Why is NRB Indl Bearing falling/rising?

As of 29-Aug, NRB Industrial Bearings Ltd is experiencing a price increase, currently at Rs 27.00, which reflects a rise of 1.0 or 3.85%. The stock has outperformed its sector by 4.19% today, reaching an intraday high of Rs 27. The stock's recent performance shows a positive trend with a 1-week return of +3.85% and a 1-month return of +18.42%. However, despite these gains, there are concerns regarding falling investor participation, as the delivery volume has decreased significantly by 84.08% compared to the 5-day average. The company has reported positive financial metrics, including a high debtors turnover ratio and increased profits, but it also faces challenges such as a negative book value and high debt levels, which contribute to its weak long-term fundamental strength.
In the broader market context, while NRB Industrial Bearings has shown a strong short-term performance, the benchmark Sensex has declined by 1.84% over the past week and 1.88% over the past month. This indicates that the stock is not only rising in isolation but is also outperforming the general market trend. However, it is important to note that the stock has underperformed over the past year, with a return of -29.78%, significantly worse than the market's negative return of -2.83%. This disparity highlights the stock's volatility and the risks associated with its long-term growth potential, despite its recent upward movement.