Why is BSL falling/rising?

As of 17-Sep, BSL Ltd's stock price is currently at Rs 170.00, reflecting an increase of Rs 7.0 or 4.29%. The stock has shown a strong performance today, outperforming its sector by 3.28%. It reached an intraday high of Rs 188, marking a significant rise of 15.34%. Additionally, the stock has experienced a notable increase in investor participation, with delivery volume rising by 60.92% compared to the 5-day average. Over the past week, the stock has gained 3.28%, and in the last month, it has surged by 17.16%. However, it is important to note that the stock is down 37.71% year-to-date and 27.46% over the past year, indicating a challenging longer-term trend.
In the broader market context, BSL Ltd's recent performance contrasts positively with the Sensex, which has only increased by 1.56% over the past week and 2.60% over the past month. While BSL has shown strong short-term gains, its year-to-date performance remains significantly lower than the benchmark index, which has risen by 5.83% during the same period. This divergence suggests that while BSL is currently experiencing a rebound, it has a considerable way to go to recover from its substantial losses in the longer term.