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

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

Which is cheaper, BOND or MBB?

BOND charges 0.54% 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

BOND vs MBB: how they differ

BOND and MBB hold 1% of their weight in the same names.

PIMCO Active Bond Exchange-Traded Fund and iShares MBS ETF.

What they hold in common

By the books each fund has filed, BOND and MBB hold 1% of their money in the same securities at the same weight.

Positions BOND and MBB both hold, largest shared weight first
Holding	BOND	MBB
Freddie Mac	0.27%	0.22%
Fannie Mae	0.49%	0.14%
Freddie Mac	0.63%	0.09%
Fannie Mae	0.26%	0.06%
Fannie Mae	0.66%	0.06%
Freddie Mac	0.06%	0.01%
Freddie Mac	0.27%	0.01%
Freddie Mac	0.17%	0.00%
Freddie Mac	0.01%	0.00%
Fannie Mae	0.00%	0.00%
Government National Mortgage Association	0.00%	0.00%
Government National Mortgage Association	0.00%	0.00%

Largest positions each one holds and the other does not
Only in BOND	Only in MBB
UMBS, TBA 4.80%	Freddie Mac 1.07%
PIMCO Mortgage-Backed Securities Active 3.52%	Government National Mortgage Association 0.97%
UMBS, TBA 2.98%	UMBS, TBA 0.85%
United States Treasury 2.93%	Government National Mortgage Association 0.69%
UMBS, TBA 2.36%	UMBS, TBA 0.66%
United States Treasury 2.22%	Government National Mortgage Association 0.56%
UMBS, TBA 2.19%	Government National Mortgage Association 0.55%
UMBS, TBA 1.96%	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 Jun 30, 2026 and May 31, 2026.

BOND and MBB on the fields both publish, as of Sep 12, 2026. Source: ETFIQ.
	BOND PIMCO Active Bond Exchange-Traded Fund	MBB iShares MBS ETF
Where it sits	Core index fund	Core index fund
Issuer	PIMCO	iShares
What it is	Active Bond Exchange-Traded	Mbs
Total return, 1 year	−0.1%	−0.1%
S&P 500 over the same days	+17.5%	+17.5%
Gap to the S&P 500	−17.6 pts	−17.6 pts
Expense ratio	0.54%	0.04%
Holdings	1565	11144

BOND in plain words

BOND is a bond fund tracking the Active Bond Exchange-Traded. 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 0.54% a year. It sat 3.3% below its high of Feb 27, 2026 on Sep 11, 2026.

MBB in plain words

MBB is a bond fund tracking the Mbs. The prospectus expense ratio is 0.04% a year.

Questions people ask

Which returned more over the last year, BOND or MBB?: In the year to Sep 12, 2026, with distributions reinvested, BOND returned −0.1% and MBB returned −0.1%, so MBB returned more. One year is one year; the longer windows are in the table.
Which is cheaper, BOND or MBB?: BOND charges 0.54% a year and MBB charges 0.04%, so MBB is cheaper. Fees come from each fund's prospectus.

Other comparisons

Where to next

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.

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

A comparison is not a recommendation. Standards and sources