Why is Pfizer falling/rising?

As of 17-Jul, Pfizer Ltd. has seen a slight increase in its stock price, currently at 5,370.00, reflecting a change of 7.15 (0.13%) upward. Despite this minor uptick, the stock has underperformed its sector by 0.29% today, and its delivery volume has decreased by 14.21% compared to the 5-day average, indicating a decline in investor participation. Over the past week, the stock has dropped by 2.32%, and over the past month, it has decreased by 8.37%. However, on a year-to-date basis, Pfizer has shown a positive return of 2.20%, and its management efficiency is highlighted by a high return on equity (ROE) of 19.67% and a low debt-to-equity ratio, which are positive indicators for the company's financial health.
In the broader market context, Pfizer's recent performance contrasts with the Sensex, which has gained 0.83% over the past month. This underperformance relative to the benchmark may be contributing to the stock's price movement. While the stock has shown a solid year-over-year return of 7.29%, the significant drop in short-term performance suggests that investors may be cautious. The high dividend yield of 3.73% could attract some investors, but the overall market sentiment and declining trading volume may be overshadowing these positive aspects, leading to a mixed outlook for Pfizer's stock.