DORM vs MD: Correlation
How closely do Dorman Products, Inc. (DORM) and Pediatrix Medical Group, Inc. (MD) trade together? Their weekly returns over three years give a correlation of 0.44, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are DORM and MD?
Across a 3-year window, the weekly returns of DORM and MD correlate at 0.44, moderate. The link has loosened recently: the 1-year correlation (0.32) runs below the 3-year figure (0.44). Stretching to 5 years gives 0.40, with an annualized covariance of 636.8 %².
Among the 14 assets we track against DORM, MD ranks #8 by 3-year correlation. Correlation aside, the last 12 months split them widely, with MD ahead by 77.6 points (-21.6% versus +56.0%).
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 MD: side by side
| DORM (Dorman Products, Inc.) | MD (Pediatrix Medical Group, Inc.) | |
|---|---|---|
| 1-year return | -21.6% | +56.0% |
| 5-year return | +34.2% | -23.8% |
| Volatility (ann.) | 31.5% | 46.2% |
| Beta vs S&P 500 | 0.78 | 0.33 |
| Max drawdown (3Y) | -39.6% | -52.8% |
| Market cap | $3.8B | $2.2B |
| P/E (trailing) | 17.9 | 12.9 |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | DORM | MD |
|---|---|---|
| 2022 | -28.4% | -45.4% |
| 2023 | +3.1% | -37.4% |
| 2024 | +55.3% | +41.1% |
| 2025 | -4.9% | +63.0% |
| 2026 | +4.1% | +25.3% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are DORM and MD good diversifiers for each other?
Reasonably. At 0.44, DORM and MD keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between DORM and MD?
Using weekly returns as of 2026-08-27: 0.44 over 3 years, with 0.32 over the last year and 0.40 over 5 years.
Is MD a good diversifier for DORM?
Reasonably. At 0.44, DORM and MD keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.44 mean?
On the −1 to +1 scale, 0.44 describes how much the two returns move together: +1 is lockstep, 0 is independence, negative values mean opposite directions. It says nothing about which performed better.
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Related comparisons
Hubs: DORM correlations · MD correlations
