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

In the year to Sep 12, 2026, with distributions reinvested, IAU returned +19.2% and MBB returned −0.1%, so IAU returned more. One year is one year; the longer windows are in the table.

Which is cheaper, IAU or MBB?

IAU charges 0.25% a year and MBB charges 0.04%, so MBB 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

IAU vs MBB: how they differ

IAU is a commodity fund and MBB a bond index fund, and over the year IAU returned more, +19.2% against −0.1%.

iShares Gold Trust and iShares MBS ETF.

IAU and MBB on the fields both publish, as of Sep 12, 2026. Source: ETFIQ.
	IAU iShares Gold Trust	MBB iShares MBS ETF
Where it sits	Core index fund	Core index fund
Issuer	iShares	iShares
What it is	Gold	Mbs
Total return, 1 year	+19.2%	−0.1%
S&P 500 over the same days	+17.5%	+17.5%
Gap to the S&P 500	+1.7 pts	−17.6 pts
Expense ratio	0.25%	0.04%
Holdings	not filed	11144

IAU in plain words

IAU is a commodity fund tracking the Gold. Over the year to Sep 11, 2026 it returned +19.2% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.25% a year. It sat 19.6% below its high of Jan 29, 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, IAU or MBB?: In the year to Sep 12, 2026, with distributions reinvested, IAU returned +19.2% and MBB returned −0.1%, so IAU returned more. One year is one year; the longer windows are in the table.
Which is cheaper, IAU or MBB?: IAU charges 0.25% a year and MBB charges 0.04%, so MBB 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.

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

A comparison is not a recommendation. Standards and sources