Data as of Sep 13, 2026. Both funds on the fields they both publish, from the same sources.
IWM vs IYW: how they differ
IWM and IYW hold 0% of their weight in the same names, and IYW returned more over the year.
iShares Russell 2000 ETF and iShares U.S. Technology ETF.
What they hold in common
By the books each fund has filed, IWM and IYW hold 0% of their money in the same securities at the same weight.
| Holding | IWM | IYW |
|---|---|---|
| USD CASH | 0.17% | 0.05% |
| BLK CSH FND TREASURY SL AGENCY | 0.29% | 0.03% |
| Only in IWM | Only in IYW |
|---|---|
| MOOG INC CLASS A 0.34% | NVIDIA 14.10% |
| UMB FINANCIAL 0.34% | APPLE 13.20% |
| CYTOKINETICS 0.32% | MICROSOFT 10.75% |
| GLAUKOS 0.32% | ALPHABET CLASS A 5.48% |
| JFROG 0.32% | ALPHABET CLASS C 4.44% |
| BRIGHTSPRING HEALTH SERVICES INC 0.31% | META PLATFORMS CLASS A 4.17% |
| BRINKER INTERNATIONAL INC 0.31% | BROADCOM INC 4.07% |
| FIRSTCASH HOLDINGS INC 0.31% | MICRON TECHNOLOGY 3.35% |
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 Sep 10, 2026.
| IWM iShares Russell 2000 ETF | IYW iShares U.S. Technology ETF | |
|---|---|---|
| Where it sits | Core index fund | Core index fund |
| Issuer | iShares | iShares |
| What it is | Russell 2000 | U.S. Technology |
| Total return, 1 year | +21.2% | +34.9% |
| S&P 500 over the same days | +17.5% | +17.5% |
| Gap to the S&P 500 | +3.7 pts | +17.4 pts |
| Expense ratio | 0.19% | 0.37% |
| Already in the S&P 500 | 0.0% | 95.5% |
| Holdings | 1749 | 151 |
IWM in plain words
IWM is an index equity fund tracking the Russell 2000. Over the year to Sep 11, 2026 it returned +21.2% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.19% a year. By its holdings filed for Sep 10, 2026, 0% of the fund by weight is stocks the S&P 500 also holds, across 1749 positions, with the top ten at 3.2%. It sat 5.3% below its high of Aug 14, 2026 on Sep 11, 2026.
IYW in plain words
IYW is an index equity fund tracking the U.S. Technology. Over the year to Sep 11, 2026 it returned +34.9% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.37% a year. By its holdings filed for Sep 10, 2026, 96% of the fund by weight is stocks the S&P 500 also holds, across 151 positions, with the top ten at 64.9%.
Questions people ask
- Which returned more over the last year, IWM or IYW?
- In the year to Sep 13, 2026, with distributions reinvested, IWM returned +21.2% and IYW returned +34.9%, so IYW returned more. One year is one year; the longer windows are in the table.
- Which is cheaper, IWM or IYW?
- IWM charges 0.19% a year and IYW charges 0.37%, so IWM is cheaper. Fees come from each fund's prospectus.
- How much do IWM and IYW overlap with the S&P 500?
- By their latest filed holdings, 0% of IWM and 96% of IYW by weight is stocks the S&P 500 already holds. Between the two funds, 0% of their books are the same securities at the same weight.
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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, IWM against IYW, data as of Sep 13, 2026. https://etfiq.com/compare/any/iwm-vs-iyw Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources