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

In the year to Sep 13, 2026, with distributions reinvested, IWB returned +16.7% and MUB returned +0.1%, so IWB returned more. One year is one year; the longer windows are in the table.

Which is cheaper, IWB or MUB?

IWB charges 0.15% a year and MUB charges 0.05%, so MUB is cheaper. Fees come from each fund's prospectus.

Data as of Sep 13, 2026. Both funds on the fields they both publish, from the same sources.

ETFIQetfiq.com · independent ETF data

IWB vs MUB: how they differ

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

iShares Russell 1000 ETF and iShares National Muni Bond ETF.

What they hold in common

By the books each fund has filed, IWB 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 IWB	Only in MUB
NVIDIA 7.26%	HOUSTON TEX HIGHER ED FIN CORP 0.13%
APPLE 6.73%	DISTRICT COLUMBIA UNIV REV 0.10%
MICROSOFT 5.21%	ECTOR CNTY TEX 0.08%
AMAZON.COM INC 3.49%	NEW ORLEANS LA 0.08%
ALPHABET CLASS A 2.77%	PORT TACOMA WASH REV 0.08%
BROADCOM INC 2.40%	CONTRA COSTA CALIF CMNTY COLLE 0.06%
ALPHABET CLASS C 2.24%	LOS ANGELES CALIF 0.06%
META PLATFORMS CLASS A 2.02%	LOS ANGELES CNTY CALIF 0.06%

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 Sep 10, 2026.

IWB and MUB on the fields both publish, as of Sep 13, 2026. Source: ETFIQ.
	IWB iShares Russell 1000 ETF	MUB iShares National Muni Bond ETF
Where it sits	Core index fund	Core index fund
Issuer	iShares	iShares
What it is	Russell 1000	National Muni Bond
Total return, 1 year	+16.7%	+0.1%
S&P 500 over the same days	+17.5%	+17.5%
Gap to the S&P 500	−0.8 pts	−17.4 pts
Expense ratio	0.15%	0.05%
Holdings	945	5215

IWB in plain words

IWB is an index equity fund tracking the Russell 1000. Over the year to Sep 11, 2026 it returned +16.7% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.15% a year. By its holdings filed for Sep 10, 2026, 92% of the fund by weight is stocks the S&P 500 also holds, across 945 positions, with the top ten at 35.2%.

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, IWB or MUB?: In the year to Sep 13, 2026, with distributions reinvested, IWB returned +16.7% and MUB returned +0.1%, so IWB returned more. One year is one year; the longer windows are in the table.
Which is cheaper, IWB or MUB?: IWB charges 0.15% 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.

IWB against MUB, ETFIQ, data as of Sep 13, 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, IWB against MUB, data as of Sep 13, 2026. https://etfiq.com/compare/any/iwb-vs-mub Free to use with attribution; the underlying files are at Open data.

A comparison is not a recommendation. Standards and sources