Why is Grill Splendour falling/rising?

As of 01-October, Grill Splendour Services Ltd is experiencing a price increase, with its current price at 128.10, reflecting a rise of 6.1 or 5.0%. The stock has outperformed its sector today by 4.57%, and it is trading above its 5-day, 20-day, 50-day, 100-day, and 200-day moving averages. Over the past week, the stock has gained 1.26%, and for the month, it has risen by 4.57%. Year-to-date, Grill Splendour has shown a remarkable increase of 54.15%, significantly outperforming the Sensex, which has only risen by 5.04%. However, there has been a notable decline in investor participation, with delivery volume dropping by 86.84% against the 5-day average, indicating a potential concern for future trading activity.
In the broader market context, Grill Splendour's performance contrasts sharply with the Sensex, which has declined by 0.88% over the past week. While the stock has shown strong returns over various periods, the broader market has not performed as well, particularly in the last year where the Sensex has decreased by 3.72%. This divergence suggests that Grill Splendour is benefiting from company-specific factors that are driving its price upward, despite a generally weaker market environment.