Data as of Sep 13, 2026. Both funds on the fields they both publish, from the same sources.
EWY vs IDEV: how they differ
EWY and IDEV hold 0% of their weight in the same names, and EWY returned more over the year.
iShares MSCI South Korea ETF and iShares Core MSCI International Developed Markets ETF.
What they hold in common
By the books each fund has filed, EWY and IDEV hold 0% of their money in the same securities at the same weight.
| Holding | EWY | IDEV |
|---|---|---|
| BLK CSH FND TREASURY SL AGENCY | 0.05% | 0.01% |
| Only in EWY | Only in IDEV |
|---|---|
| SK HYNIX 24.02% | ASML HOLDING 2.29% |
| SAMSUNG ELECTRONICS LTD 22.13% | HSBC HOLDINGS PLC 1.22% |
| SK SQUARE 3.01% | ROCHE PS PAR AG 1.02% |
| KRW CASH 2.49% | ROYAL BANK OF CANADA 0.98% |
| SAMSUNG ELECTRO MECHANICS LTD 2.46% | SHELL PLC 0.91% |
| KB FINANCIAL GROUP 1.92% | MITSUBISHI UFJ FINANCIAL GROUP 0.88% |
| HYUNDAI MOTOR 1.60% | NOVARTIS AG 0.87% |
| SHINHAN FINANCIAL GROUP 1.57% | NESTLE SA 0.85% |
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.
| EWY iShares MSCI South Korea ETF | IDEV iShares Core MSCI International Developed Markets ETF | |
|---|---|---|
| Where it sits | Core index fund | Core index fund |
| Issuer | iShares | iShares |
| What it is | MSCI South Korea | Core MSCI International Developed Markets |
| Total return, 1 year | +147.9% | +18.7% |
| S&P 500 over the same days | +17.5% | +17.5% |
| Gap to the S&P 500 | +130.4 pts | +1.2 pts |
| Expense ratio | 0.59% | 0.04% |
| Already in the S&P 500 | 0.0% | 0.1% |
| Holdings | 80 | 1782 |
EWY in plain words
EWY is an index equity fund tracking the MSCI South Korea. Over the year to Sep 11, 2026 it returned +147.9% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.59% 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 80 positions, with the top ten at 61.9%. It sat 13.9% below its high of Jun 18, 2026 on Sep 11, 2026.
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%.
Questions people ask
- Which returned more over the last year, EWY or IDEV?
- In the year to Sep 13, 2026, with distributions reinvested, EWY returned +147.9% and IDEV returned +18.7%, so EWY returned more. One year is one year; the longer windows are in the table.
- Which is cheaper, EWY or IDEV?
- EWY charges 0.59% a year and IDEV charges 0.04%, so IDEV is cheaper. Fees come from each fund's prospectus.
- How much do EWY and IDEV overlap with the S&P 500?
- By their latest filed holdings, 0% of EWY and 0% of IDEV 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, EWY against IDEV, data as of Sep 13, 2026. https://etfiq.com/compare/any/ewy-vs-idev Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources