ORLY vs RPM: Correlation
How closely do O'Reilly Automotive (ORLY) and RPM International Inc. (RPM) trade together? Their weekly returns over three years give a correlation of 0.36, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ORLY and RPM?
Over the past 3 years, ORLY and RPM moved with a correlation of 0.36, which is moderate. The relationship has been stable: the 1-year correlation (0.31) sits close to the 3-year figure. Over 5 years the correlation is 0.39, and the annualized covariance of weekly returns is 177.8 %².
Within ORLY's tracked universe of 29 assets, RPM comes in at #13 by 3-year correlation. Their 12-month results are close: -15.6% for ORLY against -14.3% for RPM.
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.
ORLY vs RPM: side by side
| ORLY (O'Reilly Automotive) | RPM (RPM International Inc.) | |
|---|---|---|
| 1-year return | -15.6% | -14.3% |
| 5-year return | +120.8% | +38.7% |
| Volatility (ann.) | 19.8% | 25.0% |
| Beta vs S&P 500 | 0.20 | 0.85 |
| Max drawdown (3Y) | -23.3% | -32.0% |
| Market cap | $71.1B | $13.5B |
| P/E (trailing) | 28.4 | 20.7 |
| Dividend yield | 0.00% | 1.99% |
| Sector / category | Consumer Discretionary | US Listed |
Year-by-year returns
| Year | ORLY | RPM |
|---|---|---|
| 2022 | +19.5% | -1.7% |
| 2023 | +12.6% | +16.8% |
| 2024 | +24.8% | +12.1% |
| 2025 | +15.4% | -13.9% |
| 2026 | -3.7% | +3.2% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ORLY and RPM good diversifiers for each other?
Reasonably. At 0.36, ORLY and RPM keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between ORLY and RPM?
As of 2026-08-27, the correlation of weekly returns between ORLY and RPM is 0.36 over 3 years, 0.31 over 1 year and 0.39 over 5 years.
Is RPM a good diversifier for ORLY?
Reasonably. At 0.36, ORLY and RPM keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.36 mean?
A reading of 0.36 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/orly-vs-rpm.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/orly-vs-rpm/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: ORLY correlations · RPM correlations
