Why is Sanofi India falling/rising?

As of 29-Sep, Sanofi India Ltd's stock price is currently at 4,709.00, reflecting a decrease of 41.1 points or 0.87%. The stock has been on a downward trend, having underperformed its sector by 1.01% today and experiencing a consecutive fall for the last eight days, resulting in a total decline of 6.95% during this period. Over the past year, the stock has generated a return of -30.75%, while its profits have decreased by 9.4%. Despite high management efficiency indicated by a return on equity (ROE) of 35.83% and a low debt-to-equity ratio, the stock is trading at a premium compared to its peers, which may be contributing to its recent price decline.
In the broader market context, Sanofi India's short-term performance has been notably worse than the benchmark, with a 1-week return of -6.09% compared to the Sensex's -2.18%. This underperformance is further highlighted by the stock's long-term struggles, including a -22.80% return year-to-date and a -30.75% return over the past year, which contrasts sharply with the Sensex's positive 2.85% return in the same timeframe. The company's flat results in recent quarters, including significant declines in net sales and profit before tax, suggest ongoing challenges that may deter investor confidence, contributing to the stock's falling price.