OMCL vs PARR: Correlation
Omnicell, Inc. (OMCL) and Par Pacific Holdings, Inc. (PARR) show a negative relationship: their 3-year correlation of weekly returns is -0.21.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are OMCL and PARR?
Over the past 3 years, OMCL and PARR moved with a correlation of -0.21, which is negative, meaning they tend to move in opposite directions. The relationship has been stable: the 1-year correlation (-0.29) sits close to the 3-year figure. Over 5 years the correlation is -0.09, and the annualized covariance of weekly returns is -540.8 %².
Out of 12 assets tracked against OMCL, PARR lands near the bottom at #10. Their recent paths diverged sharply: over the last 12 months PARR outperformed by 125.0 percentage points (+0.5% for OMCL against +125.5% for PARR).
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.
OMCL vs PARR: side by side
| OMCL (Omnicell, Inc.) | PARR (Par Pacific Holdings, Inc.) | |
|---|---|---|
| 1-year return | +0.5% | +125.5% |
| 5-year return | -78.5% | +375.6% |
| Volatility (ann.) | 49.5% | 51.3% |
| Beta vs S&P 500 | 0.53 | 0.13 |
| Max drawdown (3Y) | -58.4% | -69.7% |
| Market cap | $1.5B | $3.9B |
| P/E (trailing) | 39.8 | 4.4 |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | OMCL | PARR |
|---|---|---|
| 2022 | -72.1% | +41.0% |
| 2023 | -25.4% | +56.4% |
| 2024 | +18.3% | -54.9% |
| 2025 | +1.8% | +114.4% |
| 2026 | -26.2% | +119.2% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are OMCL and PARR good diversifiers for each other?
Yes. With a correlation of -0.21, OMCL and PARR have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
FAQ
What is the correlation between OMCL and PARR?
Using weekly returns as of 2026-08-27: -0.21 over 3 years, with -0.29 over the last year and -0.09 over 5 years.
Is PARR a good diversifier for OMCL?
Yes. With a correlation of -0.21, OMCL and PARR have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
What does a correlation of -0.21 mean?
A reading of -0.21 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/omcl-vs-parr.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/omcl-vs-parr/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: OMCL correlations · PARR correlations
