Why is Star Delta Trans falling/rising?

As of 10-Sep, Star Delta Transformers Ltd is experiencing a decline in its stock price, currently at Rs 623.90, which represents a decrease of Rs 17.55 or 2.74%. The stock has underperformed its sector by 4.66% today and has been on a consecutive downward trend for the last two days, accumulating a total drop of 2.97%. Additionally, the stock's performance over the past week shows a decline of 4.46%, while its year-to-date performance reflects a significant drop of 31.88%. Despite a healthy long-term growth in net sales and operating profit, the company has faced challenges, including a low return on equity (ROE) of 9.32%, which indicates poor management efficiency and low profitability per unit of shareholders' funds.
In the broader market context, the stock's recent performance contrasts sharply with the Sensex, which has gained 1.06% over the past week. This underperformance is further highlighted by the stock's negative return of 20.12% over the past year compared to the market's slight decline of 0.61%. The falling investor participation, as evidenced by a 22.62% drop in delivery volume against the five-day average, suggests a lack of confidence among investors. Although the stock is trading at a fair value compared to its peers, the flat results reported in June and the significant drop in net sales have contributed to the negative sentiment surrounding the stock, leading to its current decline.