Why is Grindwell Norton falling/rising?

As of 02-Jul, Grindwell Norton Ltd. is currently priced at 1,720.75, reflecting a slight decrease of -0.05 (0.00%). The stock has underperformed its sector by -0.58% today and has experienced a consecutive decline over the last two days, resulting in a total drop of -0.35% during this period. In terms of returns, the stock has shown a mixed performance: it gained +1.10% over the past week but has declined by -2.81% over the last month and -10.53% year-to-date. Despite a high management efficiency indicated by an ROE of 18.29% and a low debt-to-equity ratio, the stock faces challenges due to poor long-term growth, with net sales and operating profit growing at only 12.22% and 15.26% annually over the last five years, respectively. Additionally, the stock's valuation appears expensive with a price-to-book value of 8.4, and it has generated a significant return of -39.70% over the past year, indicating a concerning trend.
In the broader market context, Grindwell Norton has underperformed compared to the Sensex, which has gained +0.79% over the past week and +6.75% year-to-date. The stock's recent performance contrasts sharply with the benchmark, particularly over the long term, where it has lagged behind the BSE500 in returns over the last three years, one year, and three months. While there has been a notable increase in investor participation, as evidenced by a 1620.09% rise in delivery volume on July 1, this has not translated into positive price movement, reflecting broader concerns about the company's growth prospects and valuation relative to its peers.