Why is Garware Tech falling/rising?

As of 12-Sep, Garware Technical Fibres Ltd is experiencing a decline in its stock price, currently at Rs 773.85, which reflects a decrease of Rs 8.65 or 1.11%. The stock has underperformed its sector by 0.53% today and has seen a trend reversal after two consecutive days of gains. It touched an intraday low of Rs 766.3, indicating a drop of 2.07%. Over the past week, the stock has gained 1.31%, but it has underperformed over the past month with a decline of 5.99%. Despite a high management efficiency indicated by a return on equity (ROE) of 17.80% and a low debt-to-equity ratio of 0.02, the company faces challenges such as poor long-term growth and flat results in its latest quarterly report, contributing to its recent price movement.
In the broader market context, the Sensex has increased by 1.48% over the past week, while Garware Technical Fibres Ltd has only managed a 1.31% gain, indicating a slight underperformance relative to the benchmark. The company's year-to-date performance shows a significant decline of 18.71%, contrasting with the Sensex's increase of 4.82%. This disparity highlights the stock's struggles despite rising investor participation, as evidenced by a 43.64% increase in delivery volume. The stock's valuation appears expensive with a price-to-book ratio of 6.2, further complicating its attractiveness to investors amidst a backdrop of flat sales and declining profit before tax.