Data as of Sep 12, 2026. Both funds on the fields they both publish, from the same sources.
IUSB vs VUSB: how they differ
IUSB and VUSB hold 2% of their weight in the same names, and VUSB returned more over the year.
iShares Core Universal USD Bond ETF and Vanguard Ultra-Short Bond ETF.
What they hold in common
By the books each fund has filed, IUSB and VUSB hold 2% of their money in the same securities at the same weight.
| Holding | IUSB | VUSB |
|---|---|---|
| United States of America | 0.15% | 0.68% |
| United States of America | 0.14% | 0.53% |
| Bank of America Corp. | 0.02% | 0.20% |
| Goldman Sachs Group, Inc. (The) | 0.02% | 0.36% |
| Synchrony Card Funding LLC | 0.01% | 0.12% |
| Goldman Sachs Group, Inc. (The) | 0.01% | 0.23% |
| Bank of America Corp. | 0.01% | 0.37% |
| Carmax Auto Owner Trust | 0.01% | 0.08% |
| Morgan Stanley | 0.01% | 0.03% |
| Morgan Stanley | 0.01% | 0.10% |
| Amgen, Inc. | 0.01% | 0.17% |
| Bank of America Corp. | 0.01% | 0.06% |
| Only in IUSB | Only in VUSB |
|---|---|
| United States of America 0.38% | United States Treasury Bill 4.24% |
| United States of America 0.37% | PNC Financial Services Group Inc/The 0.59% |
| United States of America 0.37% | Regions Bank/Birmingham AL 0.52% |
| United States of America 0.37% | Charles Schwab Corp/The 0.50% |
| United States of America 0.36% | Westlake Flooring Master Trust 0.44% |
| United States of America 0.36% | DLLAD 2024-1 LLC 0.44% |
| United States of America 0.36% | UBS Group AG 0.42% |
| United States of America 0.35% | Bank of Montreal 0.41% |
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 Apr 30, 2026 and Jun 30, 2026.
| IUSB iShares Core Universal USD Bond ETF | VUSB Vanguard Ultra-Short Bond ETF | |
|---|---|---|
| Where it sits | Core index fund | Core index fund |
| Issuer | iShares | Vanguard |
| What it is | Core Universal USD Bond | Ultra-Short Bond |
| Total return, 1 year | −0.3% | +3.7% |
| S&P 500 over the same days | +17.5% | +17.5% |
| Gap to the S&P 500 | −17.8 pts | −13.8 pts |
| Expense ratio | 0.06% | 0.10% |
| Holdings | 17819 | 1281 |
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.
VUSB in plain words
VUSB is a cash and treasury bills tracking the Ultra-Short Bond. Over the year to Sep 11, 2026 it returned +3.7% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.10% a year.
Questions people ask
- Which returned more over the last year, IUSB or VUSB?
- In the year to Sep 12, 2026, with distributions reinvested, IUSB returned −0.3% and VUSB returned +3.7%, so VUSB returned more. One year is one year; the longer windows are in the table.
- Which is cheaper, IUSB or VUSB?
- IUSB charges 0.06% a year and VUSB charges 0.10%, 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 VUSB, data as of Sep 12, 2026. https://etfiq.com/compare/any/IUSB-VUSB Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources