BLDR vs IR: Correlation
Measured on weekly returns over the past three years, Builders FirstSource (BLDR) and Ingersoll Rand (IR) carry a correlation of 0.62, a strong link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BLDR and IR?
Across a 3-year window, the weekly returns of BLDR and IR correlate at 0.62, strong. Little has changed lately, as the 1-year reading of 0.65 lands near the 3-year figure. Stretching to 5 years gives 0.58, with an annualized covariance of 837.5 %².
By 3-year correlation, IR places #25 of the 48 assets tracked against BLDR. Their recent paths diverged sharply: over the last 12 months IR outperformed by 50.6 percentage points (-52.6% for BLDR against -2.0% for IR). Stability stands out here, with the rolling one-year correlation confined to 0.47 through 0.68. One caveat on sizing: BLDR is 1.5 times as volatile as the other leg, so an equal-dollar split is far from equal-risk.
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 IR: side by side
| BLDR (Builders FirstSource) | IR (Ingersoll Rand) | |
|---|---|---|
| 1-year return | -52.6% | -2.0% |
| 5-year return | +25.8% | +49.2% |
| Volatility (ann.) | 45.6% | 29.8% |
| Beta vs S&P 500 | 1.36 | 1.17 |
| Max drawdown (3Y) | -68.7% | -36.6% |
| Market cap | $7.2B | $30.6B |
| P/E (trailing) | 74.7 | 32.6 |
| Dividend yield | 0.00% | 0.15% |
| Sector / category | Industrials | Industrials |
Year-by-year returns
| Year | BLDR | IR |
|---|---|---|
| 2022 | -24.3% | -15.4% |
| 2023 | +157.3% | +48.2% |
| 2024 | -14.4% | +17.1% |
| 2025 | -28.0% | -12.3% |
| 2026 | -34.7% | -0.2% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BLDR and IR good diversifiers for each other?
Somewhat, no more. With 0.62 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between BLDR and IR?
As of 2026-08-27, the correlation of weekly returns between BLDR and IR is 0.62 over 3 years, 0.65 over 1 year and 0.58 over 5 years.
Is IR a good diversifier for BLDR?
Somewhat, no more. With 0.62 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.62 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/bldr-vs-ir.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/bldr-vs-ir/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: BLDR correlations · IR correlations
