'25 to stabilize at a stronger performance range in recent quarters.