Data as of Sep 12, 2026. Both funds on the fields they both publish, from the same sources.
IDEV vs IWM: how they differ
IDEV and IWM hold 0% of their weight in the same names, and IWM returned more over the year.
iShares Core MSCI International Developed Markets ETF and iShares Russell 2000 ETF.
What they hold in common
By the books each fund has filed, IDEV and IWM hold 0% of their money in the same securities at the same weight.
| Holding | IDEV | IWM |
|---|---|---|
| ENERGY FUELS INCORPORATED | 0.02% | 0.12% |
| SSR MINING INC. | 0.02% | 0.20% |
| BROOKFIELD INFRASTRUCTURE CORPORATION | 0.01% | 0.15% |
| NOVAGOLD RESOURCES INC. | 0.01% | 0.07% |
| KEEL INFRASTRUCTURE CORP. | 0.01% | 0.10% |
| Only in IDEV | Only in IWM |
|---|---|
| ASML Holding N.V. 1.95% | Moog, Inc. 0.38% |
| HSBC HOLDINGS PLC 1.09% | Hut 8 Corp. 0.37% |
| ASTRAZENECA PLC 1.02% | Viasat, Inc. 0.35% |
| Novartis AG 0.97% | BrightSpring Health Services, Inc. 0.35% |
| SHELL PLC 0.90% | Cytokinetics, Inc. 0.35% |
| Nestle S.A. 0.90% | MaxLinear, Inc. 0.34% |
| ROYAL BANK OF CANADA 0.87% | Argan, Inc. 0.34% |
| Siemens Aktiengesellschaft 0.78% | UMB Financial Corp. 0.33% |
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.
| IDEV iShares Core MSCI International Developed Markets ETF | IWM iShares Russell 2000 ETF | |
|---|---|---|
| Where it sits | Core index fund | Core index fund |
| Issuer | iShares | iShares |
| What it is | Core MSCI International Developed Markets | Russell 2000 |
| Total return, 1 year | +18.7% | +21.2% |
| S&P 500 over the same days | +17.5% | +17.5% |
| Gap to the S&P 500 | +1.2 pts | +3.7 pts |
| Expense ratio | 0.04% | 0.19% |
| Already in the S&P 500 | 0.1% | 0.0% |
| Holdings | 2268 | 2014 |
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 Apr 30, 2026, 0% of the fund by weight is stocks the S&P 500 also holds, across 2268 positions, with the top ten at 10.2%.
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 Jun 30, 2026, 0% of the fund by weight is stocks the S&P 500 also holds, across 2014 positions, with the top ten at 3.4%. It sat 5.3% below its high of Aug 14, 2026 on Sep 11, 2026.
Questions people ask
- Which returned more over the last year, IDEV or IWM?
- In the year to Sep 12, 2026, with distributions reinvested, IDEV returned +18.7% and IWM returned +21.2%, so IWM returned more. One year is one year; the longer windows are in the table.
- Which is cheaper, IDEV or IWM?
- IDEV charges 0.04% a year and IWM charges 0.19%, so IDEV is cheaper. Fees come from each fund's prospectus.
- How much do IDEV and IWM overlap with the S&P 500?
- By their latest filed holdings, 0% of IDEV and 0% of IWM 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.
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, IDEV against IWM, data as of Sep 12, 2026. https://etfiq.com/compare/any/IDEV-IWM Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources