ACFN vs HLLY: Correlation
Acorn Energy, Inc. (ACFN) and Holley Inc. (HLLY) show a negative relationship: their 3-year correlation of weekly returns is -0.26.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ACFN and HLLY?
Across a 3-year window, the weekly returns of ACFN and HLLY correlate at -0.26, negative, meaning they tend to move in opposite directions. The relationship has been stable: the 1-year correlation (-0.28) sits close to the 3-year figure. Stretching to 5 years gives -0.07, with an annualized covariance of -1258.8 %².
Among the 14 assets we track against ACFN, HLLY sits near the bottom by co-movement, at rank #13. Their 12-month results are close: -27.0% for ACFN against -25.4% for HLLY.
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.
ACFN vs HLLY: side by side
| ACFN (Acorn Energy, Inc.) | HLLY (Holley Inc.) | |
|---|---|---|
| 1-year return | -27.0% | -25.4% |
| 5-year return | +122.5% | -74.8% |
| Volatility (ann.) | 81.3% | 60.1% |
| Beta vs S&P 500 | 0.68 | 1.33 |
| Max drawdown (3Y) | -58.1% | -70.2% |
| Market cap | $0.1B | $0.4B |
| P/E (trailing) | 33.9 | 33.0 |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ACFN | HLLY |
|---|---|---|
| 2022 | -44.4% | -83.7% |
| 2023 | +8.8% | +129.7% |
| 2024 | +193.8% | -38.0% |
| 2025 | -15.6% | +36.8% |
| 2026 | +36.8% | -28.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ACFN and HLLY good diversifiers for each other?
Yes: at -0.26, the two have gone their own ways historically, which is what genuine diversification looks like.
FAQ
What is the correlation between ACFN and HLLY?
As of 2026-08-27, the correlation of weekly returns between ACFN and HLLY is -0.26 over 3 years, -0.28 over 1 year and -0.07 over 5 years.
Is HLLY a good diversifier for ACFN?
Yes: at -0.26, the two have gone their own ways historically, which is what genuine diversification looks like.
What does a correlation of -0.26 mean?
Correlation ranges from −1 to +1. Values near +1 mean two assets move together, near 0 that they move independently, and negative values that they tend to move in opposite directions. It measures co-movement, not performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/acfn-vs-hlly.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/acfn-vs-hlly/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: ACFN correlations · HLLY correlations
