Data as of Sep 12, 2026. Both funds on the fields they both publish, from the same sources.
IUSB vs IWB: how they differ
IUSB and IWB hold 0% of their weight in the same names, and IWB returned more over the year.
iShares Core Universal USD Bond ETF and iShares Russell 1000 ETF.
What they hold in common
By the books each fund has filed, IUSB and IWB hold 0% of their money in the same securities at the same weight.
| Only in IUSB | Only in IWB |
|---|---|
| United States of America 0.38% | NVIDIA CORPORATION 6.73% |
| United States of America 0.37% | APPLE INC. 6.03% |
| United States of America 0.37% | MICROSOFT CORPORATION 4.00% |
| United States of America 0.37% | AMAZON.COM, INC. 3.33% |
| United States of America 0.36% | ALPHABET INC. 3.00% |
| United States of America 0.36% | BROADCOM INC. 2.54% |
| United States of America 0.36% | ALPHABET INC. 2.42% |
| United States of America 0.35% | MICRON TECHNOLOGY, INC. 1.88% |
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.
| IUSB iShares Core Universal USD Bond ETF | IWB iShares Russell 1000 ETF | |
|---|---|---|
| Where it sits | Core index fund | Core index fund |
| Issuer | iShares | iShares |
| What it is | Core Universal USD Bond | Russell 1000 |
| Total return, 1 year | −0.3% | +16.7% |
| S&P 500 over the same days | +17.5% | +17.5% |
| Gap to the S&P 500 | −17.8 pts | −0.8 pts |
| Expense ratio | 0.06% | 0.15% |
| Holdings | 17819 | 1024 |
IUSB in plain words
IUSB is a bond fund tracking the Core Universal USD Bond. Over the year to Sep 11, 2026 it returned −0.3% 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.
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, IUSB or IWB?
- In the year to Sep 12, 2026, with distributions reinvested, IUSB returned −0.3% and IWB returned +16.7%, so IWB returned more. One year is one year; the longer windows are in the table.
- Which is cheaper, IUSB or IWB?
- IUSB charges 0.06% a year and IWB charges 0.15%, so IUSB is cheaper. Fees come from each fund's prospectus.
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, IUSB against IWB, data as of Sep 12, 2026. https://etfiq.com/compare/any/IUSB-IWB Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources