AMGN vs MRK: Correlation
Amgen (AMGN) and Merck & Co. (MRK) show a moderate relationship: their 3-year correlation of weekly returns is 0.50.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are AMGN and MRK?
On 3 years of weekly data the AMGN/MRK correlation comes out at 0.50, moderate. The past 12 months show a tighter link (0.66) than the 3-year average (0.50). The 5-year figure is 0.44, and annualized covariance runs at 364.2 %².
Among the 31 assets we track against AMGN, MRK ranks #4 by 3-year correlation. Correlation aside, the last 12 months split them widely, with MRK ahead by 27.8 points (+56.0% versus +83.8%). On a rolling one-year basis the correlation drifted between 0.21 and 0.69, a moderate band.
How is this computed?
Pearson correlation on weekly returns: ρ(A,B) = cov(rA, rB) / (σA · σB), over windows of 52, 156 and 260 weeks. Covariance is annualized (×52) and expressed in %². Full definitions on the methodology page.
AMGN vs MRK: side by side
| AMGN (Amgen) | MRK (Merck & Co.) | |
|---|---|---|
| 1-year return | +56.0% | +83.8% |
| 5-year return | +127.8% | +128.5% |
| Volatility (ann.) | 26.3% | 27.9% |
| Beta vs S&P 500 | 0.34 | 0.28 |
| Max drawdown (3Y) | -22.7% | -43.4% |
| Market cap | $236.3B | $368.9B |
| P/E (trailing) | 27.3 | 121.6 |
| Dividend yield | 2.23% | 2.17% |
| Sector / category | Health Care | Health Care |
Year-by-year returns
| Year | AMGN | MRK |
|---|---|---|
| 2022 | +20.4% | +49.4% |
| 2023 | +13.5% | +1.0% |
| 2024 | -6.8% | -6.3% |
| 2025 | +29.7% | +9.8% |
| 2026 | +36.2% | +44.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are AMGN and MRK good diversifiers for each other?
Only partially. A correlation of 0.50 means AMGN and MRK share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
FAQ
What is the correlation between AMGN and MRK?
Using weekly returns as of 2026-08-27: 0.50 over 3 years, with 0.66 over the last year and 0.44 over 5 years.
Is MRK a good diversifier for AMGN?
Only partially. A correlation of 0.50 means AMGN and MRK share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.50 mean?
A reading of 0.50 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/amgn-vs-mrk.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/amgn-vs-mrk/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: AMGN correlations · MRK correlations
