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

In the year to Sep 12, 2026, with distributions reinvested, BNDX 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, BNDX or MBB?

BNDX charges 0.07% 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

BNDX vs MBB: how they differ

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

Vanguard Total International Bond Index Fund and iShares MBS ETF.

What they hold in common

By the books each fund has filed, BNDX 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 BNDX	Only in MBB
French Republic Government Bond OAT 0.18%	Freddie Mac 1.07%
Bundesschatzanweisungen 0.14%	Government National Mortgage Association 0.97%
Canadian Government Bond 0.13%	UMBS, TBA 0.85%
Canadian Government Bond 0.10%	Government National Mortgage Association 0.69%
Canadian Government Bond 0.10%	UMBS, TBA 0.66%
Canadian Government Bond 0.09%	Government National Mortgage Association 0.56%
Canadian Government Bond 0.08%	Government National Mortgage Association 0.55%
Canadian Government Bond 0.08%	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.

BNDX and MBB on the fields both publish, as of Sep 12, 2026. Source: ETFIQ.
	BNDX Vanguard Total International Bond Index Fund	MBB iShares MBS ETF
Where it sits	Core index fund	Core index fund
Issuer	Vanguard	iShares
What it is	Total International Bond	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	0.07%	0.04%
Holdings	6707	11144

BNDX in plain words

BNDX is a bond fund tracking the Total International Bond. 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 0.07% a year.

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, BNDX or MBB?: In the year to Sep 12, 2026, with distributions reinvested, BNDX 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, BNDX or MBB?: BNDX charges 0.07% 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.

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

A comparison is not a recommendation. Standards and sources