Data as of Sep 12, 2026. Both funds on the fields they both publish, from the same sources.
IWO vs VXF: how they differ
IWO and VXF hold 21% of their weight in the same names, and IWO returned more over the year.
iShares Russell 2000 Growth ETF and Vanguard Extended Market Index Fund.
What they hold in common
By the books each fund has filed, IWO and VXF hold 21% of their money in the same securities at the same weight.
| Holding | IWO | VXF |
|---|---|---|
| Moog, Inc. | 0.73% | 0.14% |
| Hut 8 Corp. | 0.38% | 0.14% |
| Argan, Inc. | 0.66% | 0.13% |
| BrightSpring Health Services, Inc. | 0.68% | 0.13% |
| MaxLinear, Inc. | 0.67% | 0.13% |
| Krystal Biotech, Inc. | 0.58% | 0.12% |
| ESCO Technologies, Inc. | 0.56% | 0.11% |
| Riot Platforms, Inc. | 0.39% | 0.10% |
| D-Wave Quantum, Inc. | 0.53% | 0.10% |
| Praxis Precision Medicines, Inc. | 0.51% | 0.10% |
| EnerSys | 0.49% | 0.10% |
| FirstCash Holdings, Inc. | 0.54% | 0.10% |
| Only in IWO | Only in VXF |
|---|---|
| JFrog Ltd. 0.60% | Space Exploration Technologies Corp 1.19% |
| Alkermes plc 0.42% | Snowflake Inc 1.03% |
| Joby Aviation, Inc. 0.36% | Bloom Energy Corp 0.93% |
| Xenon Pharmaceuticals, Inc. 0.36% | Cloudflare Inc 0.92% |
| Noble Corp. plc 0.27% | Astera Labs Inc 0.76% |
| Constellium SE 0.26% | Rocket Lab Corp 0.61% |
| Ichor Holdings Ltd. 0.24% | Cheniere Energy Inc 0.59% |
| Ambarella, Inc. 0.22% | Ferguson Enterprises Inc 0.54% |
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 | VXF Vanguard Extended Market Index Fund | |
|---|---|---|
| Where it sits | Core index fund | Core index fund |
| Issuer | iShares | Vanguard |
| What it is | Russell 2000 Growth | Extended Market |
| Total return, 1 year | +17.0% | +14.1% |
| S&P 500 over the same days | +17.5% | +17.5% |
| Gap to the S&P 500 | −0.5 pts | −3.4 pts |
| Expense ratio | 0.24% | 0.05% |
| Already in the S&P 500 | 0.0% | 0.0% |
| Holdings | 1133 | 3365 |
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.
VXF in plain words
VXF is an index equity fund tracking the Extended Market. Over the year to Sep 11, 2026 it returned +14.1% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.05% 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 3365 positions, with the top ten at 7.6%. It sat 5.1% below its high of Aug 14, 2026 on Sep 11, 2026.
Questions people ask
- Which returned more over the last year, IWO or VXF?
- In the year to Sep 12, 2026, with distributions reinvested, IWO returned +17.0% and VXF returned +14.1%, so IWO returned more. One year is one year; the longer windows are in the table.
- Which is cheaper, IWO or VXF?
- IWO charges 0.24% a year and VXF charges 0.05%, so VXF is cheaper. Fees come from each fund's prospectus.
- How much do IWO and VXF overlap with the S&P 500?
- By their latest filed holdings, 0% of IWO and 0% of VXF by weight is stocks the S&P 500 already holds. Between the two funds, 21% of their books are the same securities at the same weight.
Other comparisons
Where to next
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 VXF, data as of Sep 12, 2026. https://etfiq.com/compare/any/IWO-VXF Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources