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

In the year to Oct 28, 2026, with distributions reinvested, IEMG returned +15.3% and MBB −0.8%.

Which is cheaper, IEMG or MBB?

MBB is cheaper, by 0.05 percentage points a year. That is about $5 on $10,000 held for a year. Fees come from each fund's prospectus.

Data as of Oct 28, 2026.

Across categories

IEMG vs MBB: Differences, Returns & Fees

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Over the year to Oct 28, 2026, IEMG returned +15.3% to MBB's −0.8%; 0% of their weight is in the same names.

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Net assets: $150.4bn on Oct 27, 2026 for iShares Core MSCI Emerging Markets ETF, and $35.5bn on Oct 28, 2026 for iShares MBS ETF.

IEMG on its own →MBB on its own →

At a glance

+15.3%

IEMG total return, 1 year

−0.8%

MBB total return, 1 year

0.09%

IEMG expense ratio

0.04%

MBB expense ratio

Pair scorecard

MBB costs 0.05 points a year less; their one-year returns differ by 16.1 points; IEMG is 4.2 times larger.

IEMG vs MBB: Differences, Returns & Fees
Measure	IEMG	MBB
Return
Measure	IEMG	MBB
Total return, 1 year	+15.3%	−0.8%
Drawdown
Measure	IEMG	MBB
Below its high	10.1%, high on Jun 22, 2026
Benchmark
Measure	IEMG	MBB
What it tracks	MSCI Emerging Markets Investable Market Index (IMI)	Bloomberg U.S. MBS Index
Cost and size
Measure	IEMG	MBB
Expense ratio	0.09%	0.04%
Net assets, as of Oct 26, 2026	$148.2bn	$35.6bn
Holdings
Measure	IEMG	MBB
Holdings in common	0%
In the S&P 500, by weight	0%
Top ten holdings, share of the fund	32.7%

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

What they share

By the books each fund has filed, IEMG 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 IEMG MBB

Only in one fund ↓

Only in IEMG

TAIWAN SEMICONDUCTOR MANUFACTURING 14.03%

SAMSUNG ELECTRONICS LTD 6.05%

SK HYNIX 4.31%

TENCENT HOLDINGS 2.32%

ALIBABA GROUP HOLDING 1.60%

MEDIATEK 1.36%

CHINA CONSTRUCTION BANK CORP H 0.83%

SAMSUNG ELECTRONICS NON VOTING PRE 0.80%

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

IEMG iShares Core MSCI Emerging Markets ETF MBB iShares MBS ETF

Where it sits Stock ETF Bond ETF

Issuer iShares iShares

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

Total return, 1 year +15.3% −0.8%

Its benchmark over the same days +16.3% (EEM) −1.1% (SPMB)

Gap to its benchmark −1.0 pts vs EEM +0.3 pts vs SPMB

Expense ratio 0.09% 0.04%

Holdings 2857 10813

Net assets, IEMG as of Oct 27, 2026 and MBB as of Oct 28, 2026 $150.4bn $35.5bn

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

Alert

About each fund

IEMG

IEMG tracks the MSCI Emerging Markets. Over the year to Oct 28, 2026 it returned +15.3% with distributions reinvested, against +16.3% for its benchmark, the MSCI Emerging Markets Index. The prospectus expense ratio is 0.09% 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 2,857 positions, with the top ten at 32.7%. It sat 10.1% below its high of Jun 22, 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. The prospectus expense ratio is 0.04% a year.

Questions people ask

Which returned more over the last year, IEMG or MBB?: In the year to Oct 28, 2026, with distributions reinvested, IEMG returned +15.3% and MBB −0.8%.
Which is cheaper, IEMG or MBB?: MBB is cheaper, by 0.05 percentage points a year. That is about $5 on $10,000 held for a year. Fees come from each fund's prospectus.

Other comparisons

IEMG vs TLT BIL vs IEMG IEMG vs IUSB IEMG vs IGSB MBB vs VWO AVEM vs MBB EEM vs MBB EMXC vs MBB

Where to next

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

Sources and dates

IEMG filings on SEC EDGAR ↗

IEMG prospectus with the expense ratio (SEC) ↗

iShares page for IEMG ↗

MBB filings on SEC EDGAR ↗

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

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