Data as of Sep 13, 2026. Both funds on the fields they both publish, from the same sources.
IWC vs VUSB: how they differ
IWC and VUSB hold 0% of their weight in the same names, and IWC returned more over the year.
iShares Micro-Cap ETF and Vanguard Ultra-Short Bond ETF.
What they hold in common
By the books each fund has filed, IWC and VUSB hold 0% of their money in the same securities at the same weight.
| Only in IWC | Only in VUSB |
|---|---|
| CAREDX 0.61% | United States Treasury Bill 4.24% |
| SELLAS LIFE SCIENCES GROUP INC 0.60% | United States Treasury Note/Bond 0.68% |
| NURIX THERAPEUTICS 0.59% | PNC Financial Services Group Inc/The 0.59% |
| PENGUIN SOLUTIONS INC 0.58% | United States Treasury Note/Bond 0.53% |
| OUSTER 0.52% | Regions Bank/Birmingham AL 0.52% |
| VIRIDIAN THERAPEUTICS ORS 0.48% | US Bancorp 0.51% |
| INTERFACE 0.47% | Charles Schwab Corp/The 0.50% |
| MBX BIOSCIENCES 0.45% | Truist Bank 0.45% |
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.
| IWC iShares Micro-Cap ETF | VUSB Vanguard Ultra-Short Bond ETF | |
|---|---|---|
| Where it sits | Core index fund | Core index fund |
| Issuer | iShares | Vanguard |
| What it is | Russell Microcap | Ultra-Short Bond |
| Total return, 1 year | +31.3% | +3.7% |
| S&P 500 over the same days | +17.5% | +17.5% |
| Gap to the S&P 500 | +13.8 pts | −13.8 pts |
| Expense ratio | not published | 0.10% |
| Holdings | 1252 | 1281 |
IWC in plain words
IWC is an index equity fund tracking the Russell Microcap. Over the year to Sep 11, 2026 it returned +31.3% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. By its holdings filed for Sep 10, 2026, 92% of the fund by weight is stocks the S&P 500 also holds, across 1252 positions, with the top ten at 5.1%. It sat 5.0% below its high of Aug 14, 2026 on Sep 11, 2026.
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, IWC or VUSB?
- In the year to Sep 13, 2026, with distributions reinvested, IWC returned +31.3% and VUSB returned +3.7%, so IWC returned more. One year is one year; the longer windows are in the table.
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, IWC against VUSB, data as of Sep 13, 2026. https://etfiq.com/compare/any/iwc-vs-vusb Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources