Why is Vista Pharma. falling/rising?

As of 19-Nov, Vista Pharmaceuticals Ltd is experiencing a price increase, currently at Rs 9.18, which represents a rise of 1.53 or 20.0%. Today, the stock has outperformed its sector by 19.93% and has shown a trend reversal after two consecutive days of decline. It opened with a significant gain of 9.54% and reached an intraday high of Rs 9.18. However, despite this positive movement, the stock has been trading lower than its 5-day, 20-day, 50-day, 100-day, and 200-day moving averages. Additionally, there has been a notable decrease in investor participation, with delivery volume falling by 25.71% compared to the 5-day average, indicating a potential concern regarding sustained interest in the stock.
In the broader market context, Vista Pharmaceuticals has underperformed compared to the Sensex over various periods, including a 3-year return of +19.22% against the Sensex's +38.15%. In the short term, the stock has declined by 3.77% over the past week while the Sensex has gained 0.85%. This disparity highlights the challenges Vista Pharmaceuticals faces in attracting investor confidence despite today's positive price movement. The stock's high volatility, with an intraday fluctuation of 8.77%, further emphasizes the uncertainty surrounding its performance in the current market environment.