Why is SPARC falling/rising?

As of 26-Jun, Sun Pharma Advanced Research Company Ltd's stock price is currently at 159.60, reflecting an increase of 0.6 (0.38%). The stock has been gaining for the last five days, with a notable return of 6.01% during this period, outperforming its sector by 0.3%. However, the stock has shown a decline of 3.21% over the past month and a significant drop of 20.30% year-to-date. Despite the recent gains, the company faces challenges, including a negative book value and weak long-term fundamental strength, as evidenced by a poor EBIT to Interest ratio and declining net sales and operating profit over the last five years. Additionally, the stock's liquidity is adequate for trading, but there has been a concerning drop in investor participation, with delivery volume falling by 59.11% against the five-day average.
In the broader market context, the stock's short-term performance of +6.01% over the past week contrasts with the Sensex's gain of +2.94%, indicating a stronger recent performance relative to the benchmark. However, the stock has consistently underperformed against the benchmark over the last three years, with a one-year return of -35.57% compared to the Sensex's +6.46%. This persistent underperformance, coupled with the company's weak fundamentals and negative EBITDA, suggests that while there may be short-term gains, the long-term outlook remains precarious, contributing to the overall perception of risk surrounding the stock.