Why is Sanofi Consumer falling/rising?

As of 25-Sep, Sanofi Consumer Healthcare India Ltd is experiencing a decline in its stock price, currently at Rs 4,890.00, which reflects a decrease of Rs 111.55 or 2.23%. The stock has been underperforming, having fallen consecutively for the last five days, resulting in a total decline of 7.82% over the past week. Additionally, the stock is trading below its 5-day, 20-day, 50-day, 100-day, and 200-day moving averages, indicating a bearish trend. Despite some positive factors such as high management efficiency with a return on equity of 74.20% and a low debt-to-equity ratio, the stock's valuation appears very expensive with a price-to-book value of 41.4. Furthermore, the company has shown flat results in June 2025, and its profits have decreased by 27% over the past year, contributing to the stock's negative momentum.
In the broader market context, the stock's performance has been notably weaker than the benchmark, with a 1-week return of -7.82% compared to the Sensex's decline of only 2.23%. Over the past year, Sanofi has generated a return of -5.96%, which is also lower than the benchmark's performance. The recent drop in investor participation, with delivery volume falling by 93.08% against the 5-day average, further suggests a lack of confidence among investors. Although there is rising promoter confidence with a 10.87% increase in stake, the overall consistent underperformance against the benchmark over the last three years raises concerns about the stock's future prospects.