Why is Diamond Power falling/rising?

As of 22-Aug, Diamond Power Infrastructure Ltd is currently priced at 146.60, reflecting a decrease of 0.5, or 0.34%. The stock has underperformed its sector today by 0.26% and has experienced a consecutive decline over the last three days, resulting in a total drop of 3.01%. Despite positive results in the last seven quarters, including a significant growth in net sales and operating profit, the company faces challenges such as a negative book value and high debt levels, which contribute to its weak long-term fundamental strength. Additionally, the recent decrease in promoter stake by 5.98% may indicate reduced confidence in the company's future prospects, further impacting investor sentiment.
In the broader market context, the stock has underperformed the Sensex, which has gained 0.88% over the past week while Diamond Power has declined by 0.88%. Year-to-date, the stock is down 3.90%, contrasting sharply with the Sensex's 4.05% increase. This disparity highlights the stock's struggles relative to the overall market, compounded by its poor long-term growth metrics and low profitability per unit of shareholders' funds. The combination of these factors suggests that investor confidence is waning, contributing to the stock's recent price decline.