AZZ vs NPO: Correlation
AZZ Inc. (AZZ) and Enpro Inc. (NPO) show a strong relationship: their 3-year correlation of weekly returns is 0.62.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are AZZ and NPO?
On 3 years of weekly data the AZZ/NPO correlation comes out at 0.62, strong. Little has changed lately, as the 1-year reading of 0.63 lands near the 3-year figure. The 5-year figure is 0.61, and annualized covariance runs at 697.3 %².
Within AZZ's tracked universe of 11 assets, NPO comes in at #4 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months NPO outperformed by 16.3 percentage points (+20.8% for AZZ against +37.1% for NPO).
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.
AZZ vs NPO: side by side
| AZZ (AZZ Inc.) | NPO (Enpro Inc.) | |
|---|---|---|
| 1-year return | +20.8% | +37.1% |
| 5-year return | +177.7% | +270.5% |
| Volatility (ann.) | 32.5% | 34.4% |
| Beta vs S&P 500 | 1.09 | 1.27 |
| Max drawdown (3Y) | -23.7% | -33.7% |
| Market cap | $4.2B | $6.5B |
| P/E (trailing) | 21.5 | 149.1 |
| Dividend yield | 0.57% | 0.41% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | AZZ | NPO |
|---|---|---|
| 2022 | -26.1% | -0.2% |
| 2023 | +46.8% | +45.6% |
| 2024 | +42.3% | +10.9% |
| 2025 | +31.9% | +25.0% |
| 2026 | +31.0% | +44.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are AZZ and NPO good diversifiers for each other?
Only partially. A correlation of 0.62 means AZZ and NPO share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
FAQ
What is the correlation between AZZ and NPO?
The AZZ/NPO correlation stands at 0.62 on a 3-year window (1 year: 0.63, 5 years: 0.61), computed from weekly returns as of 2026-08-27.
Is NPO a good diversifier for AZZ?
Only partially. A correlation of 0.62 means AZZ and NPO share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.62 mean?
A reading of 0.62 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/azz-vs-npo.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/azz-vs-npo/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: AZZ correlations · NPO correlations
