Data as of Oct 28, 2026.
IWF vs IWO: Differences, Returns & Fees
Over the year to Oct 28, 2026, IWF returned +0.9% to IWO's +7.9%; 0% of their weight is in the same names.
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Net assets on Oct 27, 2026: $124.7bn for iShares Russell 1000 Growth ETF and $14.0bn for iShares Russell 2000 Growth ETF.
Pair scorecard
IWF costs 0.06 points a year less; their one-year returns differ by 7.0 points; IWF is 8.9 times larger.
| Measure | IWF | IWO |
|---|---|---|
| Return | ||
| Total return, 1 year | +0.9% | +7.9% |
| Drawdown | ||
| Below its high | 4.8%, high on Oct 6, 2026 | 9.9%, high on Aug 14, 2026 |
| Benchmark | ||
| What it tracks | Russell 1000 Growth Index | Russell 2000 Growth Index |
| Cost and size | ||
| Expense ratio | 0.18% | 0.24% |
| Net assets, as of Oct 27, 2026 | $124.7bn | $14.0bn |
| Holdings | ||
| Holdings in common | 0% | |
| Top ten holdings, share of the fund | 57.5% | 6.4% |
Holdings in common uses holdings dated Oct 27, 2026. Method
What they share
By the books each fund has filed, IWF and IWO hold 0% of their money in the same securities at the same weight. Holdings dated Oct 27, 2026.
half
0% in common
Only in one fund ↓
Side by side
IWF and IWO on the fields both publish, as of Oct 28, 2026. Source: ETFIQ.
IWF
IWF tracks the Russell 1000 growth. Over the year to Oct 28, 2026 it returned +0.9% with distributions reinvested, against +1.1% for its benchmark, the Russell 1000 Growth Index. The prospectus expense ratio is 0.18% a year. By its holdings published by its issuer for Oct 27, 2026, 94% of the fund by weight is stocks the S&P 500 also holds, across 374 positions, with the top ten at 57.5%. It sat 4.8% below its high of Oct 6, 2026 on Oct 28, 2026.
IWO
IWO tracks the Russell 2000 Growth. Over the year to Oct 28, 2026 it returned +7.9% with distributions reinvested, against +8.0% for its benchmark, the Russell 2000 Growth Index. The prospectus expense ratio is 0.24% a year. By its holdings published by its issuer for Oct 27, 2026, 0% of the fund by weight is stocks the S&P 500 also holds, across 1,122 positions, with the top ten at 6.4%. It sat 9.9% below its high of Aug 14, 2026 on Oct 28, 2026.
Questions people ask
- Which returned more over the last year, IWF or IWO?
- In the year to Oct 28, 2026, with distributions reinvested, IWF returned +0.9% and IWO +7.9%.
- Which is cheaper, IWF or IWO?
- IWF is cheaper, by 0.06 percentage points a year. That is about $6 on $10,000 held for a year. Fees come from each fund's prospectus.
Links are sources, not endorsements. A comparison is not a recommendation.
How this is computed
Overlap adds up the smaller of the two weights for each security both funds hold.
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ETFIQ, IWF against IWO, data as of Oct 28, 2026. https://etfiq.com/compare/any/iwf-vs-iwo
ETFIQ. (Oct 28, 2026). IWF against IWO. Retrieved from https://etfiq.com/compare/any/iwf-vs-iwo
[IWF against IWO (ETFIQ, Oct 28, 2026)](https://etfiq.com/compare/any/iwf-vs-iwo)
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