Why is Rossari Biotech falling/rising?

As of 19-Aug, Rossari Biotech Ltd's current price is 641.50, reflecting an increase of 3.2 (0.5%). The stock has been gaining for the last two days, with a total return of 2.72% during this period. However, over the past month, the stock has declined by 13.51%, and its year-to-date performance shows a significant drop of 18.56%. Despite this recent uptick, the stock is still trading at a discount compared to its peers, with a low Debt to Equity ratio of 0.03 times and a return on equity of 11.5, indicating a very attractive valuation. High institutional holdings at 21.32% suggest that knowledgeable investors are backing the stock, although the company's profits have decreased by 1% over the past year.
In the broader market context, the stock's short-term performance of +0.97% over the past week lags behind the Sensex, which has increased by 1.76% during the same period. This underperformance is notable given the stock's substantial declines over longer time frames, such as a 30.55% drop over the past year compared to the Sensex's modest gain of 1.52%. The falling investor participation, indicated by a 21.21% decrease in delivery volume against the 5-day average, may also contribute to the stock's volatility and overall market perception.