AROC vs SEI: Correlation
How closely do Archrock, Inc. (AROC) and Solaris Energy Infrastructure, Inc. (SEI) trade together? Their weekly returns over three years give a correlation of 0.46, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are AROC and SEI?
On 3 years of weekly data the AROC/SEI correlation comes out at 0.46, moderate. Lately the two have drifted apart, with the 1-year correlation at 0.17 versus 0.46 over 3 years. The 5-year figure is 0.50, and annualized covariance runs at 1207.4 %².
By 3-year correlation, SEI places #11 of the 17 assets tracked against AROC. Correlation aside, the last 12 months split them widely, with SEI ahead by 45.8 points (+34.4% versus +80.2%). Risk is not evenly split, since SEI carries 2.0 times the volatility of the other side.
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.
AROC vs SEI: side by side
| AROC (Archrock, Inc.) | SEI (Solaris Energy Infrastructure, Inc.) | |
|---|---|---|
| 1-year return | +34.4% | +80.2% |
| 5-year return | +420.1% | +759.3% |
| Volatility (ann.) | 36.3% | 72.5% |
| Beta vs S&P 500 | 0.87 | 1.79 |
| Max drawdown (3Y) | -30.3% | -55.4% |
| Market cap | $5.6B | $5.3B |
| P/E (trailing) | 17.0 | 66.1 |
| Dividend yield | 2.78% | 0.93% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | AROC | SEI |
|---|---|---|
| 2022 | +28.8% | +57.5% |
| 2023 | +81.0% | -15.7% |
| 2024 | +67.6% | +277.7% |
| 2025 | +8.0% | +62.3% |
| 2026 | +25.6% | +15.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are AROC and SEI good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.46 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between AROC and SEI?
As of 2026-08-27, the correlation of weekly returns between AROC and SEI is 0.46 over 3 years, 0.17 over 1 year and 0.50 over 5 years.
Is SEI a good diversifier for AROC?
Yes, to a useful degree: a correlation of 0.46 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.46 mean?
A reading of 0.46 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/aroc-vs-sei.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/aroc-vs-sei/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: AROC correlations · SEI correlations
