Why is Simm. Marshall falling/rising?

As of 22-Sep, Simmonds Marshall Ltd's stock price is currently at Rs 136.15, reflecting a decline of Rs 4.9 or 3.47%. The stock has underperformed its sector today by 2.62%, reaching an intraday low of Rs 135, which is a drop of 4.29%. Over the past week, the stock has seen a significant decrease of 8.99%, and it has also underperformed in the one-month period with a decline of 12.84%. Despite positive financial results over the last ten quarters, including a 175.94% growth in profit after tax and an attractive valuation compared to peers, the stock's recent performance has been negatively impacted by falling investor participation, as evidenced by a 30.94% drop in delivery volume against the five-day average.
Broader market context indicates that while Simmonds Marshall has generated a return of 5.01% over the past year, it has significantly lagged behind the Sensex, which has increased by 5.15% year-to-date. The stock's recent struggles are further highlighted by its performance relative to the broader market, as it has underperformed the benchmark in both the short-term and year-to-date comparisons. This combination of declining stock price, reduced trading volume, and underperformance against the benchmark suggests that investor sentiment may be cautious despite the company's strong long-term fundamentals.