Why is Hemant Surgical falling/rising?

As of 15-Sep, Hemant Surgical Industries Ltd is experiencing a price increase, currently at Rs. 346.00, which reflects a rise of Rs. 6.05 or 1.78%. The stock has shown strong performance, gaining 14.65% over the last eight days and achieving a new 52-week and all-time high of Rs. 346.7 today. Additionally, the stock has outperformed its sector by 1.96%. Over the past week, it has returned 10.14%, and for the month, it has surged by 36.65%. However, there has been a notable decline in investor participation, with delivery volume dropping by 58.33% against the five-day average, which could indicate a potential concern for future trading activity.
In the broader market context, Hemant Surgical's recent performance significantly outpaces the benchmark Sensex, which has only increased by 1.24% over the past week and 1.47% over the past month. The stock's year-to-date return of 174.17% also stands in stark contrast to the Sensex's 4.67% increase, highlighting its strong relative strength. Despite the positive price movement, the falling delivery volume suggests that while the stock is currently rising, there may be underlying factors affecting long-term investor confidence.