Why is Premier Energies falling/rising?

As of 18-Jun, Premier Energies Ltd is currently priced at 1,000.25, reflecting a decline of 3.7 points or 0.37%. The stock has been experiencing a downward trend, having lost 2.82% over the last two days and showing a significant drop of 11.26% over the past month. Additionally, the stock's performance today is reported to be in line with the sector, but it has seen a notable decrease in investor participation, with delivery volume falling by 66.83% compared to the five-day average. Despite the company's strong long-term fundamentals, including a robust return on equity of 33.21% and impressive growth in net sales and operating profit, the stock's valuation is considered very expensive, which may be contributing to its recent price decline.
In the broader market context, the stock's performance has been underwhelming compared to the benchmark Sensex, which has only declined by 1.30% over the past week. Year-to-date, Premier Energies has experienced a significant drop of 26.05%, contrasting sharply with the Sensex's gain of 4.23%. This disparity highlights the challenges the company faces despite positive institutional investor interest, which has increased by 1.35% in the last quarter. The overall market conditions and the stock's expensive valuation may be influencing investor sentiment negatively, leading to its current price movement.