DFSU vs IWB: Differences, Returns & Fees
DFSU and IWB hold 64% of their weight in the same names, and IWB returned +16.6% over the year. Net assets: $2.3bn on Jul 31, 2026 for Dimensional US Sustainability Core 1 ETF, and $49.6bn on Oct 9, 2026 for iShares Russell 1000 ETF.
Both cost 0.15% a year; their one-year returns differ by 2.6 points; IWB is far larger, $48.3bn against $2.3bn.
Points (pts) are percentage points.
| DFSU | IWB | |
|---|---|---|
| Expense ratio | 0.15% | 0.15% |
| Net assets, as of Jul 31, 2026 | $2.3bn | $48.3bn |
| Total return, 1 year | +14.0% | +16.6% |
| What it tracks | No index, actively managed | Russell 1000 Index |
| Holdings in common | 64% | |
| Top ten holdings, share of the fund | 32.0% | 36.1% |
Holdings in common uses holdings dated Jul 31, 2026 and Oct 9, 2026.
What they hold in common
By the books each fund has filed, DFSU and IWB hold 64% of their money in the same securities at the same weight. Above 50%, holding both is close to holding one of them twice. Holdings dated Jul 31, 2026 and Oct 9, 2026.
half
64% in common
On the same fields
DFSU and IWB on the fields both publish, as of Oct 9, 2026. Source: ETFIQ.
About DFSU
DFSU is actively managed and tracks no index. The prospectus expense ratio is 0.15% a year. By its holdings filed for Jul 31, 2026, 81% of the fund by weight is stocks the S&P 500 also holds, across 1,940 positions, with the top ten at 32.0%.
Over the year to Oct 9, 2026 it returned +14.0% with distributions reinvested, against +16.7% for its benchmark, the Russell 3000 Index.
About IWB
IWB tracks the Russell 1000. Over the year to Oct 9, 2026 it returned +16.6% with distributions reinvested, against +16.8% for its benchmark, the Russell 1000 Index. By its holdings published by its issuer for Oct 9, 2026, 92% of the fund by weight is stocks the S&P 500 also holds, across 1,025 positions, with the top ten at 36.1%.
Questions people ask
ETFIQ links to the documents behind every figure; a link is not an endorsement. A comparison is not a recommendation.
How this is computed
Overlap adds up the smaller of the two weights for each security both funds hold.
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ETFIQ, DFSU against IWB, data as of Oct 9, 2026. https://etfiq.com/compare/any/dfsu-vs-iwb
ETFIQ. (Oct 9, 2026). DFSU against IWB. Retrieved from https://etfiq.com/compare/any/dfsu-vs-iwb
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