IWM vs ROK: Correlation
iShares Russell 2000 ETF (IWM) and Rockwell Automation (ROK) show a moderate relationship: their 3-year correlation of weekly returns is 0.57.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are IWM and ROK?
On 3 years of weekly data the IWM/ROK correlation comes out at 0.57, moderate. Recent behaviour matches the longer record: 0.51 over 1 year against 0.57 over 3. The 5-year figure is 0.63, and annualized covariance runs at 314.7 %².
Within IWM's tracked universe of 320 assets, ROK comes in at #155 by 3-year correlation. Twelve-month performance is nearly a tie, at +28.4% for IWM and +25.7% for ROK. Across three years, the rolling one-year figure varied moderately, from 0.50 to 0.81.
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.
IWM vs ROK: side by side
| IWM (iShares Russell 2000 ETF) | ROK (Rockwell Automation) | |
|---|---|---|
| 1-year return | +28.4% | +25.7% |
| 5-year return | +41.5% | +44.9% |
| Volatility (ann.) | 19.8% | 27.9% |
| Beta vs S&P 500 | 1.06 | 0.97 |
| Max drawdown (3Y) | -27.5% | -29.0% |
| Market cap | – | $48.2B |
| P/E (trailing) | – | 40.6 |
| Dividend yield | 0.91% | 1.26% |
| Expense ratio | 0.19% | – |
| Assets under management | $80.1B | – |
| Sector / category | ETF · US Small & Mid Cap | Industrials |
On the fund side, IWM sits in the Small Blend category at iShares, with $80.1B under management, 1757 holdings, a 0.19% expense ratio, a 0.91% trailing dividend yield.
Year-by-year returns
| Year | IWM | ROK |
|---|---|---|
| 2022 | -20.5% | -24.8% |
| 2023 | +16.8% | +22.6% |
| 2024 | +11.4% | -6.2% |
| 2025 | +12.7% | +38.4% |
| 2026 | +22.3% | +12.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are IWM and ROK good diversifiers for each other?
Somewhat, no more. With 0.57 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between IWM and ROK?
Using weekly returns as of 2026-08-27: 0.57 over 3 years, with 0.51 over the last year and 0.63 over 5 years.
Is ROK a good diversifier for IWM?
Somewhat, no more. With 0.57 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.57 mean?
On the −1 to +1 scale, 0.57 describes how much the two returns move together: +1 is lockstep, 0 is independence, negative values mean opposite directions. It says nothing about which performed better.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/iwm-vs-rok.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/iwm-vs-rok/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: IWM correlations · ROK correlations
