Data as of Sep 13, 2026. Both funds on the fields they both publish, from the same sources.
IWB vs VUG: how they differ
IWB and VUG hold 0% of their weight in the same names, and IWB returned more over the year.
iShares Russell 1000 ETF and Vanguard Growth Index Fund.
What they hold in common
By the books each fund has filed, IWB and VUG hold 0% of their money in the same securities at the same weight.
| Only in IWB | Only in VUG |
|---|---|
| NVIDIA 7.26% | NVIDIA Corp 12.63% |
| APPLE 6.73% | Apple Inc 11.67% |
| MICROSOFT 5.21% | Microsoft Corp 7.62% |
| AMAZON.COM INC 3.49% | Alphabet Inc 5.76% |
| ALPHABET CLASS A 2.77% | Alphabet Inc 4.54% |
| BROADCOM INC 2.40% | Amazon.com Inc 4.47% |
| ALPHABET CLASS C 2.24% | Broadcom Inc 4.29% |
| META PLATFORMS CLASS A 2.02% | 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 and Sep 10, 2026.
| IWB iShares Russell 1000 ETF | VUG Vanguard Growth Index Fund | |
|---|---|---|
| Where it sits | Core index fund | Core index fund |
| Issuer | iShares | Vanguard |
| What it is | Russell 1000 | US growth |
| Total return, 1 year | +16.7% | +12.9% |
| S&P 500 over the same days | +17.5% | +17.5% |
| Gap to the S&P 500 | −0.8 pts | −4.6 pts |
| Expense ratio | 0.15% | 0.03% |
| Already in the S&P 500 | 91.9% | 97.4% |
| Holdings | 945 | 147 |
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%.
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, IWB or VUG?
- In the year to Sep 13, 2026, with distributions reinvested, IWB returned +16.7% and VUG returned +12.9%, so IWB returned more. One year is one year; the longer windows are in the table.
- Which is cheaper, IWB or VUG?
- IWB charges 0.15% a year and VUG charges 0.03%, so VUG is cheaper. Fees come from each fund's prospectus.
- How much do IWB and VUG overlap with the S&P 500?
- By their latest filed holdings, 92% of IWB 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.
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, IWB against VUG, data as of Sep 13, 2026. https://etfiq.com/compare/any/iwb-vs-vug Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources