Why is Bharat Immunolog falling/rising?

As of 22-Sep, Bharat Immunological & Biological Corporation Ltd is experiencing a decline in its stock price, currently at 21.77, reflecting a change of -0.16, or -0.73%. The stock has underperformed in the short term, with a 1-week return of -0.91% and a 1-month return of -3.80%. Additionally, it is trading below its 5-day, 20-day, 50-day, 100-day, and 200-day moving averages, indicating a bearish trend. However, there has been a notable increase in investor participation, with delivery volume rising by 246.56% against the 5-day average, suggesting some interest despite the overall negative performance. Unfortunately, there is no information available regarding positive or negative factors that could further clarify the stock's recent movement.
In the broader market context, the stock's performance contrasts sharply with the benchmark Sensex, which has gained 0.46% over the past week and 1.05% over the past month. This indicates that while the market is experiencing upward momentum, Bharat Immunological is lagging significantly behind, with a year-to-date decline of -8.49% compared to the Sensex's gain of 5.15%. The stark difference in performance highlights the challenges faced by Bharat Immunological in attracting investor confidence, even as the market shows resilience.