Data as of Sep 13, 2026. Both funds on the fields they both publish, from the same sources.
IWB vs VOOG: how they differ
IWB and VOOG hold 0% of their weight in the same names, and VOOG returned more over the year.
iShares Russell 1000 ETF and Vanguard S&P 500 Growth Index Fund.
What they hold in common
By the books each fund has filed, IWB and VOOG hold 0% of their money in the same securities at the same weight.
| Only in IWB | Only in VOOG |
|---|---|
| NVIDIA 7.26% | NVIDIA Corp 14.29% |
| APPLE 6.73% | Microsoft Corp 9.31% |
| MICROSOFT 5.21% | Apple Inc 6.38% |
| AMAZON.COM INC 3.49% | Alphabet Inc 6.17% |
| ALPHABET CLASS A 2.77% | Broadcom Inc 5.90% |
| BROADCOM INC 2.40% | Alphabet Inc 4.90% |
| ALPHABET CLASS C 2.24% | Amazon.com Inc 3.90% |
| META PLATFORMS CLASS A 2.02% | Meta Platforms Inc 3.85% |
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 May 31, 2026 and Sep 10, 2026.
| IWB iShares Russell 1000 ETF | VOOG Vanguard S&P 500 Growth Index Fund | |
|---|---|---|
| Where it sits | Core index fund | Core index fund |
| Issuer | iShares | Vanguard |
| What it is | Russell 1000 | S&P 500 Growth |
| Total return, 1 year | +16.7% | +17.8% |
| S&P 500 over the same days | +17.5% | +17.5% |
| Gap to the S&P 500 | −0.8 pts | +0.3 pts |
| Expense ratio | 0.15% | 0.05% |
| Already in the S&P 500 | 91.9% | 100.0% |
| Holdings | 945 | 146 |
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 Sep 10, 2026, 92% of the fund by weight is stocks the S&P 500 also holds, across 945 positions, with the top ten at 35.2%.
VOOG in plain words
VOOG is an index equity fund tracking the S&P 500 Growth. Over the year to Sep 11, 2026 it returned +17.8% 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 May 31, 2026, 100% of the fund by weight is stocks the S&P 500 also holds, across 146 positions, with the top ten at 60.2%.
Questions people ask
- Which returned more over the last year, IWB or VOOG?
- In the year to Sep 13, 2026, with distributions reinvested, IWB returned +16.7% and VOOG returned +17.8%, so VOOG returned more. One year is one year; the longer windows are in the table.
- Which is cheaper, IWB or VOOG?
- IWB charges 0.15% a year and VOOG charges 0.05%, so VOOG is cheaper. Fees come from each fund's prospectus.
- How much do IWB and VOOG overlap with the S&P 500?
- By their latest filed holdings, 92% of IWB and 100% of VOOG 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 VOOG, data as of Sep 13, 2026. https://etfiq.com/compare/any/iwb-vs-voog Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources