Pfizer stock dips as U.S. vaccine policy fight rattles demand outlook
New York, Jan 15, 2026, 11:16 EST — Regular session. Pfizer Inc. shares fell 0.6% to $25.42 in late-morning trading on Thursday, extending a choppy start to the year for the drugmaker’s stock. The stock has struggled to find a clear driver since Pfizer warned in December that 2026 would likely start “bumpy,” with lower COVID-related sales, price cuts tied to a U.S. government deal and key patent expirations looming. Loss of exclusivity is shorthand for patents ending, which can open the door to cheaper rivals. (Reuters) The political noise around vaccines is back in focus. Sanofi Chief Executive Paul