DORM vs SMP: Correlation
How closely do Dorman Products, Inc. (DORM) and Standard Motor Products, Inc. (SMP) trade together? Their weekly returns over three years give a correlation of 0.60, which is strong.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are DORM and SMP?
Across a 3-year window, the weekly returns of DORM and SMP correlate at 0.60, strong. Lately the two have moved closer together, with the 1-year correlation at 0.80 versus 0.60 over 3 years. Stretching to 5 years gives 0.60, with an annualized covariance of 663.9 %².
Few assets follow DORM as closely as SMP, which ranks #3 of 14 tracked partners. Correlation aside, the last 12 months split them widely, with SMP ahead by 18.9 points (-21.6% versus -2.7%).
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.
DORM vs SMP: side by side
| DORM (Dorman Products, Inc.) | SMP (Standard Motor Products, Inc.) | |
|---|---|---|
| 1-year return | -21.6% | -2.7% |
| 5-year return | +34.2% | +1.1% |
| Volatility (ann.) | 31.5% | 35.3% |
| Beta vs S&P 500 | 0.78 | 0.75 |
| Max drawdown (3Y) | -39.6% | -44.8% |
| Market cap | $3.8B | $0.8B |
| P/E (trailing) | 17.9 | 9.4 |
| Dividend yield | 0.00% | 3.50% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | DORM | SMP |
|---|---|---|
| 2022 | -28.4% | -31.8% |
| 2023 | +3.1% | +18.0% |
| 2024 | +55.3% | -19.4% |
| 2025 | -4.9% | +23.4% |
| 2026 | +4.1% | +3.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are DORM and SMP good diversifiers for each other?
Somewhat, no more. With 0.60 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between DORM and SMP?
The DORM/SMP correlation stands at 0.60 on a 3-year window (1 year: 0.80, 5 years: 0.60), computed from weekly returns as of 2026-08-27.
Is SMP a good diversifier for DORM?
Somewhat, no more. With 0.60 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.60 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/dorm-vs-smp.json
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Related comparisons
Hubs: DORM correlations · SMP correlations
