Merck & Co.MRK
NYSE · USA · Segment 2 of 8 in the Medicine, pharma & life science value chain: Big pharma
American pharmaceutical group with strengths in oncology (Keytruda), vaccines and animal health.
Big pharma: Large, diversified pharmaceutical groups with broad portfolios across therapeutic areas.
Key metrics
Market cap
$310B
Price
$123.75
Today
−1.1%
Return YTD
+18.8%
Return 1Y
+49.4%
P/E
34.7
P/S
4.7
P/B
6.8
Data as of 2026-07-10 · updates daily after U.S. close
Theme exposure
In the value chain
Products & services
- Oncology (Keytruda)
- Vaccines
- Animal health
Competitors
- Bristol Myers Squibb
- Pfizer
- AstraZeneca
Risks
- Dependence on Keytruda
- Patent cliff (2028)
Same segment: Big pharma
See where Merck & Co. sits in the full Medicine, pharma & life science map — every segment from upstream suppliers to end markets, with daily metrics.Open the Life science value chain →