MRK vs ZTS
Merck (MRK) and Zoetis (ZTS) compared side by side. Merck (MRK) is larger, with a market cap of $358.4B versus $33.5B for Zoetis, about 10.7 times the size. On trailing earnings, ZTS is cheaper at 13.3x versus 117.2x for MRK.
Head to head
| Metric | MRK | ZTS |
|---|---|---|
| Market cap | $358.4B | $33.5B |
| P/E (TTM) | 117.2x | 13.3x |
| Forward P/E | 15.7x | 12.6x |
| Revenue (TTM) | $66.6B | $9.5B |
| Revenue growth | 5.1% | -0.2% |
| Gross margin | 75.9% | 71.7% |
| Operating margin | -0.2% | 40.7% |
| Free cash flow | $16.1B | $2.3B |
| Dividend yield | 2.34% | 2.62% |
| 1-year return | +71.5% | -43.6% |
| 5-year return (annual) | +15.8% | -16.3% |
| Max drawdown | -69% | -70% |
| FI Handbook grade | C | B- |
Highlighted: the stronger figure on metrics where higher or lower is clearly better.
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MRK vs ZTS FAQ
Which is bigger, MRK or ZTS?
Merck (MRK) is larger, with a market cap of $358.4B versus $33.5B for Zoetis, about 10.7 times the size.
Is MRK or ZTS cheaper?
On trailing earnings, ZTS is cheaper at 13.3x versus 117.2x for MRK. A lower P/E can reflect slower expected growth, so compare growth and margins too.
Which stock performed better over the past year, MRK or ZTS?
MRK returned +71.5% over the past year including dividends, versus -43.6% for ZTS, through October 23, 2026.
Which pays a higher dividend, MRK or ZTS?
ZTS yields 2.62% versus 2.34% for MRK.