Why is Shakti Pumps falling/rising?

As of 22-Sep, Shakti Pumps (India) Ltd is currently priced at 878.90, reflecting an increase of 3.4 (0.39%). The stock has shown positive momentum, gaining for the last two days with a total return of 1.03% during this period. Despite a recent decline of 0.84% over the past week, the stock has outperformed its sector today by 1.06%. The company has demonstrated strong financial health, evidenced by a high return on equity (ROE) of 19.67% and a low debt-to-equity ratio of 0.08. Additionally, it has reported consistent growth in net sales and operating profit, with a remarkable annual growth rate of 47.42% and 162.46%, respectively. However, the stock's valuation appears expensive with a price-to-book ratio of 9.3, which may temper investor enthusiasm despite its strong performance metrics.
In the broader market context, Shakti Pumps has underperformed the Sensex over the past week, which has gained 0.46%, while the stock itself has declined. However, over the past month, Shakti Pumps has outperformed the benchmark with a return of 3.75% compared to the Sensex's 1.05%. The stock's long-term performance remains impressive, with a 29.57% return over the past year and a staggering 920.51% increase over the last three years, indicating strong investor confidence despite recent fluctuations. The decline in delivery volume by 54.59% against the five-day average suggests a decrease in investor participation, which could be a concern for future price movements.