Why is Dr Reddy's Labs falling/rising?

As of 11-Jul, Dr Reddys Laboratories Ltd is experiencing a decline in its stock price, currently at 1,253.75, which reflects a decrease of 5.45 or 0.43%. The stock has been underperforming, having fallen consecutively for the last four days, resulting in a total drop of 4.16% during this period. Additionally, the stock's performance over the past week shows a decline of 3.93%, and it has underperformed the sector by 1.01% today. Despite having strong long-term fundamentals, including a low debt-to-equity ratio and a healthy return on equity, the stock has generated a negative return of 4.87% over the past year, indicating challenges in maintaining investor confidence.
In the broader market context, Dr Reddys Laboratories Ltd's recent performance contrasts with the benchmark, as it has underperformed the Sensex, which has seen a slight decline of only 1.12% over the past week. The stock's year-to-date performance is particularly concerning, with a drop of 9.69% compared to the Sensex's gain of 5.58%. This consistent underperformance against the benchmark over the last three years, coupled with a decrease in investor participation, as evidenced by a 13.4% drop in delivery volume, suggests that market sentiment is currently unfavorable for the stock.