Why is Bharat Immunolog falling/rising?

As of 11-Sep, Bharat Immunological & Biological Corporation Ltd's stock price is currently at 22.18, reflecting an increase of 0.48 or 2.21%. The stock has shown a trend reversal by gaining after three consecutive days of decline. Despite this positive movement today, the stock's performance over the past year has been significantly negative, with a decline of 22.15%. Additionally, the stock has outperformed its sector by 1.74% today, although it is currently trading higher than the 20-day moving average but lower than the 5-day, 50-day, 100-day, and 200-day moving averages. Notably, there has been a substantial drop in investor participation, with delivery volume falling by 59.99% against the 5-day average, indicating reduced trading interest.
In the broader market context, the stock's short-term return over the past week is +0.59%, which is lower than the benchmark Sensex's return of +1.03% during the same period. This suggests that while the stock is experiencing a slight recovery today, it is still lagging behind the overall market performance. Year-to-date, Bharat Immunological's stock has declined by 6.77%, contrasting sharply with the Sensex's gain of 4.36%. The significant underperformance over longer periods, such as a 22.45% decline over three years compared to the Sensex's 36.38% gain, highlights ongoing challenges for the company in attracting investor confidence and maintaining market interest.