GPC vs ORLY: Correlation
Genuine Parts Company (GPC) and O'Reilly Automotive (ORLY) show a moderate relationship: their 3-year correlation of weekly returns is 0.42.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are GPC and ORLY?
Across a 3-year window, the weekly returns of GPC and ORLY correlate at 0.42, moderate. The relationship has been stable: the 1-year correlation (0.44) sits close to the 3-year figure. Stretching to 5 years gives 0.51, with an annualized covariance of 268.9 %².
Within GPC's tracked universe of 36 assets, ORLY comes in at #21 by 3-year correlation. Correlation aside, the last 12 months split them widely, with GPC ahead by 16.9 points (+1.3% versus -15.6%). On a rolling one-year basis the correlation drifted between 0.36 and 0.70, a moderate band. Risk is not evenly split, since GPC carries 1.6 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.
GPC vs ORLY: side by side
| GPC (Genuine Parts Company) | ORLY (O'Reilly Automotive) | |
|---|---|---|
| 1-year return | +1.3% | -15.6% |
| 5-year return | +27.6% | +120.8% |
| Volatility (ann.) | 31.9% | 19.8% |
| Beta vs S&P 500 | 0.66 | 0.20 |
| Max drawdown (3Y) | -39.7% | -23.3% |
| Market cap | $18.8B | $71.1B |
| P/E (trailing) | 546.8 | 28.4 |
| Dividend yield | 3.00% | 0.00% |
| Sector / category | Consumer Discretionary | Consumer Discretionary |
Year-by-year returns
| Year | GPC | ORLY |
|---|---|---|
| 2022 | +26.8% | +19.5% |
| 2023 | -18.1% | +12.6% |
| 2024 | -13.2% | +24.8% |
| 2025 | +8.7% | +15.4% |
| 2026 | +13.4% | -3.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are GPC and ORLY good diversifiers for each other?
A fair diversifier. At 0.42, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between GPC and ORLY?
The GPC/ORLY correlation stands at 0.42 on a 3-year window (1 year: 0.44, 5 years: 0.51), computed from weekly returns as of 2026-08-27.
Is ORLY a good diversifier for GPC?
A fair diversifier. At 0.42, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.42 mean?
A reading of 0.42 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/gpc-vs-orly.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/gpc-vs-orly/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: GPC correlations · ORLY correlations
