IWM vs SFIX: Correlation
Measured on weekly returns over the past three years, iShares Russell 2000 ETF (IWM) and Stitch Fix, Inc. (SFIX) 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 SFIX?
Across a 3-year window, the weekly returns of IWM and SFIX correlate at 0.48, moderate. The relationship has been stable: the 1-year correlation (0.43) sits close to the 3-year figure. Stretching to 5 years gives 0.52, with an annualized covariance of 715.3 %².
Among the 320 assets we track against IWM, SFIX ranks #256 by 3-year correlation. The last year tells two different stories: IWM led by 71.9 percentage points, +28.4% for IWM against -43.5% for SFIX. Note the risk asymmetry: SFIX runs 3.8 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.
IWM vs SFIX: side by side
| IWM (iShares Russell 2000 ETF) | SFIX (Stitch Fix, Inc.) | |
|---|---|---|
| 1-year return | +28.4% | -43.5% |
| 5-year return | +41.5% | -92.6% |
| Volatility (ann.) | 19.8% | 74.6% |
| Beta vs S&P 500 | 1.06 | 1.71 |
| Max drawdown (3Y) | -27.5% | -58.6% |
| Market cap | – | $0.4B |
| 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, iShares's Small Blend fund, carries $80.1B under management, 1757 holdings, a 0.19% expense ratio, a 0.91% trailing dividend yield.
Year-by-year returns
| Year | IWM | SFIX |
|---|---|---|
| 2022 | -20.5% | -83.6% |
| 2023 | +16.8% | +14.8% |
| 2024 | +11.4% | +20.7% |
| 2025 | +12.7% | +21.8% |
| 2026 | +22.3% | -41.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are IWM and SFIX good diversifiers for each other?
A fair diversifier. At 0.48, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between IWM and SFIX?
The IWM/SFIX correlation stands at 0.48 on a 3-year window (1 year: 0.43, 5 years: 0.52), computed from weekly returns as of 2026-08-27.
Is SFIX a good diversifier for IWM?
A fair diversifier. At 0.48, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.48 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/iwm-vs-sfix.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/iwm-vs-sfix/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: IWM correlations · SFIX correlations
