Why is Pidilite Inds. falling/rising?

As of 10-Oct, Pidilite Industries Ltd is currently priced at 1,506.20, reflecting a decrease of 3.0 points or 0.2%. The stock has underperformed its sector today by 0.59% and has experienced a trend reversal, falling after two consecutive days of gains. Additionally, the stock's delivery volume has decreased significantly by 41.19% compared to the five-day average, indicating a drop in investor participation. Over the past week, the stock has gained 1.13%, but it has underperformed the benchmark Sensex over the past month and year, with returns of -1.89% and -3.91%, respectively. Despite its strong long-term fundamentals, including a low debt-to-equity ratio and high return on capital employed, the stock's valuation appears expensive, which may contribute to its recent price decline.
In the broader market context, while the Sensex has increased by 1.59% over the past week and 5.58% year-to-date, Pidilite Industries has lagged behind, particularly in the short-term performance against the benchmark. The company's consistent underperformance over the last three years, coupled with a high PEG ratio of 4.1, suggests that investors may be cautious about its valuation despite positive long-term growth indicators. This combination of factors, including falling investor participation and relative underperformance, likely contributes to the stock's current downward movement.