Why is Grindwell Norton falling/rising?

As of 01-Jul, Grindwell Norton Ltd. is experiencing a decline in its stock price, currently at 1,720.80, reflecting a decrease of 5.95 points or 0.34%. The stock has underperformed its sector by 1.62% today, and while it is above the 5-day and 100-day moving averages, it is below the 20-day, 50-day, and 200-day moving averages. Over the past week, the stock has shown a positive return of 4.38%, but it has a negative return of 3.60% over the past month and a significant decline of 39.28% over the past year. Additionally, the delivery volume has fallen sharply by 48.53% against the 5-day average, indicating a decrease in investor participation. Despite a high management efficiency reflected in a return on equity (ROE) of 18.29% and low debt-to-equity ratio, the stock's long-term growth prospects appear poor, with net sales and operating profit growth rates of only 12.22% and 15.26% respectively over the last five years.
In the broader market context, Grindwell Norton has underperformed compared to the Sensex, which has gained 2.00% over the past week and 2.76% over the past month. The stock's year-to-date performance is also concerning, with a decline of 10.53% compared to the Sensex's gain of 7.11%. This underperformance is compounded by the stock's flat results and a low return on capital employed (ROCE) of 21.43%, which is the lowest in the last half-year. Furthermore, despite high institutional holdings at 25.09%, which typically indicate confidence from more informed investors, the stock's valuation remains very expensive with a price-to-book value of 8.4, suggesting that it may be trading at a premium compared to its peers. Overall, the combination of poor long-term growth, declining investor interest, and unfavorable comparisons to market benchmarks contributes to the stock's recent downward movement.