Data as of Sep 12, 2026. Both funds on the fields they both publish, from the same sources.
IWB vs VWO: how they differ
IWB and VWO hold 0% of their weight in the same names, and IWB returned more over the year.
iShares Russell 1000 ETF and Vanguard Emerging Markets Stock Index Fund.
What they hold in common
By the books each fund has filed, IWB and VWO hold 0% of their money in the same securities at the same weight.
| Only in IWB | Only in VWO |
|---|---|
| NVIDIA CORPORATION 6.73% | Taiwan Semiconductor Manufacturing Co Lt 14.73% |
| APPLE INC. 6.03% | Tencent Holdings Ltd 3.28% |
| MICROSOFT CORPORATION 4.00% | Alibaba Group Holding Ltd 2.57% |
| AMAZON.COM, INC. 3.33% | Delta Electronics Inc 1.18% |
| ALPHABET INC. 3.00% | MediaTek Inc 1.07% |
| BROADCOM INC. 2.54% | Reliance Industries Ltd 0.90% |
| ALPHABET INC. 2.42% | HDFC Bank Ltd 0.81% |
| MICRON TECHNOLOGY, INC. 1.88% | Hon Hai Precision Industry Co Ltd 0.75% |
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 Apr 30, 2026 and Jun 30, 2026.
| IWB iShares Russell 1000 ETF | VWO Vanguard Emerging Markets Stock Index Fund | |
|---|---|---|
| Where it sits | Core index fund | Core index fund |
| Issuer | iShares | Vanguard |
| What it is | Russell 1000 | Emerging markets |
| Total return, 1 year | +16.7% | +15.6% |
| S&P 500 over the same days | +17.5% | +17.5% |
| Gap to the S&P 500 | −0.8 pts | −1.9 pts |
| Expense ratio | 0.15% | 0.06% |
| Already in the S&P 500 | 91.9% | 0.0% |
| Holdings | 1024 | 6355 |
IWB in plain words
IWB is an index equity fund tracking the Russell 1000. Over the year to Sep 11, 2026 it returned +16.7% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.15% a year. By its holdings filed for Jun 30, 2026, 92% of the fund by weight is stocks the S&P 500 also holds, across 1024 positions, with the top ten at 33.5%.
VWO in plain words
VWO is an index equity fund tracking the Emerging markets. Over the year to Sep 11, 2026 it returned +15.6% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.06% a year. By its holdings filed for Apr 30, 2026, 0% of the fund by weight is stocks the S&P 500 also holds, across 6355 positions, with the top ten at 26.8%.
Questions people ask
- Which returned more over the last year, IWB or VWO?
- In the year to Sep 12, 2026, with distributions reinvested, IWB returned +16.7% and VWO returned +15.6%, so IWB returned more. One year is one year; the longer windows are in the table.
- Which is cheaper, IWB or VWO?
- IWB charges 0.15% a year and VWO charges 0.06%, so VWO is cheaper. Fees come from each fund's prospectus.
- How much do IWB and VWO overlap with the S&P 500?
- By their latest filed holdings, 92% of IWB and 0% of VWO 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, IWB against VWO, data as of Sep 12, 2026. https://etfiq.com/compare/any/IWB-VWO Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources