Why is Yash Optics falling/rising?

As of 23-Sep, Yash Optics & Lens Ltd is experiencing a slight decline in its stock price, currently at Rs 146.95, reflecting a decrease of 0.1 or 0.07%. The stock has shown strong performance over the past month, with a return of 28.57%, and a year-to-date increase of 68.91%. However, it is currently 4.46% away from its 52-week high of Rs 153.5. Despite the stock outperforming its sector by 0.35% today, there has been a notable drop in investor participation, with delivery volume falling by 47.76% against the 5-day average, which may indicate reduced buying interest. Unfortunately, there is no information available regarding positive or negative factors affecting the stock.
In the broader market context, Yash Optics has underperformed the benchmark Sensex in the short term, with a weekly return of -0.68% compared to the Sensex's -0.28%. However, the stock has significantly outperformed the benchmark over longer periods, including a 1-month return of 28.57% versus the Sensex's 1.20% and a year-over-year return of 58.95% compared to the Sensex's -2.97%. This suggests that while the stock is currently facing a minor setback, its overall performance remains strong relative to the market, particularly in the longer term.