Why is VST Industries falling/rising?

As of 02-Jul, VST Industries Ltd is currently priced at 315.85, reflecting an increase of 1.15 or 0.37%. The stock has shown strong performance recently, gaining 12.8% over the last nine days and outperforming its sector by 0.86% today. In the past week, the stock has risen by 8.65%, and over the past month, it has increased by 11.53%. However, despite these short-term gains, the company faces challenges such as a declining operating profit growth rate of -8.87% over the last five years and negative results for the last four consecutive quarters, which have contributed to a year-to-date decline of -5.72%. Additionally, while the company boasts a high return on equity (ROE) of 26.07%, it also has a high price-to-book value ratio of 4.1, indicating an expensive valuation compared to peers.
In the broader market context, the Sensex has increased by 0.79% over the past week and 2.50% over the past month, indicating that VST Industries has significantly outperformed the benchmark in the short term. However, the stock has consistently underperformed against the benchmark over the last three years, with a one-year return of -13.75% compared to the Sensex's 5.00% gain. This underperformance, combined with a decrease in institutional investor participation and a high debt-to-equity ratio, suggests that while the stock is experiencing a short-term rise, it faces long-term challenges that could impact its future performance.