Why is Pfizer falling/rising?

As of 13-Oct, Pfizer Ltd. is experiencing a price increase, currently at 5,509.00, reflecting a rise of 180.85 or 3.39%. The stock has outperformed its sector today by 3.54% and has shown a consecutive gain over the last three days, accumulating a total return of 6.24% during this period. Additionally, Pfizer is trading above its 5-day, 20-day, 50-day, 100-day, and 200-day moving averages, indicating a strong upward trend. Despite a decline in delivery volume by 43.49% against the 5-day average, the company boasts a high dividend yield of 3.1% and strong management efficiency, evidenced by a high return on equity (ROE) of 18.22% and a low debt-to-equity ratio.
In the broader market context, Pfizer's short-term performance over the past week shows a return of 5.52%, significantly outperforming the Sensex, which only increased by 0.66%. However, over the year, Pfizer's performance has lagged behind the benchmark, with a decline of 4.03% compared to the Sensex's gain of 1.16%. This mixed performance suggests that while Pfizer is currently benefiting from positive short-term trends and strong operational metrics, its longer-term trajectory remains less favorable compared to the broader market.