Why is Shakti Pumps falling/rising?

As of 20-Aug, Shakti Pumps (India) Ltd is experiencing a decline in its stock price, currently at 868.00, reflecting a decrease of 8.65 points or 0.99%. The stock has underperformed its sector by 1.6% today and has fallen after two consecutive days of gains. In terms of returns, the stock has seen a negative performance over the past week and month, with declines of 0.45% and 5.61%, respectively. Despite a strong long-term growth trajectory, including a 20.43% return over the last year and impressive annual growth rates in net sales and operating profit, the stock's recent movement is hindered by falling investor participation, as evidenced by a 20.79% drop in delivery volume compared to the five-day average.
In the broader market context, the Sensex has increased by 1.64% over the past week, contrasting with Shakti Pumps' decline, indicating that the stock is not keeping pace with the overall market. While the company boasts high management efficiency and a low debt-to-equity ratio, its valuation appears expensive with a Price to Book Value of 9.2, which may deter investors. Additionally, despite positive results over the last seven quarters, the stock's performance is being affected by its relatively high PEG ratio of 0.3, suggesting that while profits have risen significantly, the stock may be overvalued compared to its growth potential.