Why is TD Power Systems falling/rising?

As of 08-Jul, TD Power Systems Ltd is experiencing a decline in its stock price, currently at Rs 480.90, which reflects a decrease of Rs 7.0 or 1.43%. The stock has underperformed its sector by 2.02% today and has been on a consecutive downward trend for the last two days, resulting in a total drop of 2.84%. Over the past week, the stock has decreased by 3.86%, while it has shown a year-to-date increase of 6.61% and a significant rise of 19.09% over the past year. Despite these longer-term gains, the recent performance is concerning, particularly given the reduction in promoter confidence, as they have decreased their stake by 1.05%, which may signal a lack of confidence in the company's future prospects.
Broader market context indicates that while the Sensex has remained relatively stable with a slight increase of 0.02% over the past week, TD Power Systems' short-term performance has lagged behind this benchmark. The company's high valuation, indicated by a Price to Book Value of 8.7, combined with a lower return on equity of 20.3, suggests that the stock may be trading at a premium compared to its peers. Although the company has reported strong growth in operating profit and net profit, the recent decline in stock price could be attributed to the combination of reduced promoter confidence and the stock's current overvaluation, which may be causing investors to reassess their positions.