NYSE Arca · Muni National Interm · USD · ETF

iShares National Muni Bond ETF (MUB) ETF Analysis

MUB

Expense ratio 0.05% Yield 3.4% Assets $46.62B Since September 7, 2007 Family iShares

Last Updated: October 21, 2026

$102.45

+$0.10 (+0.10%)

October 21, 2026 · Market close

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Price History

Hover for the daily close. The dotted line marks the period open.

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MUB Annualized Returns

With dividends reinvested · as of October 21, 2026

Period	Total return	Annualized	$100 becomes	$300 becomes
1 year	−1.66%	−1.66%	$98.34	$295.01
3 years	+10.91%	+3.51%	$110.91	$332.74
5 years	+1.93%	+0.38%	$101.93	$305.79
10 years	+17.95%	+1.66%	$117.95	$353.86

Returns are total returns computed from daily closes, with dividends reinvested. As of October 21, 2026.

MUB Return by Calendar Year

2016 and 2026 are partial years

+7.06%−7.35%−2.01%

2016*2017201820192020202120222023202420252026*

View as table ↓View as chart ↑

Year	Return
2026 (partial year)	−2.01%
2025	+3.78%
2024	+1.26%
2023	+5.56%
2022	−7.35%
2021	+1.02%
2020	+5.12%
2019	+7.06%
2018	+0.93%
2017	+4.72%
2016 (partial year)	−3.83%

MUB Monthly Returns

−4%+6%

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2026	+0.7	+1.3	−2.3	+1.2	+0.3	+0.7	−1.6	−0.2	−3.5	+1.6	—	—
2025	−0.0	+1.3	−1.8	−0.4	−0.6	+0.9	−0.3	+0.8	+2.2	+1.2	+0.2	+0.2
2024	+0.0	−0.2	−0.1	−0.9	−0.3	+1.0	+1.3	+0.2	+1.1	−1.2	+1.7	−1.3
2023	+2.5	−2.3	+2.4	−0.2	−0.6	+0.6	+0.0	−0.8	−2.6	−1.2	+5.7	+2.3
2022	−2.4	−0.5	−2.6	−2.5	+1.5	−1.5	+2.3	−2.4	−2.8	−0.8	+4.8	−0.3
2021	+0.3	−1.6	+0.6	+0.8	+0.3	+0.3	+0.5	−0.2	−0.7	−0.0	+0.7	−0.0
2020	+1.7	+1.0	−3.0	−1.4	+3.8	+0.4	+1.4	−0.6	+0.1	−0.5	+1.6	+0.7
2019	+0.4	+0.5	+1.5	+0.5	+1.4	+0.4	+0.7	+1.5	−0.8	+0.3	+0.1	+0.3
2018	−1.1	−0.6	+0.5	−0.7	+1.3	+0.1	+0.1	+0.2	−0.7	−0.6	+1.1	+1.3
2017	+0.3	+0.5	+0.3	+0.5	+1.5	−0.4	+0.9	+0.8	−0.4	+0.1	−0.5	+1.0

Monthly total returns with dividends reinvested; each cell prints its signed value.

MUB Volatility & Risk

Volatility: 10 yrs · Beta: 3 yrs

Annualized volatility: 4.96%
Beta (3y): 0.90
Best year: +7.06%
Worst year: −7.35%

Volatility is the annualized standard deviation of daily returns. As of October 21, 2026.

Top Holdings

#	Symbol	Name	Weight
1	MCSXX	BlackRock Liquidity MuniCash Instl	2.35%

Analysis

Data-derived

Fund Overview

iShares National Muni Bond ETF (MUB) is an exchange-traded fund in the Muni National Interm category. The fund is issued by iShares. The inception date on file is September 7, 2007. The fund holds $46.62B in total net assets. Annual costs run at an expense ratio of 0.05%. On a $10,000 position that is $5.00 a year.

BlackRock Liquidity MuniCash Instl alone accounts for 2.35% of the portfolio.

Performance Analysis

The most recent close on file for MUB is $102.45, dated October 21, 2026. Over the trailing twelve months the total return is −1.66%. Measured over 10 years, that is +1.66% a year compounded. The fund distributes at a trailing yield of 3.4%.

So far in 2026 the total return is −2.01%. The strongest complete calendar year on file is 2019 at +7.06%; the weakest is 2022 at −7.35%. Of the 9 complete calendar years on file, 8 finished higher.

Price & Risk Profile

Daily returns over the trailing 10 years annualize to a volatility of 4.96%. The reported beta is 0.9. Over the past 52 weeks the price has ranged from $100.07 to $109.00. The latest close sits 2.38% above that 52-week low. The volatility figure is calculated from the stored daily closes, the same series the charts on this page use.

Every figure above is read from this page's own data on each daily rebuild. Informational only, not financial advice. As of October 21, 2026.

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