Why is TD Power Systems falling/rising?

As of 22-Jul, TD Power Systems Ltd is experiencing a decline in its stock price, currently at 491.70, which reflects a decrease of 3.3 or 0.67%. The stock's performance today is in line with the sector, but it is trading lower than its 5-day, 20-day, and 50-day moving averages, while remaining above the 100-day and 200-day moving averages. Additionally, there has been a notable drop in investor participation, with delivery volume falling by 28.19% against the 5-day average. Despite a strong year-to-date return of 9.00% and a significant 26.89% return over the past year, the stock has underperformed the benchmark Sensex in the short term, with a 1-week return of -1.27% compared to the benchmark's -0.47%.
In terms of company-specific factors, TD Power Systems has demonstrated healthy long-term growth, with operating profit and net profit increasing significantly. However, the stock is considered very expensive with a high price-to-book value and a relatively low return on equity, which may deter some investors. Furthermore, a reduction in promoter confidence, evidenced by a 6.34% decrease in their stake, could signal concerns about the company's future prospects. This combination of high valuation, declining promoter confidence, and recent underperformance relative to the benchmark may be contributing to the stock's current downward movement.