IWM vs SSYS: Correlation
Measured on weekly returns over the past three years, iShares Russell 2000 ETF (IWM) and Stratasys, Ltd. (SSYS) carry a correlation of 0.48, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are IWM and SSYS?
Across a 3-year window, the weekly returns of IWM and SSYS correlate at 0.48, moderate. The past 12 months show a tighter link (0.69) than the 3-year average (0.48). Stretching to 5 years gives 0.52, with an annualized covariance of 484.6 %².
Among the 320 assets we track against IWM, SSYS ranks #259 by 3-year correlation. Correlation aside, the last 12 months split them widely, with IWM ahead by 56.1 points (+28.4% versus -27.7%). Risk is not evenly split, since SSYS carries 2.6 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.
IWM vs SSYS: side by side
| IWM (iShares Russell 2000 ETF) | SSYS (Stratasys, Ltd.) | |
|---|---|---|
| 1-year return | +28.4% | -27.7% |
| 5-year return | +41.5% | -61.1% |
| Volatility (ann.) | 19.8% | 50.7% |
| Beta vs S&P 500 | 1.06 | 1.38 |
| Max drawdown (3Y) | -27.5% | -58.4% |
| Market cap | – | $0.7B |
| P/E (trailing) | – | – |
| Dividend yield | 0.91% | 0.00% |
| Expense ratio | 0.19% | – |
| Assets under management | $80.1B | – |
| Sector / category | ETF · US Small & Mid Cap | US Listed |
IWM is a Small Blend fund from iShares: $80.1B under management, 1757 holdings, a 0.19% expense ratio, a 0.91% trailing dividend yield.
Year-by-year returns
| Year | IWM | SSYS |
|---|---|---|
| 2022 | -20.5% | -51.6% |
| 2023 | +16.8% | +20.4% |
| 2024 | +11.4% | -37.7% |
| 2025 | +12.7% | -2.4% |
| 2026 | +22.3% | -8.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are IWM and SSYS good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.48 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between IWM and SSYS?
Using weekly returns as of 2026-08-27: 0.48 over 3 years, with 0.69 over the last year and 0.52 over 5 years.
Is SSYS a good diversifier for IWM?
Yes, to a useful degree: a correlation of 0.48 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.48 mean?
On the −1 to +1 scale, 0.48 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-ssys.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/iwm-vs-ssys/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: IWM correlations · SSYS correlations
