MLM vs OC: Correlation
How closely do Martin Marietta Materials (MLM) and Owens Corning Inc (OC) trade together? Their weekly returns over three years give a correlation of 0.61, which is strong.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are MLM and OC?
Over the past 3 years, MLM and OC moved with a correlation of 0.61, which is strong. The relationship has been stable: the 1-year correlation (0.56) sits close to the 3-year figure. Over 5 years the correlation is 0.60, and the annualized covariance of weekly returns is 511.8 %².
Among the 36 assets we track against MLM, OC ranks #9 by 3-year correlation. On 12-month performance OC holds a 10.2-point edge, -13.8% against -3.6%.
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.
MLM vs OC: side by side
| MLM (Martin Marietta Materials) | OC (Owens Corning Inc) | |
|---|---|---|
| 1-year return | -13.8% | -3.6% |
| 5-year return | +42.4% | +60.3% |
| Volatility (ann.) | 23.9% | 35.1% |
| Beta vs S&P 500 | 0.85 | 1.41 |
| Max drawdown (3Y) | -26.8% | -52.5% |
| Market cap | $37.5B | $11.4B |
| P/E (trailing) | 34.4 | – |
| Dividend yield | 0.62% | 2.10% |
| Sector / category | Materials | US Listed |
Year-by-year returns
| Year | MLM | OC |
|---|---|---|
| 2022 | -22.7% | -4.2% |
| 2023 | +48.6% | +77.2% |
| 2024 | +4.1% | +16.6% |
| 2025 | +21.3% | -33.0% |
| 2026 | -14.9% | +30.9% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are MLM and OC good diversifiers for each other?
Somewhat, no more. With 0.61 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between MLM and OC?
As of 2026-08-27, the correlation of weekly returns between MLM and OC is 0.61 over 3 years, 0.56 over 1 year and 0.60 over 5 years.
Is OC a good diversifier for MLM?
Somewhat, no more. With 0.61 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.61 mean?
A reading of 0.61 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
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Related comparisons
Hubs: MLM correlations · OC correlations
