Why is Vista Pharma. falling/rising?

As of 18-Nov, Vista Pharmaceuticals Ltd is experiencing a decline in its stock price, currently at Rs. 8.00, which represents a decrease of Rs. 0.39 or 4.65%. The stock has hit a new 52-week low of Rs. 7.63 today and has underperformed its sector by 4.03%. It has been on a downward trend, losing 15.07% over the last two days. Additionally, the stock has shown poor performance over various time frames, with a year-to-date decline of 32.09% and a one-year drop of 33.88%. The stock is currently trading below its 5-day, 20-day, 50-day, 100-day, and 200-day moving averages, indicating a bearish trend. Although there has been a significant increase in investor participation, with delivery volume rising by 2223.84% against the 5-day average, the overall sentiment remains negative.
In the broader market context, Vista Pharmaceuticals' performance has been notably worse than the benchmark Sensex, which has gained 0.96% over the past week and 8.36% year-to-date. This stark contrast highlights the stock's struggles relative to the overall market. The company's significant underperformance in comparison to the benchmark and sector, coupled with its recent price declines, suggests a lack of investor confidence and potential concerns regarding its future prospects.