Why is BLS Internat. falling/rising?

As of 26-Aug, BLS International Services Ltd's stock price is currently at Rs 372.80, reflecting an increase of Rs 4.75 or 1.29%. Today, the stock opened with a gain of 3.63% and reached an intraday high of Rs 392.45, indicating strong initial momentum. However, despite this positive movement, the stock has shown a decline of 0.05% over the past week and a significant drop of 22.79% year-to-date. The company has reported healthy long-term growth, with net sales increasing at an annual rate of 31.58% and operating profit growing at 66.35%. Despite these positive results, the stock's valuation appears expensive with a Price to Book Value of 8.9, and institutional investor participation has decreased, which may contribute to the stock's volatility.
In the broader market context, the Sensex has declined by 1.05% over the past week, while BLS International has slightly outperformed this benchmark. The stock's performance over the last month shows a gain of 2.00%, contrasting with the Sensex's decline of 0.83%. However, the stock's year-to-date performance remains concerning, with a significant underperformance compared to the benchmark's positive return of 3.39%. The falling participation from institutional investors, who have reduced their stake in the company, could indicate a lack of confidence in the stock's future performance, further influencing its price movements.