Why is Lupin falling/rising?

As of 02-Sep, Lupin Ltd. is experiencing a decline in its stock price, currently at 1,891.90, which reflects a decrease of 6.65 points or 0.35%. The stock has been underperforming, having lost 4.21% over the last six days and is trading below its 5-day, 20-day, 50-day, 100-day, and 200-day moving averages. Additionally, the delivery volume has significantly decreased by 42.84% compared to the 5-day average, indicating falling investor participation. Over the past year, the stock has generated a return of -15.24%, which is notably worse than the benchmark's negative return of -2.91%.
In the broader market context, while the Sensex has shown a slight decline of 0.78% over the past week, Lupin's performance has been worse, with a drop of 1.93%. Despite the company's strong fundamentals, including a low debt-to-equity ratio and impressive growth in operating profit, the stock's recent performance has been hampered by its significant underperformance relative to the market. The high institutional holdings suggest that informed investors are aware of the company's potential, but the stock's continued decline indicates a lack of confidence among retail investors. Overall, the combination of recent price movements, declining investor interest, and underperformance against the benchmark has contributed to Lupin's falling stock price.