Why is Hindustan Zinc falling/rising?

As of 06-Oct, Hindustan Zinc Ltd is currently priced at 491.50, reflecting a slight decrease of 0.15 (-0.03%). The stock has shown a positive performance over the past week and month, with returns of +5.35% and +11.64%, respectively, while year-to-date it has increased by +10.77%. However, the stock's performance over the past year has been negative at -5.16%. Despite trading above all key moving averages, there has been a notable decline in investor participation, with delivery volume falling by 35.89% compared to the 5-day average. The company has a low debt-to-equity ratio, indicating financial stability, but it faces challenges such as poor long-term growth in operating profit and a significant percentage of promoter shares being pledged, which can exert downward pressure on the stock price.
In the broader market context, Hindustan Zinc's recent returns have outperformed the benchmark Sensex, which has only increased by +1.77% over the past week and +1.34% over the past month. However, the stock's negative annual return contrasts with the Sensex's slight gain of +0.12% during the same period. The company's valuation appears expensive relative to its peers, and while profits have risen, the stock's performance has not reflected this growth, leading to a PEG ratio of 0.8. The combination of high promoter share pledging and declining quarterly performance metrics may contribute to investor caution, impacting the stock's price movement.