Data as of Sep 13, 2026. Both funds on the fields they both publish, from the same sources.
IDEV vs IWB: how they differ
IDEV and IWB hold 2% of their weight in the same names, and IDEV returned more over the year.
iShares Core MSCI International Developed Markets ETF and iShares Russell 1000 ETF.
What they hold in common
By the books each fund has filed, IDEV and IWB hold 2% of their money in the same securities at the same weight.
| Holding | IDEV | IWB |
|---|---|---|
| SPOTIFY TECHNOLOGY | 0.26% | 0.12% |
| USD CASH | 0.13% | 0.09% |
| ARISTOCRAT LEISURE | 0.08% | 0.09% |
| MERCK | 0.06% | 0.51% |
| ROCHE PS PAR AG | 1.02% | 0.06% |
| EQT | 0.05% | 0.05% |
| HELVETIA BALOISE HOLDING N AG | 0.07% | 0.05% |
| ADMIRAL GROUP PLC | 0.04% | 0.06% |
| DEUTSCHE TELEKOM N AG | 0.38% | 0.04% |
| PEMBINA PIPELINE | 0.09% | 0.04% |
| RESTAURANTS BRANDS INTERNATIONAL | 0.08% | 0.04% |
| VINCI SA | 0.21% | 0.04% |
| Only in IDEV | Only in IWB |
|---|---|
| ASML HOLDING 2.29% | NVIDIA 7.26% |
| HSBC HOLDINGS PLC 1.22% | APPLE 6.73% |
| ROYAL BANK OF CANADA 0.98% | MICROSOFT 5.21% |
| SHELL PLC 0.91% | AMAZON.COM INC 3.49% |
| MITSUBISHI UFJ FINANCIAL GROUP 0.88% | ALPHABET CLASS A 2.77% |
| NOVARTIS AG 0.87% | BROADCOM INC 2.40% |
| NESTLE SA 0.85% | ALPHABET CLASS C 2.24% |
| ASTRAZENECA PLC 0.83% | META PLATFORMS CLASS A 2.02% |
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.
| IDEV iShares Core MSCI International Developed Markets ETF | IWB iShares Russell 1000 ETF | |
|---|---|---|
| Where it sits | Core index fund | Core index fund |
| Issuer | iShares | iShares |
| What it is | Core MSCI International Developed Markets | Russell 1000 |
| Total return, 1 year | +18.7% | +16.7% |
| S&P 500 over the same days | +17.5% | +17.5% |
| Gap to the S&P 500 | +1.2 pts | −0.8 pts |
| Expense ratio | 0.04% | 0.15% |
| Already in the S&P 500 | 0.1% | 91.9% |
| Holdings | 1782 | 945 |
IDEV in plain words
IDEV is an index equity fund tracking the Core MSCI International Developed Markets. Over the year to Sep 11, 2026 it returned +18.7% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.04% 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 1782 positions, with the top ten at 10.6%.
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 Sep 10, 2026, 92% of the fund by weight is stocks the S&P 500 also holds, across 945 positions, with the top ten at 35.2%.
Questions people ask
- Which returned more over the last year, IDEV or IWB?
- In the year to Sep 13, 2026, with distributions reinvested, IDEV returned +18.7% and IWB returned +16.7%, so IDEV returned more. One year is one year; the longer windows are in the table.
- Which is cheaper, IDEV or IWB?
- IDEV charges 0.04% a year and IWB charges 0.15%, so IDEV is cheaper. Fees come from each fund's prospectus.
- How much do IDEV and IWB overlap with the S&P 500?
- By their latest filed holdings, 0% of IDEV and 92% of IWB by weight is stocks the S&P 500 already holds. Between the two funds, 2% of their books are the same securities at the same weight.
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, IDEV against IWB, data as of Sep 13, 2026. https://etfiq.com/compare/any/idev-vs-iwb Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources