Why is Rossari Biotech falling/rising?

As of 04-Sep, Rossari Biotech Ltd is experiencing a decline in its stock price, currently at Rs 629.00, which reflects a decrease of Rs 9.55 or 1.5%. The stock has underperformed its sector by 0.61% today and has fallen after four consecutive days of gains. It touched an intraday low of Rs 625, indicating a downward trend. Over the past week, the stock has shown a modest increase of 1.94%, but it has significantly underperformed over the longer term, with a 9.05% decline in the past month and a staggering 20.15% drop year-to-date. Despite having a low debt-to-equity ratio and attractive valuation metrics, the stock's performance has been hampered by flat results in June and consistent underperformance against benchmarks over the last three years.
In the broader market context, the Sensex has shown a positive return of 0.80% over the past week, contrasting with Rossari Biotech's performance. The stock's year-to-date return of -20.15% starkly contrasts with the Sensex's gain of 3.30%, highlighting a significant divergence in performance. The high institutional holdings at 21.32% suggest that informed investors are closely monitoring the stock, yet the falling investor participation, with a 35.93% drop in delivery volume, indicates waning interest among retail investors. This combination of factors contributes to the stock's current downward trajectory amidst a generally stable market environment.