FAST vs ORLY: Correlation
How closely do Fastenal (FAST) and O'Reilly Automotive (ORLY) 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 FAST and ORLY?
Over the past 3 years, FAST and ORLY 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 0.37, and the annualized covariance of weekly returns is 172.5 %².
By 3-year correlation, ORLY places #22 of the 33 assets tracked against FAST. Correlation aside, the last 12 months split them widely, with FAST ahead by 19.7 points (+4.1% versus -15.6%). The rolling one-year correlation moved between 0.09 and 0.54 over the past three years, a moderate range.
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.
FAST vs ORLY: side by side
| FAST (Fastenal) | ORLY (O'Reilly Automotive) | |
|---|---|---|
| 1-year return | +4.1% | -15.6% |
| 5-year return | +105.5% | +120.8% |
| Volatility (ann.) | 24.0% | 19.8% |
| Beta vs S&P 500 | 0.63 | 0.20 |
| Max drawdown (3Y) | -21.9% | -23.3% |
| Market cap | $58.7B | $71.1B |
| P/E (trailing) | 43.7 | 28.4 |
| Dividend yield | 1.80% | 0.00% |
| Sector / category | Industrials | Consumer Discretionary |
Year-by-year returns
| Year | FAST | ORLY |
|---|---|---|
| 2022 | -24.3% | +19.5% |
| 2023 | +41.3% | +12.6% |
| 2024 | +13.5% | +24.8% |
| 2025 | +14.0% | +15.4% |
| 2026 | +29.5% | -3.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are FAST and ORLY good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.36 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between FAST and ORLY?
Using weekly returns as of 2026-08-27: 0.36 over 3 years, with 0.31 over the last year and 0.37 over 5 years.
Is ORLY a good diversifier for FAST?
Yes, to a useful degree: a correlation of 0.36 leaves real independence between the two, which historically damped combined 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/fast-vs-orly.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/fast-vs-orly/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: FAST correlations · ORLY correlations
