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Pharmaceuticals 21 January 2026 - 24 January 2026

Septerna Shares (SEPN) Surge 23% Following Positive SEP-479 Signal, Exceeding Analyst Predictions
Pfizer stock slips on ex-dividend day — what to watch ahead of Feb. 3 earnings

Pfizer stock slips on ex-dividend day — what to watch ahead of Feb. 3 earnings

Pfizer shares dropped roughly 1.9% to $25.62 Friday afternoon, underperforming the health-care sector as the stock went ex-dividend. The Health Care Select Sector SPDR Fund dipped about 0.5%, while the SPDR S&P 500 ETF Trust inched up around 0.1%. Merck slipped about 1%, and Moderna tumbled over 7%. Trading volume for Pfizer hit roughly 24.8 million shares.
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