MLM vs VMC: Correlation
Measured on weekly returns over the past three years, Martin Marietta Materials (MLM) and Vulcan Materials Company (VMC) carry a correlation of 0.90, a very strong link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are MLM and VMC?
On 3 years of weekly data the MLM/VMC correlation comes out at 0.90, very strong, meaning they move nearly in lockstep. Recent behaviour matches the longer record: 0.89 over 1 year against 0.90 over 3. The 5-year figure is 0.91, and annualized covariance runs at 543.8 %².
In MLM's tracked universe of 36 assets, VMC sits right near the top at #1. Over the last 12 months VMC came out ahead by 8.6 percentage points (-13.8% against -5.2%). The link looks structural: the rolling one-year correlation barely moved, holding between 0.81 and 0.95.
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 VMC: side by side
| MLM (Martin Marietta Materials) | VMC (Vulcan Materials Company) | |
|---|---|---|
| 1-year return | -13.8% | -5.2% |
| 5-year return | +42.4% | +53.2% |
| Volatility (ann.) | 23.9% | 25.2% |
| Beta vs S&P 500 | 0.85 | 0.82 |
| Max drawdown (3Y) | -26.8% | -24.4% |
| Market cap | $37.5B | $35.5B |
| P/E (trailing) | 34.4 | 32.3 |
| Dividend yield | 0.62% | 0.74% |
| Sector / category | Materials | Materials |
Year-by-year returns
| Year | MLM | VMC |
|---|---|---|
| 2022 | -22.7% | -14.9% |
| 2023 | +48.6% | +30.8% |
| 2024 | +4.1% | +14.1% |
| 2025 | +21.3% | +11.7% |
| 2026 | -14.9% | -3.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are MLM and VMC good diversifiers for each other?
Not really. At 0.90, the two trade almost as one position, and owning both buys little extra protection.
FAQ
What is the correlation between MLM and VMC?
As of 2026-08-27, the correlation of weekly returns between MLM and VMC is 0.90 over 3 years, 0.89 over 1 year and 0.91 over 5 years.
Is VMC a good diversifier for MLM?
Not really. At 0.90, the two trade almost as one position, and owning both buys little extra protection.
What does a correlation of 0.90 mean?
A reading of 0.90 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/mlm-vs-vmc.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/mlm-vs-vmc/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: MLM correlations · VMC correlations
