Data as of Sep 12, 2026. Both funds on the fields they both publish, from the same sources.
IWO vs VUG: how they differ
IWO and VUG hold 0% of their weight in the same names, and IWO returned more over the year.
iShares Russell 2000 Growth ETF and Vanguard Growth Index Fund.
What they hold in common
By the books each fund has filed, IWO and VUG hold 0% of their money in the same securities at the same weight.
| Only in IWO | Only in VUG |
|---|---|
| Moog, Inc. 0.73% | NVIDIA Corp 12.63% |
| BrightSpring Health Services, Inc. 0.68% | Apple Inc 11.67% |
| MaxLinear, Inc. 0.67% | Microsoft Corp 7.62% |
| Argan, Inc. 0.66% | Alphabet Inc 5.76% |
| JFrog Ltd. 0.60% | Alphabet Inc 4.54% |
| Krystal Biotech, Inc. 0.58% | Amazon.com Inc 4.47% |
| ESCO Technologies, Inc. 0.56% | Broadcom Inc 4.29% |
| FirstCash Holdings, Inc. 0.54% | Meta Platforms Inc 3.41% |
Weight overlap is an ETFIQ calculation: for every security both funds hold, the smaller of the two weights, summed. Above 50%, holding both is close to holding one of them twice. Holdings dated Jun 30, 2026.
| IWO iShares Russell 2000 Growth ETF | VUG Vanguard Growth Index Fund | |
|---|---|---|
| Where it sits | Core index fund | Core index fund |
| Issuer | iShares | Vanguard |
| What it is | Russell 2000 Growth | US growth |
| Total return, 1 year | +17.0% | +12.9% |
| S&P 500 over the same days | +17.5% | +17.5% |
| Gap to the S&P 500 | −0.5 pts | −4.6 pts |
| Expense ratio | 0.24% | 0.03% |
| Already in the S&P 500 | 0.0% | 97.4% |
| Holdings | 1133 | 147 |
IWO in plain words
IWO is an index equity fund tracking the Russell 2000 Growth. Over the year to Sep 11, 2026 it returned +17.0% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.24% a year. By its holdings filed for Jun 30, 2026, 0% of the fund by weight is stocks the S&P 500 also holds, across 1133 positions, with the top ten at 6.1%. It sat 7.1% below its high of Aug 14, 2026 on Sep 11, 2026.
VUG in plain words
VUG is an index equity fund tracking the US growth. Over the year to Sep 11, 2026 it returned +12.9% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.03% a year. By its holdings filed for Jun 30, 2026, 97% of the fund by weight is stocks the S&P 500 also holds, across 147 positions, with the top ten at 60.5%.
Questions people ask
- Which returned more over the last year, IWO or VUG?
- In the year to Sep 12, 2026, with distributions reinvested, IWO returned +17.0% and VUG returned +12.9%, so IWO returned more. One year is one year; the longer windows are in the table.
- Which is cheaper, IWO or VUG?
- IWO charges 0.24% a year and VUG charges 0.03%, so VUG is cheaper. Fees come from each fund's prospectus.
- How much do IWO and VUG overlap with the S&P 500?
- By their latest filed holdings, 0% of IWO and 97% of VUG by weight is stocks the S&P 500 already holds. Between the two funds, 0% of their books are the same securities at the same weight.
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Where these figures came from
ETFIQ links to the documents behind every figure. It is not affiliated with any issuer, and a link is not an endorsement.
Cite this page. ETFIQ, IWO against VUG, data as of Sep 12, 2026. https://etfiq.com/compare/any/IWO-VUG Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources