EP vs RUSHB: Correlation
Measured on weekly returns over the past three years, Empire Petroleum Corporation (EP) and Rush Enterprises, Inc. (RUSHB) carry a correlation of 0.39, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are EP and RUSHB?
On 3 years of weekly data the EP/RUSHB correlation comes out at 0.39, moderate. Recent behaviour matches the longer record: 0.33 over 1 year against 0.39 over 3. The 5-year figure is 0.24, and annualized covariance runs at 797.6 %².
In EP's tracked universe of 10 assets, RUSHB sits right near the top at #3. Correlation aside, the last 12 months split them widely, with RUSHB ahead by 64.5 points (-32.9% versus +31.6%). Note the risk asymmetry: EP runs 2.2 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.
EP vs RUSHB: side by side
| EP (Empire Petroleum Corporation) | RUSHB (Rush Enterprises, Inc.) | |
|---|---|---|
| 1-year return | -32.9% | +31.6% |
| 5-year return | -46.4% | +185.6% |
| Volatility (ann.) | 67.0% | 30.8% |
| Beta vs S&P 500 | 1.00 | 0.88 |
| Max drawdown (3Y) | -77.9% | -28.5% |
| Market cap | $0.1B | $9.0B |
| P/E (trailing) | – | 23.1 |
| Dividend yield | 0.00% | 0.99% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | EP | RUSHB |
|---|---|---|
| 2022 | +1.9% | +5.9% |
| 2023 | -10.7% | +43.4% |
| 2024 | -30.8% | +4.3% |
| 2025 | -60.0% | +4.8% |
| 2026 | +7.9% | +38.0% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are EP and RUSHB good diversifiers for each other?
Reasonably. At 0.39, EP and RUSHB keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between EP and RUSHB?
Using weekly returns as of 2026-08-27: 0.39 over 3 years, with 0.33 over the last year and 0.24 over 5 years.
Is RUSHB a good diversifier for EP?
Reasonably. At 0.39, EP and RUSHB keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.39 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/ep-vs-rushb.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/ep-vs-rushb/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: EP correlations · RUSHB correlations
