Merck vs Pfizer: revenue, profit, margins and growth compared
Merck brought in $65B of revenue in fiscal 2025, Pfizer $62.6B in fiscal 2025. Revenue changed by +1.3% at Merck and -1.6% at Pfizer on the year before, so Merck grew faster. Merck kept 28.1% of its revenue as net profit, Pfizer 12.4%. Free cash flow was $12.4B at Merck and $9.1B at Pfizer.
Fiscal years as each company reports them; the two may end in different months.
Questions about Merck and Pfizer
Which is bigger by revenue, Merck or Pfizer?
Merck is bigger by revenue: $65B in fiscal 2025, against $62.6B for Pfizer in fiscal 2025.
Which keeps more of its revenue as profit, Merck or Pfizer?
Merck had a net margin of 28.1% in fiscal 2025; Pfizer had 12.4% in fiscal 2025.
Which grew revenue faster, Merck or Pfizer?
In their latest fiscal years revenue changed by +1.3% at Merck and -1.6% at Pfizer.
Where do these numbers come from?
From the annual reports each company files with the SEC (10-K, or 20-F and 40-F for foreign companies), read from their XBRL data. Margins and growth are simple arithmetic on those figures. Nothing here is a recommendation.