Why is Simm. Marshall falling/rising?

As of 17-Nov, Simmonds Marshall Ltd is experiencing a decline in its stock price, currently at 137.15, which represents a decrease of 14.0 points or 9.26%. The stock has underperformed its sector by 10.15% today and has been on a consecutive downward trend for the last two days, resulting in a total drop of 10.15% in that period. Although the stock opened with a gain of 2.48% and reached an intraday high of Rs 154.9, it also hit a low of Rs 135.5, indicating significant volatility with an intraday range of Rs 19.4. Furthermore, the stock's performance over the past week shows a decline of 10.48%, while its year-to-date performance reflects a drop of 8.57%. The stock is currently trading above its 200-day moving average but below its shorter-term moving averages, suggesting mixed technical signals. There is no information available regarding positive or negative factors impacting the stock.
Broader market context indicates that while Simmonds Marshall Ltd has faced a decline, the benchmark Sensex has shown a positive return of 1.69% over the past week. This stark contrast highlights the stock's underperformance relative to the broader market, as it has not only fallen in the short term but also underperformed over longer periods, including a year-to-date decline compared to the Sensex's gain of 8.72%. The overall market sentiment appears to be more favorable than that of Simmonds Marshall Ltd, contributing to the stock's recent struggles.