Data as of Oct 28, 2026.

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MUB vs SHY: Differences, Returns & Fees

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On Aug 31, 2026 MUB's duration was 7.0 years and SHY's 1.8; MUB charges 0.05% to SHY's 0.15%.

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Net assets on Oct 27, 2026: $54.1bn for iShares National Muni Bond ETF and $27.4bn for iShares 1-3 Year Treasury Bond ETF.

At a glance
−0.4%
MUB total return, 1 year
+1.6%
SHY total return, 1 year
0.05%
MUB expense ratio
0.15%
SHY expense ratio

Pair scorecard

MUB costs 0.10 points a year less; their one-year returns differ by 2.0 points; MUB is 2.0 times larger.

MUB vs SHY: Differences, Returns & Fees
MeasureMUBSHY
Return
Total return, 1 year−0.4%+1.6%
Benchmark
What it tracksICE AMT-Free US National Municipal IndexICE U.S. Treasury 1-3 Year Bond Index
Cost and size
Expense ratio0.05%0.15%
Net assets, as of Oct 27, 2026$54.1bn$27.4bn
Holdings
Holdings in common0%

Holdings in common uses holdings dated Aug 31, 2026. Method

What they share

0%

By the books each fund has filed, MUB and SHY hold 0% of their money in the same securities at the same weight. Holdings dated Aug 31, 2026.

0 half 100%

half

0% in common

Positions both hold · largest shared weight first MUB SHY
Only in one fund ↓
Only in MUB
Board of Regents of the University of Texas System, Series 2025B, due Aug 15, 2036 0.18%
San Antonio Water System, Series 2025D, due May 1, 2055 0.15%
New York State Thruway Authority, Series 2022A, due Mar 15, 2048 0.15%
New York State Dormitory Authority, Series 2019D, due Feb 15, 2047 0.13%
Northwest Independent School District, Series 2025, due Feb 15, 2055 0.12%
Houston Higher Education Finance Corp., Series 2024, due May 15, 2034 0.12%
State of New Jersey, Series 2020A, due Jun 1, 2028 0.12%
Ohio State University (The), Series 2026A, due Jun 1, 2035 0.12%
Only in SHY
U.S. Treasury Notes, due Apr 30, 2028 1.97%
U.S. Treasury Notes, due Jan 31, 2028 1.71%
U.S. Treasury Notes, due Jun 30, 2028 1.61%
U.S. Treasury Notes, due Apr 30, 2029 1.51%
U.S. Treasury Notes, due May 31, 2029 1.49%
U.S. Treasury Notes, due Aug 15, 2027 1.48%
U.S. Treasury Notes, due Jun 30, 2029 1.47%
U.S. Treasury Notes, due Feb 15, 2028 1.40%
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Side by side

MUB iShares National Muni Bond ETF SHY iShares 1-3 Year Treasury Bond ETF
Where it sits Bond ETF Bond ETF
What it is Tracks an index of National Muni Bond Tracks an index of 1-3 Year Treasury Bond
Total return, 1 year −0.4% +1.6%
Its benchmark over the same days not measured +1.7% (BBSB)
Gap to its benchmark not measured −0.1 pts vs BBSB
Expense ratio 0.05% 0.15%
Holdings 7873 90
Net assets, as of Oct 27, 2026 $54.1bn $27.4bn

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

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About each fund
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.

SHY

SHY tracks an index of 1-3 Year Treasury Bond. Over the year to Oct 28, 2026 it returned +1.6% with distributions reinvested, against +1.7% for its benchmark, the ICE U.S. Treasury 1-3 Year Bond Index. The prospectus expense ratio is 0.15% a year.

Questions people ask

Which returned more over the last year, MUB or SHY?
In the year to Oct 28, 2026, with distributions reinvested, MUB returned −0.4% and SHY +1.6%.
Which is cheaper, MUB or SHY?
MUB is cheaper, by 0.10 percentage points a year. That is about $10 on $10,000 held for a year. Fees come from each fund's prospectus.
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ETFIQ, MUB against SHY, data as of Oct 28, 2026. https://etfiq.com/compare/any/mub-vs-shy

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