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

In the year to Sep 12, 2026, with distributions reinvested, AGG returned −0.7% and MBB returned −0.1%, so MBB returned more. One year is one year; the longer windows are in the table.

Which is cheaper, AGG or MBB?

AGG charges 0.03% a year and MBB charges 0.04%, so AGG 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

AGG vs MBB: how they differ

AGG and MBB are both bond index funds, and over the year MBB returned more, −0.1% against −0.7%.

iShares Core U.S. Aggregate Bond ETF and iShares MBS ETF.

AGG and MBB on the fields both publish, as of Sep 12, 2026. Source: ETFIQ.
	AGG iShares Core U.S. Aggregate Bond ETF	MBB iShares MBS ETF
Where it sits	Core index fund	Core index fund
Issuer	iShares	iShares
What it is	US aggregate bonds	Mbs
Total return, 1 year	−0.7%	−0.1%
S&P 500 over the same days	+17.5%	+17.5%
Gap to the S&P 500	−18.2 pts	−17.6 pts
Expense ratio	0.03%	0.04%
Holdings	not filed	11144

AGG in plain words

AGG is a bond fund tracking the US aggregate bonds. Over the year to Sep 11, 2026 it returned −0.7% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.03% a year. It sat 3.7% below its high of Aug 4, 2020 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, AGG or MBB?: In the year to Sep 12, 2026, with distributions reinvested, AGG returned −0.7% and MBB returned −0.1%, so MBB returned more. One year is one year; the longer windows are in the table.
Which is cheaper, AGG or MBB?: AGG charges 0.03% a year and MBB charges 0.04%, so AGG 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.

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

A comparison is not a recommendation. Standards and sources