Data as of Sep 12, 2026. Both funds on the fields they both publish, from the same sources.
DFUS vs IWB: how they differ
DFUS and IWB hold 90% of their weight in the same names, and DFUS returned more over the year.
Dimensional U.S. Equity Market ETF and iShares Russell 1000 ETF.
What they hold in common
By the books each fund has filed, DFUS and IWB hold 90% of their money in the same securities at the same weight.
| Holding | DFUS | IWB |
|---|---|---|
| NVIDIA CORPORATION | 6.97% | 6.73% |
| APPLE INC. | 5.86% | 6.03% |
| MICROSOFT CORPORATION | 4.52% | 4.00% |
| AMAZON.COM, INC. | 3.84% | 3.33% |
| ALPHABET INC. | 3.31% | 3.00% |
| BROADCOM INC. | 2.90% | 2.54% |
| ALPHABET INC. | 2.74% | 2.42% |
| META PLATFORMS, INC. | 2.01% | 1.79% |
| TESLA, INC. | 1.78% | 1.77% |
| BERKSHIRE HATHAWAY INC. | 1.30% | 1.34% |
| JPMORGAN CHASE & CO. | 1.26% | 1.26% |
| ELI LILLY AND COMPANY | 1.13% | 1.38% |
| Only in DFUS | Only in IWB |
|---|---|
| SEAGATE TECHNOLOGY HOLDINGS PUBLIC LIMIT 0.23% | WELLTOWER INC. 0.23% |
| HONEYWELL INTERNATIONAL INCORPORATION 0.21% | PROLOGIS, INC. 0.18% |
| NXP Semiconductors N.V. 0.11% | EQUINIX, INC. 0.15% |
| TE CONNECTIVITY PUBLIC LIMITED COMPANY 0.09% | SPACE EXPLORATION TECHNOLOGIES CORP. 0.13% |
| Carnival Corporation 0.04% | AMERICAN TOWER CORPORATION 0.11% |
| COTERRA ENERGY INC. 0.04% | SIMON PROPERTY GROUP, INC. 0.10% |
| DUPONT DE NEMOURS, INC. 0.03% | HONEYWELL INTERNATIONAL INCORPORATION 0.10% |
| VISTANCE NETWORKS, INC. 0.02% | HONEYWELL AEROSPACE INC. 0.10% |
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.
| DFUS Dimensional U.S. Equity Market ETF | IWB iShares Russell 1000 ETF | |
|---|---|---|
| Where it sits | Core index fund | Core index fund |
| Issuer | Dimensional | iShares |
| What it is | U.S. Equity Market | Russell 1000 |
| Total return, 1 year | +17.5% | +16.7% |
| S&P 500 over the same days | +17.5% | +17.5% |
| Gap to the S&P 500 | 0.0 pts | −0.8 pts |
| Expense ratio | 0.09% | 0.15% |
| Already in the S&P 500 | 90.2% | 91.9% |
| Holdings | 2231 | 1024 |
DFUS in plain words
DFUS is an index equity fund tracking the U.S. Equity Market. Over the year to Sep 11, 2026 it returned +17.5% 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 Apr 30, 2026, 90% of the fund by weight is stocks the S&P 500 also holds, across 2231 positions, with the top ten at 35.2%.
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%.
Questions people ask
- Which returned more over the last year, DFUS or IWB?
- In the year to Sep 12, 2026, with distributions reinvested, DFUS returned +17.5% and IWB returned +16.7%, so DFUS returned more. One year is one year; the longer windows are in the table.
- Which is cheaper, DFUS or IWB?
- DFUS charges 0.09% a year and IWB charges 0.15%, so DFUS is cheaper. Fees come from each fund's prospectus.
- How much do DFUS and IWB overlap with the S&P 500?
- By their latest filed holdings, 90% of DFUS and 92% of IWB by weight is stocks the S&P 500 already holds. Between the two funds, 90% of their books are the same securities at the same weight.
Other comparisons
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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, DFUS against IWB, data as of Sep 12, 2026. https://etfiq.com/compare/any/DFUS-IWB Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources