Which returned more over the last year, IDEV or MBB?

In the year to Sep 12, 2026, with distributions reinvested, IDEV returned +18.7% and MBB returned −0.1%, so IDEV returned more. One year is one year; the longer windows are in the table.

Which is cheaper, IDEV or MBB?

IDEV charges 0.04% a year and MBB charges 0.04%, so IDEV is cheaper. Fees come from each fund's prospectus.

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

ETFIQetfiq.com · independent ETF data

IDEV vs MBB: how they differ

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

iShares Core MSCI International Developed Markets ETF and iShares MBS ETF.

What they hold in common

By the books each fund has filed, IDEV 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 IDEV	Only in MBB
ASML Holding N.V. 1.95%	Freddie Mac 1.07%
HSBC HOLDINGS PLC 1.09%	Government National Mortgage Association 0.97%
ASTRAZENECA PLC 1.02%	UMBS, TBA 0.85%
Novartis AG 0.97%	Government National Mortgage Association 0.69%
SHELL PLC 0.90%	UMBS, TBA 0.66%
Nestle S.A. 0.90%	Government National Mortgage Association 0.56%
ROYAL BANK OF CANADA 0.87%	Government National Mortgage Association 0.55%
Siemens Aktiengesellschaft 0.78%	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 Apr 30, 2026 and May 31, 2026.

IDEV and MBB on the fields both publish, as of Sep 12, 2026. Source: ETFIQ.
	IDEV iShares Core MSCI International Developed Markets ETF	MBB iShares MBS ETF
Where it sits	Core index fund	Core index fund
Issuer	iShares	iShares
What it is	Core MSCI International Developed Markets	Mbs
Total return, 1 year	+18.7%	−0.1%
S&P 500 over the same days	+17.5%	+17.5%
Gap to the S&P 500	+1.2 pts	−17.6 pts
Expense ratio	0.04%	0.04%
Holdings	2268	11144

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%.

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. 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, IDEV or MBB?: In the year to Sep 12, 2026, with distributions reinvested, IDEV returned +18.7% and MBB returned −0.1%, so IDEV returned more. One year is one year; the longer windows are in the table.
Which is cheaper, IDEV or MBB?: IDEV charges 0.04% a year and MBB charges 0.04%, so IDEV is cheaper. Fees come from each fund's prospectus.

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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.

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

A comparison is not a recommendation. Standards and sources