EXTR vs ROK: Correlation
How closely do Extreme Networks, Inc. (EXTR) and Rockwell Automation (ROK) trade together? Their weekly returns over three years give a correlation of 0.52, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are EXTR and ROK?
On 3 years of weekly data the EXTR/ROK correlation comes out at 0.52, moderate. The link has loosened recently: the 1-year correlation (0.42) runs below the 3-year figure (0.52). The 5-year figure is 0.48, and annualized covariance runs at 677.1 %².
In EXTR's tracked universe of 11 assets, ROK sits right near the top at #1. Correlation aside, the last 12 months split them widely, with ROK ahead by 17.7 points (+8.0% versus +25.7%). Risk is not evenly split, since EXTR carries 1.7 times the volatility of the other side.
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.
EXTR vs ROK: side by side
| EXTR (Extreme Networks, Inc.) | ROK (Rockwell Automation) | |
|---|---|---|
| 1-year return | +8.0% | +25.7% |
| 5-year return | +112.0% | +44.9% |
| Volatility (ann.) | 46.3% | 27.9% |
| Beta vs S&P 500 | 1.23 | 0.97 |
| Max drawdown (3Y) | -61.5% | -29.0% |
| Market cap | $3.0B | $48.2B |
| P/E (trailing) | 72.6 | 40.6 |
| Dividend yield | 0.00% | 1.26% |
| Sector / category | US Listed | Industrials |
Year-by-year returns
| Year | EXTR | ROK |
|---|---|---|
| 2022 | +16.6% | -24.8% |
| 2023 | -3.7% | +22.6% |
| 2024 | -5.1% | -6.2% |
| 2025 | -0.5% | +38.4% |
| 2026 | +39.5% | +12.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are EXTR and ROK good diversifiers for each other?
Somewhat, no more. With 0.52 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between EXTR and ROK?
As of 2026-08-27, the correlation of weekly returns between EXTR and ROK is 0.52 over 3 years, 0.42 over 1 year and 0.48 over 5 years.
Is ROK a good diversifier for EXTR?
Somewhat, no more. With 0.52 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.52 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/extr-vs-rok.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/extr-vs-rok/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: EXTR correlations · ROK correlations
