Why is Godfrey Phillips falling/rising?

As of 22-Sep, Godfrey Phillips India Ltd. is experiencing a decline in its stock price, currently at Rs 3,455.00, reflecting a decrease of Rs 68.7 or 1.95%. The stock has underperformed its sector by 0.94% today, having touched an intraday low of Rs 3,441.3, which is a drop of 2.34%. Despite a strong year-to-date return of 100.65% and consistent positive performance over the past three years, the stock has faced a slight downturn in the last month, with a return of -0.90%. The company has shown high management efficiency with a return on equity (ROE) of 18.33%, a low debt-to-equity ratio of 0.02, and significant growth in net profit and operating profit, indicating strong fundamentals. However, the stock is considered very expensive with a high price-to-book value of 10.2, which may be contributing to the recent price decline.
In the broader market context, Godfrey Phillips has outperformed the benchmark Sensex over the past week, with a return of 2.37% compared to the Sensex's 0.46%. However, the stock's recent performance may be affected by its high valuation relative to peers, as indicated by its PEG ratio of 1.3 and the premium at which it trades compared to historical averages. While the stock has shown impressive long-term growth and consistent returns, the combination of high valuation and recent underperformance against sector expectations could be influencing investor sentiment negatively, leading to the current price drop.