Why is Star Delta Trans falling/rising?

As of 05-Sep, Star Delta Transformers Ltd is currently priced at 640.75, reflecting an increase of 1.75 (0.27%). Today's price summary indicates that the stock has outperformed its sector by 0.67%, although it is trading higher than its 20-day moving average but lower than its 5-day, 50-day, 100-day, and 200-day moving averages. Despite this positive movement, the stock has seen a significant decline in investor participation, with delivery volume falling by 62.15% against the 5-day average. Over the past year, the stock has underperformed with a return of -19.71%, while the company has shown healthy long-term growth with net sales increasing at an annual rate of 31.81% and operating profit at 49.52%. However, the company also faces challenges such as low management efficiency, indicated by a low return on equity of 9.32%, and flat results in the most recent quarter.
In the broader market context, the stock's performance over the past week has been a decline of 2.08%, while the Sensex has increased by 1.13%. This underperformance highlights the stock's struggle relative to the benchmark. Year-to-date, Star Delta Transformers Ltd has seen a significant drop of 30.04%, contrasting sharply with the Sensex's gain of 3.29%. The company's attractive valuation, with a price-to-book value of 2.3, suggests it is trading at fair value compared to peers, but the overall negative sentiment and recent poor financial results have contributed to its declining stock price.