EXP vs OC: Correlation
How closely do Eagle Materials Inc (EXP) and Owens Corning Inc (OC) trade together? Their weekly returns over three years give a correlation of 0.71, which is strong.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are EXP and OC?
Over the past 3 years, EXP and OC moved with a correlation of 0.71, which is strong. Recent behaviour matches the longer record: 0.66 over 1 year against 0.71 over 3. Over 5 years the correlation is 0.69, and the annualized covariance of weekly returns is 861.4 %².
By 3-year correlation, OC places #7 of the 24 assets tracked against EXP. On 12-month performance OC holds a 12.1-point edge, -15.7% 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.
EXP vs OC: side by side
| EXP (Eagle Materials Inc) | OC (Owens Corning Inc) | |
|---|---|---|
| 1-year return | -15.7% | -3.6% |
| 5-year return | +29.5% | +60.3% |
| Volatility (ann.) | 34.8% | 35.1% |
| Beta vs S&P 500 | 1.21 | 1.41 |
| Max drawdown (3Y) | -44.7% | -52.5% |
| Market cap | $6.1B | $11.4B |
| P/E (trailing) | 15.6 | – |
| Dividend yield | 0.50% | 2.10% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | EXP | OC |
|---|---|---|
| 2022 | -19.6% | -4.2% |
| 2023 | +53.6% | +77.2% |
| 2024 | +22.1% | +16.6% |
| 2025 | -15.9% | -33.0% |
| 2026 | -4.1% | +30.9% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are EXP and OC good diversifiers for each other?
Somewhat, no more. With 0.71 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between EXP and OC?
As of 2026-08-27, the correlation of weekly returns between EXP and OC is 0.71 over 3 years, 0.66 over 1 year and 0.69 over 5 years.
Is OC a good diversifier for EXP?
Somewhat, no more. With 0.71 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.71 mean?
A reading of 0.71 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/exp-vs-oc.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/exp-vs-oc/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: EXP correlations · OC correlations
