Why is Menon Pistons falling/rising?

As of 16-Sep, Menon Pistons Ltd is experiencing a price increase, currently at Rs 69.71, reflecting a rise of 1.65 or 2.42%. The stock has outperformed its sector today by 1.45%, reaching an intraday high of Rs 70.69. Over the past week, the stock has gained 2.21%, and over the past month, it has risen by 8.75%. Despite a year-to-date decline of 2.69% and a significant drop of 19.86% over the past year, the company has shown positive results recently, including a high return on equity (ROE) of 17.80% and a low debt-to-equity ratio of 0.07. These factors, combined with a strong performance in net sales and a favorable price-to-book value, contribute to the stock's upward movement.
In the broader market context, Menon Pistons has outperformed the Sensex, which has increased by 1.58% over the past week. However, the stock has underperformed the market over the last year, where the Sensex has only declined by 0.73%. The recent rise in stock price may be attributed to improved management efficiency and positive quarterly results, despite the long-term growth concerns highlighted by a modest annual growth rate in net sales and operating profit. Additionally, the falling investor participation, indicated by a decrease in delivery volume, suggests caution among investors, which could impact future price movements.