MKSI vs ROK: Correlation
How closely do MKS Inc. (MKSI) and Rockwell Automation (ROK) trade together? Their weekly returns over three years give a correlation of 0.57, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are MKSI and ROK?
Over the past 3 years, MKSI and ROK moved with a correlation of 0.57, which is moderate. Recent behaviour matches the longer record: 0.52 over 1 year against 0.57 over 3. Over 5 years the correlation is 0.57, and the annualized covariance of weekly returns is 801.1 %².
Among the 41 assets we track against MKSI, ROK ranks #30 by 3-year correlation. The last year tells two different stories: MKSI led by 131.8 percentage points, +157.5% for MKSI against +25.7% for ROK. Note the risk asymmetry: MKSI runs 1.8 times the annualized volatility of the other leg, so equal-weighting the two is not an equal-risk position.
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 ROK: side by side
| MKSI (MKS Inc.) | ROK (Rockwell Automation) | |
|---|---|---|
| 1-year return | +157.5% | +25.7% |
| 5-year return | +88.2% | +44.9% |
| Volatility (ann.) | 50.8% | 27.9% |
| Beta vs S&P 500 | 2.39 | 0.97 |
| Max drawdown (3Y) | -59.1% | -29.0% |
| Market cap | $18.3B | $48.2B |
| P/E (trailing) | 43.3 | 40.6 |
| Dividend yield | 0.35% | 1.26% |
| Sector / category | US Listed | Industrials |
Year-by-year returns
| Year | MKSI | ROK |
|---|---|---|
| 2022 | -51.0% | -24.8% |
| 2023 | +22.6% | +22.6% |
| 2024 | +2.2% | -6.2% |
| 2025 | +54.4% | +38.4% |
| 2026 | +70.0% | +12.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are MKSI and ROK good diversifiers for each other?
To a limited degree. At 0.57 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 MKSI and ROK?
Using weekly returns as of 2026-08-27: 0.57 over 3 years, with 0.52 over the last year and 0.57 over 5 years.
Is ROK a good diversifier for MKSI?
To a limited degree. At 0.57 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 0.57 mean?
A reading of 0.57 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/mksi-vs-rok.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/mksi-vs-rok/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: MKSI correlations · ROK correlations
