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

In the year to Oct 28, 2026, with distributions reinvested, IDEV returned +13.4% and MBB −0.8%.

Which is cheaper, IDEV or MBB?

Neither: IDEV and MBB both charge 0.04% a year. Fees come from each fund's prospectus.

Data as of Oct 28, 2026.

Across categories

IDEV vs MBB: Differences, Returns & Fees

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Over the year to Oct 28, 2026, IDEV returned +13.4% to MBB's −0.8%; 0% of their weight is in the same names.

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Net assets on Oct 28, 2026: $34.0bn for iShares Core MSCI International Developed Markets ETF and $35.5bn for iShares MBS ETF.

IDEV on its own →MBB on its own →

At a glance

+13.4%

IDEV total return, 1 year

−0.8%

MBB total return, 1 year

0.04%

IDEV expense ratio

0.04%

MBB expense ratio

Pair scorecard

Both cost 0.04% a year; their one-year returns differ by 14.2 points.

Points (pts) are percentage points.

IDEV vs MBB: Differences, Returns & Fees
Measure	IDEV	MBB
Return
Measure	IDEV	MBB
Total return, 1 year	+13.4%	−0.8%
Drawdown
Measure	IDEV	MBB
Below its high	4.4%, high on Aug 25, 2026
Benchmark
Measure	IDEV	MBB
What it tracks	MSCI World ex USA Investable Market Index	Bloomberg U.S. MBS Index
Cost and size
Measure	IDEV	MBB
Expense ratio	0.04%	0.04%
Net assets	$34.0bn	$35.5bn
Holdings
Measure	IDEV	MBB
Holdings in common	0%
In the S&P 500, by weight	0%
Top ten holdings, share of the fund	10.9%

Holdings in common uses holdings dated Oct 27, 2026. Method

What they share

By the books each fund has filed, IDEV and MBB hold 0% of their money in the same securities at the same weight. Holdings dated Oct 27, 2026.

50%

0 half 100%

half

0% in common

Positions both hold · largest shared weight first IDEV MBB

Only in one fund ↓

Only in IDEV

ASML HOLDING 2.23%

ROCHE PS PAR AG 1.18%

SHELL 1.06%

HSBC HOLDINGS PLC 1.03%

NOVARTIS AG 1.00%

ROYAL BANK OF CANADA 0.98%

ASTRAZENECA PLC 0.90%

NESTLE SA 0.90%

Only in MBB

BLACKROCK CASH CL INST SL AGENCY 5.45%

FHLMC 30YR UMBS SUPER 1.05%

UMBS 30YR TBA(REG A) 0.60%

GNMA2 30YR 0.59%

GNMA2 30YR 0.54%

FNMA 30YR UMBS 0.53%

GNMA2 30YR 0.53%

GNMA2 30YR 0.52%

Check overlap with more funds →

Side by side

IDEV iShares Core MSCI International Developed Markets ETF MBB iShares MBS ETF

Where it sits Stock ETF Bond ETF

Issuer iShares iShares

What it is Tracks the MSCI International Developed Markets Tracks an index of mortgage-backed securities

Total return, 1 year +13.4% −0.8%

Its benchmark over the same days +14.3% (ACWX) −1.1% (SPMB)

Gap to its benchmark −0.9 pts vs ACWX +0.3 pts vs SPMB

Expense ratio 0.04% 0.04%

Holdings 2317 10813

Net assets $34.0bn $35.5bn

IDEV and MBB on the fields both publish, as of Oct 28, 2026. Source: ETFIQ.

Alert

About each fund

IDEV

IDEV tracks the MSCI International Developed Markets. Over the year to Oct 28, 2026 it returned +13.4% with distributions reinvested, against +14.3% for its benchmark, the MSCI ACWI ex USA Index. The prospectus expense ratio is 0.04% a year. By its holdings published by its issuer for Oct 27, 2026, 0% of the fund by weight is stocks the S&P 500 also holds, across 2,317 positions, with the top ten at 10.9%. It sat 4.4% below its high of Aug 25, 2026 on Oct 28, 2026.

MBB

MBB tracks an index of mortgage-backed securities. Over the year to Oct 28, 2026 it returned −0.8% with distributions reinvested, against −1.1% for its benchmark, the Bloomberg U.S. MBS Index.

Questions people ask

Which returned more over the last year, IDEV or MBB?: In the year to Oct 28, 2026, with distributions reinvested, IDEV returned +13.4% and MBB −0.8%.
Which is cheaper, IDEV or MBB?: Neither: IDEV and MBB both charge 0.04% a year. Fees come from each fund's prospectus.

Other comparisons

IDEV vs TLT IDEV vs IUSB IDEV vs SHV IDEV vs VTIP IXUS vs MBB MBB vs VEU MBB vs SCHF MBB vs VXUS

Where to next

IDEV on its own →MBB on its own →Hold both: look the portfolio through →Rankings →IDEV dividend history →IDEV holdings →MBB dividend history →MBB holdings →Standards and sources →

Sources and dates

IDEV and MBB filings on SEC EDGAR ↗

IDEV prospectus with the expense ratio (SEC) ↗

iShares page for IDEV ↗

MBB prospectus with the expense ratio (SEC) ↗

iShares page for MBB ↗

Links are sources, not endorsements. A comparison is not a recommendation.

How this is computed

Overlap adds up the smaller of the two weights for each security both funds hold.

Cite this pageCitation, APA and Markdown

ETFIQ, IDEV against MBB, data as of Oct 28, 2026. https://etfiq.com/compare/any/idev-vs-mbb

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Free to use with attribution for data ETFIQ computes; issuer data stays under its owner's terms.