Why is Yash Optics falling/rising?

As of 19-Sep, Yash Optics & Lens Ltd is currently priced at Rs 151.00, showing no change (0.00%). The stock has demonstrated strong performance recently, with a 1-week return of +7.86% and a remarkable 1-month return of +48.70%. It is also trading higher than its 5-day, 20-day, 50-day, 100-day, and 200-day moving averages, indicating a positive trend. However, there has been a notable decline in investor participation, with delivery volume dropping by 43.55% against the 5-day average, which may suggest a decrease in buying interest. The stock is also close to its 52-week high, just 1.52% away from Rs 153.3.
In the broader market context, Yash Optics has significantly outperformed the Sensex, which has only increased by 0.85% over the past week. The stock's year-to-date return of +73.56% starkly contrasts with the Sensex's +7.11%, highlighting its strong relative performance. Despite the recent drop in delivery volume, the overall upward trend in stock price and its strong returns compared to the benchmark suggest that Yash Optics is experiencing a positive momentum in the market.