NPO vs SLAB: Correlation
How closely do Enpro Inc. (NPO) and Silicon Laboratories, Inc. (SLAB) trade together? Their weekly returns over three years give a correlation of 0.55, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are NPO and SLAB?
Over the past 3 years, NPO and SLAB moved with a correlation of 0.55, which is moderate. The relationship has been stable: the 1-year correlation (0.46) sits close to the 3-year figure. Over 5 years the correlation is 0.51, and the annualized covariance of weekly returns is 924.8 %².
By 3-year correlation, SLAB places #16 of the 25 assets tracked against NPO. Correlation aside, the last 12 months split them widely, with SLAB ahead by 19.7 points (+37.1% versus +56.8%).
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.
NPO vs SLAB: side by side
| NPO (Enpro Inc.) | SLAB (Silicon Laboratories, Inc.) | |
|---|---|---|
| 1-year return | +37.1% | +56.8% |
| 5-year return | +270.5% | +36.7% |
| Volatility (ann.) | 34.4% | 48.6% |
| Beta vs S&P 500 | 1.27 | 1.40 |
| Max drawdown (3Y) | -33.7% | -45.7% |
| Market cap | $6.5B | $7.3B |
| P/E (trailing) | 149.1 | – |
| Dividend yield | 0.41% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | NPO | SLAB |
|---|---|---|
| 2022 | -0.2% | -34.3% |
| 2023 | +45.6% | -2.5% |
| 2024 | +10.9% | -6.1% |
| 2025 | +25.0% | +5.2% |
| 2026 | +44.5% | +67.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are NPO and SLAB good diversifiers for each other?
To a limited degree. At 0.55 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
FAQ
What is the correlation between NPO and SLAB?
Using weekly returns as of 2026-08-27: 0.55 over 3 years, with 0.46 over the last year and 0.51 over 5 years.
Is SLAB a good diversifier for NPO?
To a limited degree. At 0.55 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
What does a correlation of 0.55 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/npo-vs-slab.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/npo-vs-slab/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: NPO correlations · SLAB correlations
