Why is Delta Auto. falling/rising?

As of 18-Sep, Delta Autocorp Ltd is experiencing a price increase, currently at 69.15, which reflects a rise of 1.4 or 2.07%. The stock has outperformed its sector by 1.61% today, although it is trading higher than its 5-day and 20-day moving averages, but lower than its 50-day, 100-day, and 200-day moving averages. Notably, there has been a significant decline in investor participation, with delivery volume dropping by 78.72% against the 5-day average, indicating a potential concern for future trading activity. Unfortunately, there is no information available regarding positive or negative factors that could further explain the stock's recent movement.
In the broader market context, Delta Autocorp's short-term return over the past week is +1.39%, which is slightly lower than the Sensex's return of +1.67% during the same period. This suggests that while the stock is rising, it is not keeping pace with the overall market benchmark. Over the past month, Delta Autocorp has also underperformed the Sensex, which has increased by 2.20%, indicating that the stock's upward movement may be limited compared to the broader market trends.