Should You Buy, Sell or Hold Pfizer Stock After a Lukewarm Q4?

Core Insights - Pfizer's fourth-quarter results exceeded earnings and sales estimates, but total revenues declined by 3% operationally due to a 40% drop in COVID-19 product revenues [2][10] - The company reaffirmed its 2026 outlook, which anticipates lower revenues and earnings per share due to the decline in COVID product sales and upcoming patent expirations [12][13] Financial Performance - Pfizer reported a 5% year-over-year increase in earnings, despite a significant decline in revenues from COVID-19 products [2] - Total revenues for 2026 are projected to be between $59.5 billion and $62.5 billion, down from $62.6 billion in 2025 [12] - Adjusted earnings per share for 2026 are expected to be in the range of $2.80 to $3.00, a decrease from $3.22 in 2025 [13] Product Portfolio and Pipeline - Pfizer's oncology segment, which accounts for approximately 27% of total revenues, saw an 8% revenue growth in 2025, driven by key drugs [7] - The company is expanding its obesity portfolio with the acquisition of Metsera, which added a new investigational drug, PF'3944, showing promising results in a phase IIb study [3][9] - Revenues from non-COVID products increased by 6% operationally in 2025, with recently launched and acquired products generating $10.2 billion [8] Market Challenges - Sales of COVID products, Comirnaty and Paxlovid, have significantly declined, with projections of around $5 billion in 2026, down from $6.7 billion in 2025 [15][14] - Pfizer anticipates a revenue impact of approximately $1.5 billion due to loss of exclusivity for several key products between 2026 and 2030 [16] - The redesign of Medicare Part D under the Inflation Reduction Act is expected to continue negatively affecting revenues in 2026 [17] Stock Performance and Valuation - Pfizer's stock has underperformed compared to the industry and the S&P 500, with a 5.2% increase over the past year [18] - The stock is currently trading at a price/earnings ratio of 9.20, below the industry average of 18.76 and its five-year mean of 10.24 [21] - Analysts have revised the consensus estimate for 2026 earnings down from $2.99 to $2.98 per share over the past month [24]