Pfizer's stock is experiencing a bullish movement of 4.46% today, driven by the company's Q4 2025 earnings report, which showed earnings of $0.66 per share, beating estimates by 16.81%, and revenues of $17.56 billion, exceeding expectations by 4.26%. This marks the fourth consecutive quarter of beating EPS estimates and indicates strong operational revenue growth in its non-COVID portfolio. Pfizer has also reaffirmed its 2026 financial guidance and plans for significant pivotal study starts, which has positively influenced investor sentiment.