Get the weekly note

Data as of Sep 12, 2026. Both funds on the fields they both publish, from the same sources.

ETFIQetfiq.com · independent ETF data

EWY vs MBB: how they differ

EWY and MBB hold 0% of their weight in the same names, and EWY returned more over the year.

iShares MSCI South Korea ETF and iShares MBS ETF.

What they hold in common

By the books each fund has filed, EWY and MBB hold 0% of their money in the same securities at the same weight.

Largest positions each one holds and the other does not
Only in EWYOnly in MBB
SK hynix Inc. 31.02%Freddie Mac 1.07%
SAMSUNG ELECTRO-MECHANICS CO.,LTD 3.44%Government National Mortgage Association 0.97%
SK Square Co., Ltd. 3.10%UMBS, TBA 0.85%
HYUNDAI MOTOR COMPANY 2.45%Government National Mortgage Association 0.69%
KB Financial Group Inc. 1.40%UMBS, TBA 0.66%
HYUNDAI MOBIS CO.,LTD 1.22%Government National Mortgage Association 0.56%
DOOSAN ENERBILITY CO., LTD. 1.22%Government National Mortgage Association 0.55%
SAMSUNG SDI CO., LTD. 1.15%Government National Mortgage Association 0.54%

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 May 31, 2026.

EWY and MBB on the fields both publish, as of Sep 12, 2026. Source: ETFIQ.
EWY
iShares MSCI South Korea ETF
MBB
iShares MBS ETF
Where it sitsCore index fundCore index fund
IssueriSharesiShares
What it isMSCI South KoreaMbs
Total return, 1 year+147.9%−0.1%
S&P 500 over the same days+17.5%+17.5%
Gap to the S&P 500+130.4 pts−17.6 pts
Expense ratio0.59%0.04%
Holdings8211144

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 May 31, 2026, 0% of the fund by weight is stocks the S&P 500 also holds, across 82 positions, with the top ten at 70.0%. It sat 13.9% below its high of Jun 18, 2026 on Sep 11, 2026.

MBB in plain words

MBB is a bond fund tracking the Mbs. Over the year to Sep 11, 2026 it returned −0.1% 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. It sat 3.3% below its high of Feb 27, 2026 on Sep 11, 2026.

Questions people ask

Which returned more over the last year, EWY or MBB?
In the year to Sep 12, 2026, with distributions reinvested, EWY returned +147.9% and MBB returned −0.1%, so EWY returned more. One year is one year; the longer windows are in the table.
Which is cheaper, EWY or MBB?
EWY charges 0.59% a year and MBB charges 0.04%, so MBB 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.

EWY against MBB, ETFIQ, data as of Sep 12, 2026. Every figure is arithmetic on a named public source; the method is at etfiq.com/methodology. A comparison is not a recommendation.

Cite this page. ETFIQ, EWY against MBB, data as of Sep 12, 2026. https://etfiq.com/compare/any/EWY-MBB Free to use with attribution; the underlying files are at Open data.

A comparison is not a recommendation. Standards and sources