Unlike Johnson & Johnson the previous week, Pfizer Inc.’s* stock price traded up by about 1% in the premarket on its fourth-quarter and full-year 2023 results announcement. This accelerated through its conference call with Pfizer’s stock price initially opening up by about 2% in normal trading. But like J&J, within a few minutes of the market open, Pfizer’s stock headed into the red and closed down by nearly 2% compared with the NYSE Arca Pharmaceutical Index’s (DRG’s) modest loss for the day.
Stock Watch: Vaccines, Oncology Frame Q4 Contrasts Between Pfizer And GSK
The Battle Of The RSV Vaccines Is Only Part Of The Story
While attempting to move beyond post-pandemic unfavorable revenue comparisons, other unfavorable comparisons emerged at Pfizer.

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Supply chain disruption fears at the start of the COVID-19 pandemic caused drug over-ordering. Imminent tariffs on drugs may have had a similar effect on pharma sales in Q1 earnings season.