Why is Medinova Diagno. falling/rising?

As of 01-October, Medinova Diagnostic Services Ltd is experiencing a price increase, with its current price at Rs 41.38, reflecting a rise of 1.2 or 2.99%. The stock has shown strong performance recently, gaining 6.02% over the last three days and outperforming its sector by 2.28% today. Additionally, the stock has delivered a return of 6.38% over the past year, significantly outperforming the BSE500 index over various time frames, including 3 years and 1 year. However, it is important to note that the company has a negative book value and weak long-term fundamental strength, with poor growth metrics such as a 7.48% annual growth in net sales and a 0% operating profit over the last five years.
In the broader market context, Medinova's short-term performance stands in stark contrast to the Sensex, which has declined by 0.90% over the past week. This indicates that while the stock is rising, the overall market sentiment may be weaker. Despite the positive short-term gains, the company's high debt levels and low return on capital employed (ROCE) raise concerns about its long-term viability, suggesting that investors should remain cautious. The stock's liquidity remains adequate for trading, but the recent decline in delivery volume could signal a reduction in investor participation, which may impact future price movements.