ACLS vs COR: Correlation
Axcelis Technologies, Inc. (ACLS) and Cencora (COR) show a negative relationship: their 3-year correlation of weekly returns is -0.30.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ACLS and COR?
Across a 3-year window, the weekly returns of ACLS and COR correlate at -0.30, negative, meaning they tend to move in opposite directions. Recent behaviour matches the longer record: -0.37 over 1 year against -0.30 over 3. Stretching to 5 years gives -0.13, with an annualized covariance of -339.3 %².
COR is close to the least connected end of ACLS's tracked universe, ranking #9 of 11. The last year tells two different stories: ACLS led by 38.0 percentage points, +49.4% for ACLS against +11.4% for COR. Note the risk asymmetry: ACLS runs 2.4 times the annualized volatility of the other leg, so equal-weighting the two is not an equal-risk position.
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.
ACLS vs COR: side by side
| ACLS (Axcelis Technologies, Inc.) | COR (Cencora) | |
|---|---|---|
| 1-year return | +49.4% | +11.4% |
| 5-year return | +140.5% | +188.6% |
| Volatility (ann.) | 51.6% | 21.9% |
| Beta vs S&P 500 | 1.57 | 0.08 |
| Max drawdown (3Y) | -78.0% | -32.4% |
| Market cap | $3.8B | $61.3B |
| P/E (trailing) | 40.4 | 24.3 |
| Dividend yield | 0.00% | 0.72% |
| Sector / category | US Listed | Health Care |
Year-by-year returns
| Year | ACLS | COR |
|---|---|---|
| 2022 | +6.4% | +26.3% |
| 2023 | +63.4% | +25.3% |
| 2024 | -46.1% | +10.4% |
| 2025 | +15.0% | +51.5% |
| 2026 | +52.4% | -4.3% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ACLS and COR good diversifiers for each other?
By historical standards, yes. A correlation of -0.30 means the two rarely move for the same reasons.
FAQ
What is the correlation between ACLS and COR?
Using weekly returns as of 2026-08-27: -0.30 over 3 years, with -0.37 over the last year and -0.13 over 5 years.
Is COR a good diversifier for ACLS?
By historical standards, yes. A correlation of -0.30 means the two rarely move for the same reasons.
What does a correlation of -0.30 mean?
A reading of -0.30 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
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Related comparisons
Hubs: ACLS correlations · COR correlations
