Why is Bharat Immunolog falling/rising?

As of 04-September, Bharat Immunological & Biological Corporation Ltd's stock price is currently at 22.05, reflecting a decline of 0.84, or 3.67%. The stock has recently underperformed its sector by 3.52% and has experienced a trend reversal, falling after three consecutive days of gains. Despite a notable increase in delivery volume, which rose by 555.91% against the 5-day average, the stock remains below its longer-term moving averages (50-day, 100-day, and 200-day). Over the past year, the stock has seen a significant decline of 24.02%, while year-to-date it has dropped 7.31%. Unfortunately, there is no information available regarding positive or negative factors that could further explain the stock's recent movement.
Broader Market Context: In comparison to the benchmark Sensex, Bharat Immunological's short-term performance over the past week shows a gain of 2.42%, while the Sensex has only increased by 0.80%. However, the stock's year-to-date performance is notably worse than the Sensex, which has risen by 3.30%. This disparity indicates that while the stock has had some short-term gains, its overall performance remains weak relative to the broader market, contributing to the current decline in its price.