Why is Simplex Castings falling/rising?

As of 14-Nov, Simplex Castings Ltd is experiencing a price increase, currently priced at 543.85, which reflects a rise of 27.55 or 5.34%. The stock has recently hit a new 52-week and all-time high of Rs. 553.5, showcasing strong performance with a 12.22% increase over the past week and a remarkable 72.62% rise year-to-date. Despite a wide trading range today, the stock has shown resilience, outperforming its sector by 5.02%. However, there has been a notable decline in investor participation, with delivery volume falling by 13.96% compared to the five-day average, indicating a potential concern for sustained momentum.
Broader Market Context: In comparison to the benchmark Sensex, which has increased by 1.62% over the past week, Simplex Castings has significantly outperformed, highlighting its strong market position. Over the past month, the stock has gained 32.89%, while the Sensex has only risen by 3.09%. This trend of outperformance is consistent over longer periods, with the stock showing a staggering 1185.70% increase over three years compared to the Sensex's 37.22%. The high volatility of 5.09% today suggests active trading, but the falling delivery volume may raise questions about the sustainability of this upward trend.