Data as of Sep 12, 2026. Both funds on the fields they both publish, from the same sources.
IWO vs VOX: how they differ
IWO and VOX hold 2% of their weight in the same names, and IWO returned more over the year.
iShares Russell 2000 Growth ETF and Vanguard Communication Services Index Fund.
What they hold in common
By the books each fund has filed, IWO and VOX hold 2% of their money in the same securities at the same weight.
| Holding | IWO | VOX |
|---|---|---|
| Cinemark Holdings, Inc. | 0.20% | 0.18% |
| Lionsgate Studios Corp. | 0.18% | 0.17% |
| Madison Square Garden Entertainment Corp | 0.19% | 0.16% |
| Cargurus, Inc. | 0.15% | 0.15% |
| Atlanta Braves Holdings, Inc. | 0.15% | 0.14% |
| Bandwidth, Inc. | 0.11% | 0.11% |
| IMAX Corp. | 0.11% | 0.11% |
| Magnite, Inc. | 0.10% | 0.12% |
| Uniti Group, Inc. | 0.08% | 0.10% |
| DoubleVerify Holdings, Inc. | 0.08% | 0.08% |
| USA TODAY Co., Inc. | 0.07% | 0.07% |
| John Wiley & Sons, Inc. | 0.05% | 0.10% |
| Only in IWO | Only in VOX |
|---|---|
| Moog, Inc. 0.73% | Meta Platforms Inc 21.12% |
| BrightSpring Health Services, Inc. 0.68% | Alphabet Inc 16.14% |
| MaxLinear, Inc. 0.67% | Alphabet Inc 10.61% |
| Argan, Inc. 0.66% | Netflix Inc 4.77% |
| JFrog Ltd. 0.60% | Verizon Communications Inc 4.17% |
| Krystal Biotech, Inc. 0.58% | Walt Disney Co/The 3.96% |
| ESCO Technologies, Inc. 0.56% | AT&T Inc 3.69% |
| FirstCash Holdings, Inc. 0.54% | Warner Bros Discovery Inc 2.74% |
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 and May 31, 2026.
| IWO iShares Russell 2000 Growth ETF | VOX Vanguard Communication Services Index Fund | |
|---|---|---|
| Where it sits | Core index fund | Core index fund |
| Issuer | iShares | Vanguard |
| What it is | Russell 2000 Growth | Communication Services |
| Total return, 1 year | +17.0% | +2.9% |
| S&P 500 over the same days | +17.5% | +17.5% |
| Gap to the S&P 500 | −0.5 pts | −14.6 pts |
| Expense ratio | 0.24% | 0.09% |
| Already in the S&P 500 | 0.0% | 84.5% |
| Holdings | 1133 | 114 |
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.
VOX in plain words
VOX is an index equity fund tracking the Communication Services. Over the year to Sep 11, 2026 it returned +2.9% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.09% a year. By its holdings filed for May 31, 2026, 84% of the fund by weight is stocks the S&P 500 also holds, across 114 positions, with the top ten at 72.1%. It sat 4.3% below its high of Jan 29, 2026 on Sep 11, 2026.
Questions people ask
- Which returned more over the last year, IWO or VOX?
- In the year to Sep 12, 2026, with distributions reinvested, IWO returned +17.0% and VOX returned +2.9%, so IWO returned more. One year is one year; the longer windows are in the table.
- Which is cheaper, IWO or VOX?
- IWO charges 0.24% a year and VOX charges 0.09%, so VOX is cheaper. Fees come from each fund's prospectus.
- How much do IWO and VOX overlap with the S&P 500?
- By their latest filed holdings, 0% of IWO and 84% of VOX by weight is stocks the S&P 500 already holds. Between the two funds, 2% 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 VOX, data as of Sep 12, 2026. https://etfiq.com/compare/any/IWO-VOX Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources