BBCP vs CNM: Correlation
How closely do Concrete Pumping Holdings, Inc. (BBCP) and Core & Main, Inc. (CNM) trade together? Their weekly returns over three years give a correlation of 0.44, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BBCP and CNM?
On 3 years of weekly data the BBCP/CNM correlation comes out at 0.44, moderate. The relationship has been stable: the 1-year correlation (0.42) sits close to the 3-year figure. The 5-year figure is 0.35, and annualized covariance runs at 807.3 %².
CNM is one of the assets that tracks BBCP most closely: it ranks #2 out of the 10 assets we track against BBCP. The last year tells two different stories: BBCP led by 65.8 percentage points, +32.3% for BBCP against -33.5% for CNM.
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.
BBCP vs CNM: side by side
| BBCP (Concrete Pumping Holdings, Inc.) | CNM (Core & Main, Inc.) | |
|---|---|---|
| 1-year return | +32.3% | -33.5% |
| 5-year return | +27.3% | +63.1% |
| Volatility (ann.) | 45.9% | 39.7% |
| Beta vs S&P 500 | 0.71 | 1.19 |
| Max drawdown (3Y) | -43.2% | -38.7% |
| Market cap | $0.5B | $8.5B |
| P/E (trailing) | 67.4 | 18.4 |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | BBCP | CNM |
|---|---|---|
| 2022 | -28.7% | -36.4% |
| 2023 | +40.2% | +109.3% |
| 2024 | -18.8% | +26.0% |
| 2025 | +13.7% | +2.1% |
| 2026 | +40.5% | -15.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BBCP and CNM good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.44 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between BBCP and CNM?
Using weekly returns as of 2026-08-27: 0.44 over 3 years, with 0.42 over the last year and 0.35 over 5 years.
Is CNM a good diversifier for BBCP?
Yes, to a useful degree: a correlation of 0.44 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.44 mean?
On the −1 to +1 scale, 0.44 describes how much the two returns move together: +1 is lockstep, 0 is independence, negative values mean opposite directions. It says nothing about which performed better.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/bbcp-vs-cnm.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/bbcp-vs-cnm/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: BBCP correlations · CNM correlations
