Why is National Standar falling/rising?

As of 17-Jul, National Standard (India) Ltd is experiencing a price increase, currently at Rs 2,597.85, reflecting a rise of 117.2 points or 4.72%. Today's performance indicates that the stock has outperformed its sector by 4.96%, reaching an intraday high of Rs 2,599.95. Despite this positive movement, the stock has shown a decline of 10.08% over the past month and a significant drop of 40.55% year-to-date. The company has a low Debt to Equity ratio, which is a positive factor; however, it also suffers from poor management efficiency, as indicated by a low Return on Equity (ROE) of 6.09%, and has reported a decline in profitability with a -37.09% growth in PAT over the latest six months. Additionally, the stock's valuation appears expensive with a Price to Book Value of 19.1, and domestic mutual funds hold no stake in the company, suggesting a lack of confidence in its prospects.
In the broader market context, the stock's short-term return of +2.20% over the past week contrasts sharply with the Sensex, which has declined by 1.12% during the same period. However, the stock has consistently underperformed against the benchmark over the last three years, with a staggering -52.76% return compared to the Sensex's +53.01%. This long-term underperformance, coupled with the recent price increase, highlights a complex situation where short-term gains may not reflect the underlying challenges faced by the company.