Why is SPARC falling/rising?

As of 08-Sep, Sun Pharma Advanced Research Company Ltd's stock is currently priced at 141.15, reflecting a decline of 4.1 points or 2.82%. The stock has underperformed its sector by 2.69% today, hitting an intraday low of Rs 141, which is a decrease of 2.93%. Over the past week, the stock has seen a slight decline of 0.74%, while its year-to-date performance shows a significant drop of 29.51%. The company has reported a negative book value and weak long-term fundamental strength, with net sales declining at an annual rate of 23.40% and operating profit decreasing by 1.19% over the last five years. Additionally, the stock's ability to service its debt is concerning, as indicated by a poor EBIT to interest ratio of -141.22.
In the broader market context, the Sensex has increased by 0.53% over the past week, contrasting sharply with SPARC's performance. This consistent underperformance against the benchmark is evident, as the stock has generated a return of -37.24% over the past year, while the Sensex has remained nearly flat at -0.49%. The liquidity of the stock appears adequate for trading, with a delivery volume increase of 21.7% on September 5, but the overall sentiment remains negative due to the company's financial struggles and the lack of positive growth indicators.