Data as of Sep 13, 2026. Both funds on the fields they both publish, from the same sources.
IUSB vs SPYM: how they differ
IUSB and SPYM hold 0% of their weight in the same names, and SPYM returned more over the year.
iShares Core Universal USD Bond ETF and State Street(R) SPDR(R) Portfolio S&P 500(R) ETF.
What they hold in common
By the books each fund has filed, IUSB and SPYM hold 0% of their money in the same securities at the same weight.
| Only in IUSB | Only in SPYM |
|---|---|
| United States of America 0.38% | NVIDIA CORP 8.07% |
| United States of America 0.37% | APPLE INC 7.32% |
| United States of America 0.37% | MICROSOFT CORP 5.58% |
| United States of America 0.37% | AMAZON.COM INC 3.76% |
| United States of America 0.36% | ALPHABET INC CL A 2.98% |
| United States of America 0.36% | BROADCOM INC 2.61% |
| United States of America 0.36% | ALPHABET INC CL C 2.38% |
| United States of America 0.35% | META PLATFORMS INC CLASS A 2.16% |
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 Sep 10, 2026.
| IUSB iShares Core Universal USD Bond ETF | SPYM State Street(R) SPDR(R) Portfolio S&P 500(R) ETF | |
|---|---|---|
| Where it sits | Core index fund | Core index fund |
| Issuer | iShares | State Street |
| What it is | Core Universal USD Bond | S&P 500 |
| Total return, 1 year | −0.3% | +17.6% |
| S&P 500 over the same days | +17.5% | +17.5% |
| Gap to the S&P 500 | −17.8 pts | +0.1 pts |
| Expense ratio | 0.06% | 1.30% |
| Holdings | 17819 | 507 |
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.
SPYM in plain words
SPYM is an index equity fund tracking the S&P 500. Over the year to Sep 11, 2026 it returned +17.6% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 1.30% a year. By its holdings filed for Sep 10, 2026, 100% of the fund by weight is stocks the S&P 500 also holds, across 507 positions, with the top ten at 38.1%.
Questions people ask
- Which returned more over the last year, IUSB or SPYM?
- In the year to Sep 13, 2026, with distributions reinvested, IUSB returned −0.3% and SPYM returned +17.6%, so SPYM returned more. One year is one year; the longer windows are in the table.
- Which is cheaper, IUSB or SPYM?
- IUSB charges 0.06% a year and SPYM charges 1.30%, 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 SPYM, data as of Sep 13, 2026. https://etfiq.com/compare/any/iusb-vs-spym Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources