Why is Grindwell Norton falling/rising?

As of 21-Aug, Grindwell Norton Ltd. has seen its stock price rise to 1,536.95, reflecting an increase of 21.95 or 1.45%. The stock has outperformed its sector today by 3.08% and has been on a positive trajectory, gaining 4.63% over the past week. However, despite this recent uptick, the stock has experienced a significant decline of 20.09% year-to-date and a staggering 37.50% over the past year. The company boasts a high management efficiency with a return on equity (ROE) of 18.29% and a low debt-to-equity ratio, which may contribute positively to investor sentiment. Nonetheless, the stock's long-term growth prospects appear poor, with net sales growing at only 14.94% annually over the last five years, and recent financial results showing a decline in profits.
In the broader market context, Grindwell Norton has outperformed the Sensex by 4.63% over the past week, while the benchmark index has only increased by 1.74%. However, the stock has consistently underperformed against the benchmark over the last three years, highlighting a concerning trend for investors. The stock's valuation appears high relative to its earnings, with a price-to-book value of 7.5, and it has generated negative returns compared to its peers. This combination of short-term gains amidst long-term challenges may create a mixed outlook for potential investors, as the stock's recent performance contrasts sharply with its historical underperformance.