BLDR vs EXP: Correlation
Measured on weekly returns over the past three years, Builders FirstSource (BLDR) and Eagle Materials Inc (EXP) carry a correlation of 0.71, a strong link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BLDR and EXP?
Over the past 3 years, BLDR and EXP moved with a correlation of 0.71, which is strong. Recent behaviour matches the longer record: 0.70 over 1 year against 0.71 over 3. Over 5 years the correlation is 0.72, and the annualized covariance of weekly returns is 1125.1 %².
By 3-year correlation, EXP places #14 of the 48 assets tracked against BLDR. The last year tells two different stories: EXP led by 36.9 percentage points, -52.6% for BLDR against -15.7% for EXP.
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.
BLDR vs EXP: side by side
| BLDR (Builders FirstSource) | EXP (Eagle Materials Inc) | |
|---|---|---|
| 1-year return | -52.6% | -15.7% |
| 5-year return | +25.8% | +29.5% |
| Volatility (ann.) | 45.6% | 34.8% |
| Beta vs S&P 500 | 1.36 | 1.21 |
| Max drawdown (3Y) | -68.7% | -44.7% |
| Market cap | $7.2B | $6.1B |
| P/E (trailing) | 74.7 | 15.6 |
| Dividend yield | 0.00% | 0.50% |
| Sector / category | Industrials | US Listed |
Year-by-year returns
| Year | BLDR | EXP |
|---|---|---|
| 2022 | -24.3% | -19.6% |
| 2023 | +157.3% | +53.6% |
| 2024 | -14.4% | +22.1% |
| 2025 | -28.0% | -15.9% |
| 2026 | -34.7% | -4.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BLDR and EXP 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 BLDR and EXP?
As of 2026-08-27, the correlation of weekly returns between BLDR and EXP is 0.71 over 3 years, 0.70 over 1 year and 0.72 over 5 years.
Is EXP a good diversifier for BLDR?
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/bldr-vs-exp.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/bldr-vs-exp/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: BLDR correlations · EXP correlations
