CNM vs EXP: Correlation
Measured on weekly returns over the past three years, Core & Main, Inc. (CNM) and Eagle Materials Inc (EXP) carry a correlation of 0.55, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CNM and EXP?
Over the past 3 years, CNM and EXP moved with a correlation of 0.55, which is moderate. The relationship has been stable: the 1-year correlation (0.53) sits close to the 3-year figure. Over 5 years the correlation is 0.55, and the annualized covariance of weekly returns is 762.5 %².
Among the 17 assets we track against CNM, EXP ranks #5 by 3-year correlation. Correlation aside, the last 12 months split them widely, with EXP ahead by 17.8 points (-33.5% versus -15.7%).
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.
CNM vs EXP: side by side
| CNM (Core & Main, Inc.) | EXP (Eagle Materials Inc) | |
|---|---|---|
| 1-year return | -33.5% | -15.7% |
| 5-year return | +63.1% | +29.5% |
| Volatility (ann.) | 39.7% | 34.8% |
| Beta vs S&P 500 | 1.19 | 1.21 |
| Max drawdown (3Y) | -38.7% | -44.7% |
| Market cap | $8.5B | $6.1B |
| P/E (trailing) | 18.4 | 15.6 |
| Dividend yield | 0.00% | 0.50% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | CNM | EXP |
|---|---|---|
| 2022 | -36.4% | -19.6% |
| 2023 | +109.3% | +53.6% |
| 2024 | +26.0% | +22.1% |
| 2025 | +2.1% | -15.9% |
| 2026 | -15.8% | -4.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CNM and EXP good diversifiers for each other?
To a limited degree. At 0.55 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
FAQ
What is the correlation between CNM and EXP?
The CNM/EXP correlation stands at 0.55 on a 3-year window (1 year: 0.53, 5 years: 0.55), computed from weekly returns as of 2026-08-27.
Is EXP a good diversifier for CNM?
To a limited degree. At 0.55 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
What does a correlation of 0.55 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/cnm-vs-exp.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/cnm-vs-exp/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: CNM correlations · EXP correlations
