MKSI vs NPO: Correlation
How closely do MKS Inc. (MKSI) and Enpro Inc. (NPO) trade together? Their weekly returns over three years give a correlation of 0.67, which is strong.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are MKSI and NPO?
Across a 3-year window, the weekly returns of MKSI and NPO correlate at 0.67, strong. The relationship has been stable: the 1-year correlation (0.65) sits close to the 3-year figure. Stretching to 5 years gives 0.59, with an annualized covariance of 1169.7 %².
Among the 41 assets we track against MKSI, NPO ranks #17 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months MKSI outperformed by 120.4 percentage points (+157.5% for MKSI 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.
MKSI vs NPO: side by side
| MKSI (MKS Inc.) | NPO (Enpro Inc.) | |
|---|---|---|
| 1-year return | +157.5% | +37.1% |
| 5-year return | +88.2% | +270.5% |
| Volatility (ann.) | 50.8% | 34.4% |
| Beta vs S&P 500 | 2.39 | 1.27 |
| Max drawdown (3Y) | -59.1% | -33.7% |
| Market cap | $18.3B | $6.5B |
| P/E (trailing) | 43.3 | 149.1 |
| Dividend yield | 0.35% | 0.41% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | MKSI | NPO |
|---|---|---|
| 2022 | -51.0% | -0.2% |
| 2023 | +22.6% | +45.6% |
| 2024 | +2.2% | +10.9% |
| 2025 | +54.4% | +25.0% |
| 2026 | +70.0% | +44.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are MKSI and NPO good diversifiers for each other?
Somewhat, no more. With 0.67 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between MKSI and NPO?
The MKSI/NPO correlation stands at 0.67 on a 3-year window (1 year: 0.65, 5 years: 0.59), computed from weekly returns as of 2026-08-27.
Is NPO a good diversifier for MKSI?
Somewhat, no more. With 0.67 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.67 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/mksi-vs-npo.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/mksi-vs-npo/)
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Related comparisons
Hubs: MKSI correlations · NPO correlations
