Data as of Oct 28, 2026.

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IAU vs MUB: Differences, Returns & Fees

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IAU is a commodity fund and MUB a bond index fund, and over the year to Oct 28, 2026, IAU returned +2.7% against −0.4%.

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Net assets: $60.1bn on Oct 28, 2026 for iShares Gold Trust, and $54.1bn on Oct 27, 2026 for iShares National Muni Bond ETF.

At a glance
+2.7%
IAU total return, 1 year
−0.4%
MUB total return, 1 year
0.25%
IAU expense ratio
0.05%
MUB expense ratio

Pair scorecard

MUB costs 0.20 points a year less; their one-year returns differ by 3.1 points; IAU is 1.1 times larger.

IAU vs MUB: Differences, Returns & Fees
MeasureIAUMUB
Return
Total return, 1 year+2.7%−0.4%
Drawdown
Below its high24.6%, high on Jan 29, 2026
Benchmark
What it tracksGoldICE AMT-Free US National Municipal Index
Cost and size
Expense ratio0.25%0.05%
Net assets, as of Oct 27, 2026$60.3bn$54.1bn
Holdings
Holdings in commonnot published

Method

Side by side

IAU iShares Gold Trust MUB iShares National Muni Bond ETF
Where it sits Commodity ETF Bond ETF
What it is Holds gold Tracks an index of National Muni Bond
Total return, 1 year +2.7% −0.4%
Its benchmark over the same days +2.5% (GLD) not measured
Gap to its benchmark +0.2 pts vs GLD not measured
Expense ratio 0.25% 0.05%
Holdings not counted 7873
Net assets, IAU as of Oct 28, 2026 and MUB as of Oct 27, 2026 $60.1bn $54.1bn

IAU and MUB on the fields both publish, as of Oct 28, 2026. Source: ETFIQ.

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About each fund
IAU

Its expense ratio is 0.25% a year, for the three months to Jun 30, 2026, as its 10-Q states.

IAU holds gold. Over the year to Oct 28, 2026 it returned +2.7% with distributions reinvested, against +2.5% for its benchmark, the price of gold. It sat 24.6% below its high of Jan 29, 2026 on Oct 28, 2026.

MUB

MUB tracks an index of National Muni Bond. Over the year to Oct 28, 2026 it returned −0.4% with distributions reinvested. The prospectus expense ratio is 0.05% a year.

Questions people ask

Which returned more over the last year, IAU or MUB?
In the year to Oct 28, 2026, with distributions reinvested, IAU returned +2.7% and MUB −0.4%.
Which is cheaper, IAU or MUB?
MUB is cheaper, by 0.20 percentage points a year. That is about $20 on $10,000 held for a year. Fees come from each fund's own filings.
Other comparisons
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ETFIQ, IAU against MUB, data as of Oct 28, 2026. https://etfiq.com/compare/any/iau-vs-mub

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