Which returned more over the last year, IUSB or MUB?

In the year to Sep 12, 2026, with distributions reinvested, IUSB returned −0.3% and MUB returned +0.1%, so MUB returned more. One year is one year; the longer windows are in the table.

Which is cheaper, IUSB or MUB?

IUSB charges 0.06% a year and MUB charges 0.05%, so MUB 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

IUSB vs MUB: how they differ

IUSB and MUB hold 0% of their weight in the same names.

iShares Core Universal USD Bond ETF and iShares National Muni Bond ETF.

What they hold in common

By the books each fund has filed, IUSB and MUB 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 IUSB	Only in MUB
United States of America 0.38%	Board of Regents of the University of Te 0.20%
United States of America 0.37%	New York State Thruway Authority 0.16%
United States of America 0.37%	New York State Dormitory Authority 0.14%
United States of America 0.37%	Houston Higher Education Finance Corp. 0.13%
United States of America 0.36%	Northwest Independent School District 0.13%
United States of America 0.36%	Ohio State University (The) 0.13%
United States of America 0.36%	State of New Jersey 0.13%
United States of America 0.35%	State of California 0.13%

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.

IUSB and MUB on the fields both publish, as of Sep 12, 2026. Source: ETFIQ.
	IUSB iShares Core Universal USD Bond ETF	MUB iShares National Muni Bond ETF
Where it sits	Core index fund	Core index fund
Issuer	iShares	iShares
What it is	Core Universal USD Bond	National Muni Bond
Total return, 1 year	−0.3%	+0.1%
S&P 500 over the same days	+17.5%	+17.5%
Gap to the S&P 500	−17.8 pts	−17.4 pts
Expense ratio	0.06%	0.05%
Holdings	17819	6603

IUSB in plain words

IUSB is a bond fund tracking the Core Universal USD Bond. Over the year to Sep 11, 2026 it returned −0.3% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.06% a year.

MUB in plain words

MUB is a bond fund tracking the National Muni Bond. 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 0.05% a year. It sat 3.6% below its high of Jul 6, 2026 on Sep 11, 2026.

Questions people ask

Which returned more over the last year, IUSB or MUB?: In the year to Sep 12, 2026, with distributions reinvested, IUSB returned −0.3% and MUB returned +0.1%, so MUB returned more. One year is one year; the longer windows are in the table.
Which is cheaper, IUSB or MUB?: IUSB charges 0.06% a year and MUB charges 0.05%, so MUB 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.

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

A comparison is not a recommendation. Standards and sources