Why is Diamond Power falling/rising?

As of 16-Sep, Diamond Power Infrastructure Ltd is currently priced at 156.30, reflecting a decrease of 2.1, or 1.33%. The stock has recently underperformed its sector by 2.39% and is experiencing a trend reversal after five consecutive days of gains. Despite this decline, the stock has shown strong performance over the past week, with a return of 6.25%, and has outperformed the Sensex over various periods, including a 9.03% return over the last year. However, the company faces challenges, including a negative book value and high debt levels, which contribute to concerns about its long-term fundamental strength. While it has reported positive results over the last seven quarters, including significant growth in net sales and profit after tax, the overall weak long-term growth rate and decreasing promoter confidence may be impacting investor sentiment.
In the broader market context, Diamond Power's recent performance contrasts with the Sensex, which has gained 1.58% over the past week. Although the stock has outperformed the benchmark in the long term, the recent decline suggests a shift in investor perception, possibly influenced by the company's high debt-to-equity ratio and the reduction in promoter stake. This combination of strong short-term returns and underlying financial concerns may be leading to the current price movement, as investors weigh the risks associated with the company's financial health against its recent operational successes.