AMCI vs CPIX: Correlation
How closely do AMC Robotics Corporation (AMCI) and Cumberland Pharmaceuticals Inc. (CPIX) trade together? Their weekly returns over three years give a correlation of 0.33, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are AMCI and CPIX?
Over the past 3 years, AMCI and CPIX moved with a correlation of 0.33, which is moderate. Lately the two have moved closer together, with the 1-year correlation at 0.57 versus 0.33 over 3 years. Over 5 years the correlation is n/a, and the annualized covariance of weekly returns is 6477.6 %².
Within AMCI's tracked universe of 20 assets, CPIX comes in at #6 by 3-year correlation. The last year tells two different stories: CPIX led by 294.3 percentage points, -66.2% for AMCI against +228.1% for CPIX.
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.
AMCI vs CPIX: side by side
| AMCI (AMC Robotics Corporation) | CPIX (Cumberland Pharmaceuticals Inc.) | |
|---|---|---|
| 1-year return | -66.2% | +228.1% |
| 5-year return | n/a | +295.6% |
| Volatility (ann.) | 168.1% | 117.9% |
| Beta vs S&P 500 | 0.40 | 0.07 |
| Max drawdown (3Y) | -87.8% | -71.9% |
| Market cap | $0.1B | $0.1B |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | AMCI | CPIX |
|---|---|---|
| 2022 | – | -51.8% |
| 2023 | – | -20.4% |
| 2024 | +6.4% | +32.4% |
| 2025 | -30.6% | +67.9% |
| 2026 | -48.8% | +180.3% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are AMCI and CPIX good diversifiers for each other?
A fair diversifier. At 0.33, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between AMCI and CPIX?
Using weekly returns as of 2026-08-27: 0.33 over 3 years, with 0.57 over the last year and n/a over 5 years.
Is CPIX a good diversifier for AMCI?
A fair diversifier. At 0.33, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.33 mean?
On the −1 to +1 scale, 0.33 describes how much the two returns move together: +1 is lockstep, 0 is independence, negative values mean opposite directions. It says nothing about which performed better.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/amci-vs-cpix.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/amci-vs-cpix/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: AMCI correlations · CPIX correlations
