Data as of Oct 28, 2026.

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MUB vs SPY: Differences, Returns & Fees

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Over the year to Oct 28, 2026, MUB returned −0.4% to SPY's +13.6%; 0% of their weight is in the same names.

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Net assets on Oct 27, 2026: $54.1bn for iShares National Muni Bond ETF and $814.8bn for SPDR S&P 500 ETF Trust.

At a glance
−0.4%
MUB total return, 1 year
+13.6%
SPY total return, 1 year
0.05%
MUB expense ratio
0.09%
SPY expense ratio

Pair scorecard

MUB costs 0.04 points a year less; their one-year returns differ by 14.0 points; SPY is 15.1 times larger.

MUB vs SPY: Differences, Returns & Fees
MeasureMUBSPY
Return
Total return, 1 year−0.4%+13.6%
Benchmark
What it tracksICE AMT-Free US National Municipal IndexS&P 500 Index
Cost and size
Expense ratio0.05%0.09%
Net assets, as of Oct 27, 2026$54.1bn$814.8bn
Holdings
Holdings in common0%
In the S&P 500, by weight100%
Top ten holdings, share of the fund38.1%

Holdings in common uses holdings dated Oct 27, 2026. Method

What they share

0%

By the books each fund has filed, MUB and SPY hold 0% of their money in the same securities at the same weight. Holdings dated Oct 27, 2026.

0 half 100%

half

0% in common

Positions both hold · largest shared weight first MUB SPY
Only in one fund ↓
Only in MUB
UNIVERSITY TEX UNIV REVS 0.16%
SAN ANTONIO TEX WTR REV 0.13%
NEW YORK ST TWY AUTH ST PERS I 0.12%
NORTHWEST TEX INDPT SCH DIST 0.12%
OKLAHOMA TRANSN AUTH OK F/K/A 0.12%
HOUSTON TEX HIGHER ED FIN CORP 0.11%
NEW JERSEY ST 0.11%
OHIO ST UNIV GEN RCPTS 0.11%
Only in SPY
NVIDIA CORP 7.92%
APPLE INC 7.61%
MICROSOFT CORP 5.93%
AMAZON.COM INC 3.73%
ALPHABET INC CL A 2.83%
BROADCOM INC 2.45%
ALPHABET INC CL C 2.26%
META PLATFORMS INC CLASS A 2.06%
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Side by side

MUB iShares National Muni Bond ETF SPY SPDR S&P 500 ETF Trust
Where it sits Bond ETF Stock ETF
What it is Tracks an index of National Muni Bond Tracks the S&P 500
Total return, 1 year −0.4% +13.6%
Its benchmark over the same days not measured +13.7% (VOO)
Gap to its benchmark not measured −0.1 pts vs VOO
Expense ratio 0.05% 0.09%
Holdings 7873 504
Net assets, as of Oct 27, 2026 $54.1bn $814.8bn

MUB and SPY 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.

SPY

SPY tracks the S&P 500. Over the year to Oct 28, 2026 it returned +13.6% with distributions reinvested, against +13.7% for its benchmark, the S&P 500 Index. The prospectus expense ratio is 0.09% a year. By its holdings published by its issuer for Oct 27, 2026, 100% of the fund by weight is stocks the S&P 500 also holds, across 504 positions, with the top ten at 38.1%.

Questions people ask

Which returned more over the last year, MUB or SPY?
In the year to Oct 28, 2026, with distributions reinvested, MUB returned −0.4% and SPY +13.6%.
Which is cheaper, MUB or SPY?
MUB is cheaper, by 0.04 percentage points a year. That is about $4 on $10,000 held for a year. Fees come from each fund's prospectus.
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ETFIQ, MUB against SPY, data as of Oct 28, 2026. https://etfiq.com/compare/any/mub-vs-spy

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