ACFN vs ARRY: Correlation
How closely do Acorn Energy, Inc. (ACFN) and Array Technologies, Inc. (ARRY) trade together? Their weekly returns over three years give a correlation of -0.23, which is negative.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ACFN and ARRY?
Across a 3-year window, the weekly returns of ACFN and ARRY correlate at -0.23, negative, meaning they tend to move in opposite directions. Recent behaviour matches the longer record: -0.24 over 1 year against -0.23 over 3. Stretching to 5 years gives -0.10, with an annualized covariance of -1341.3 %².
Among the 14 assets we track against ACFN, ARRY sits near the bottom by co-movement, at rank #11. Correlation aside, the last 12 months split them widely, with ACFN ahead by 21.3 points (-27.0% versus -48.3%).
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 ARRY: side by side
| ACFN (Acorn Energy, Inc.) | ARRY (Array Technologies, Inc.) | |
|---|---|---|
| 1-year return | -27.0% | -48.3% |
| 5-year return | +122.5% | -75.3% |
| Volatility (ann.) | 81.3% | 73.3% |
| Beta vs S&P 500 | 0.68 | 1.37 |
| Max drawdown (3Y) | -58.1% | -84.9% |
| Market cap | $0.1B | $0.7B |
| P/E (trailing) | 33.9 | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ACFN | ARRY |
|---|---|---|
| 2022 | -44.4% | +23.2% |
| 2023 | +8.8% | -13.1% |
| 2024 | +193.8% | -64.0% |
| 2025 | -15.6% | +52.6% |
| 2026 | +36.8% | -49.3% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ACFN and ARRY good diversifiers for each other?
Yes. With a correlation of -0.23, ACFN and ARRY have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
FAQ
What is the correlation between ACFN and ARRY?
Using weekly returns as of 2026-08-27: -0.23 over 3 years, with -0.24 over the last year and -0.10 over 5 years.
Is ARRY a good diversifier for ACFN?
Yes. With a correlation of -0.23, ACFN and ARRY have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
What does a correlation of -0.23 mean?
On the −1 to +1 scale, -0.23 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/acfn-vs-arry.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/acfn-vs-arry/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: ACFN correlations · ARRY correlations
