Why is Gabriel India falling/rising?

As of 12-Sep, Gabriel India Ltd's stock price is currently at 1,220.00, reflecting a decrease of 23.3 points or 1.87%. The stock has been underperforming, having fallen for the last two days with a total decline of 3.3%. In terms of performance, it has underperformed its sector by 2.61% today, and the delivery volume has significantly decreased by 52.7% compared to the 5-day average, indicating falling investor participation. Despite a strong long-term performance with a 156.30% increase year-to-date and a solid average Return on Equity (ROE) of 20.70%, the stock's valuation appears very expensive with a Price to Book Value of 14.8. This high valuation, coupled with a relatively modest profit increase of 11.7% over the past year, may be contributing to the recent downward price movement.
In the broader market context, the stock's short-term performance over the past week shows a gain of 0.67%, which is lower than the Sensex's increase of 1.48% during the same period. While Gabriel India has demonstrated strong long-term growth and consistent returns, the recent price decline suggests that investors may be reacting to the high valuation concerns and reduced trading activity. The stock's liquidity remains adequate for trading, but the significant drop in delivery volume could signal a lack of confidence among investors, further impacting its price negatively.