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iShares National AMT-Free Muni Bond ETF (MUB)
Performance
Risk-Adjusted Performance
Dividends
Drawdowns
Volatility

ETF Info

ISIN

US4642884146

CUSIP

464288414

Issuer

iShares

Inception Date

Sep 7, 2007

Region

North America (U.S.)

Leveraged

1x

Index Tracked

S&P National AMT-Free Municipal Bond Index

Asset Class

Bond

Expense Ratio

MUB has an expense ratio of 0.07%, which is considered low.


Share Price Chart


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Compare to other instruments

Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.


Performance

Performance Chart


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S&P 500

Returns By Period

iShares National AMT-Free Muni Bond ETF (MUB) returned -1.65% year-to-date (YTD) and 0.65% over the past 12 months. Over the past 10 years, MUB returned 1.95% annually, underperforming the S&P 500 benchmark at 10.64%.


MUB

YTD

-1.65%

1M

0.83%

6M

-2.06%

1Y

0.65%

3Y*

2.06%

5Y*

0.41%

10Y*

1.95%

^GSPC (Benchmark)

YTD

-0.67%

1M

10.48%

6M

-1.79%

1Y

10.08%

3Y*

13.71%

5Y*

14.60%

10Y*

10.64%

*Annualized

Monthly Returns

The table below presents the monthly returns of MUB, with color gradation from worst to best to easily spot seasonal factors. Returns are adjusted for dividends.


JanFebMarAprMayJunJulAugSepOctNovDecTotal
2025-0.01%1.33%-1.82%-0.41%-0.71%-1.65%
20240.05%-0.21%-0.09%-0.94%-0.31%1.03%1.31%0.24%1.14%-1.22%1.67%-1.34%1.26%
20232.46%-2.27%2.41%-0.21%-0.64%0.56%0.03%-0.78%-2.55%-1.25%5.71%2.26%5.56%
2022-2.41%-0.53%-2.58%-2.52%1.46%-1.46%2.26%-2.44%-2.81%-0.85%4.84%-0.26%-7.35%
20210.34%-1.56%0.57%0.76%0.34%0.35%0.46%-0.20%-0.71%-0.05%0.73%-0.01%1.02%
20201.66%0.97%-2.98%-1.38%3.77%0.36%1.45%-0.59%0.12%-0.52%1.62%0.68%5.12%
20190.38%0.54%1.49%0.53%1.41%0.41%0.73%1.53%-0.76%0.30%0.06%0.26%7.06%
2018-1.15%-0.60%0.49%-0.69%1.25%0.14%0.15%0.16%-0.68%-0.56%1.11%1.35%0.93%
20170.26%0.52%0.33%0.54%1.53%-0.42%0.88%0.80%-0.43%0.09%-0.47%1.01%4.72%
20160.77%0.02%0.44%0.67%0.28%1.61%-0.05%0.13%-0.56%-0.96%-4.10%1.72%-0.17%
20151.60%-1.12%0.22%-0.71%-0.49%-0.34%1.12%-0.11%0.86%0.36%0.50%1.02%2.91%
20142.56%1.05%0.09%1.24%1.12%-0.16%0.45%1.26%-0.08%0.55%0.12%0.81%9.35%

Risk-Adjusted Performance

Risk-Adjusted Performance Rank

The current rank of MUB is 22, meaning it’s performing worse than 78% of other ETFs on our website when it comes to balancing risk and reward. Below is a breakdown of how it compares using common performance measures.


The Risk-Adjusted Performance Rank of MUB is 2222
Overall Rank
The Sharpe Ratio Rank of MUB is 2525
Sharpe Ratio Rank
The Sortino Ratio Rank of MUB is 1818
Sortino Ratio Rank
The Omega Ratio Rank of MUB is 1919
Omega Ratio Rank
The Calmar Ratio Rank of MUB is 2424
Calmar Ratio Rank
The Martin Ratio Rank of MUB is 2323
Martin Ratio Rank
The risk-adjusted ranks indicate the investment's position relative to the market. A rank closer to 100 signifies top-performing investments, while a rank closer to 0 might suggest underperformance, based on the selected ratio. The values are calculated based on the past 12 months of returns.

Risk-Adjusted Performance Indicators

The charts below present risk-adjusted performance metrics for iShares National AMT-Free Muni Bond ETF (MUB) and compare them to a chosen benchmark (^GSPC). These indicators evaluate an investment's returns against its associated risks.


The Sharpe ratio helps investors understand how much return they're getting for the level of risk taken. A higher Sharpe ratio indicates better risk-adjusted performance, meaning more reward for each unit of risk.

iShares National AMT-Free Muni Bond ETF Sharpe ratios as of May 23, 2025 (values are recalculated daily):

  • 1-Year: 0.14
  • 5-Year: 0.10
  • 10-Year: 0.40
  • All Time: 0.54

These values reflect how efficiently the investment has delivered returns relative to its volatility over different time periods. All figures are annualized and based on daily total returns (including price changes and dividends).

The chart below shows the rolling Sharpe ratio of iShares National AMT-Free Muni Bond ETF compared to the selected benchmark. This view highlights how the investment's risk-adjusted performance has changed over time. For deeper analysis or to customize the calculation, use the Sharpe ratio tool.


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Dividends

Dividend History

iShares National AMT-Free Muni Bond ETF provided a 3.16% dividend yield over the last twelve months, with an annual payout of $3.27 per share. The fund has been increasing its distributions for 3 consecutive years.


1.80%2.00%2.20%2.40%2.60%2.80%3.00%$0.00$0.50$1.00$1.50$2.00$2.50$3.00$3.5020142015201620172018201920202021202220232024
Dividends
Dividend Yield
PeriodTTM20242023202220212020201920182017201620152014
Dividend$3.27$3.21$2.87$2.23$2.10$2.47$2.76$2.68$2.50$2.39$2.77$3.01

Dividend yield

3.16%3.01%2.65%2.11%1.81%2.11%2.42%2.46%2.26%2.21%2.51%2.73%

Monthly Dividends

The table displays the monthly dividend distributions for iShares National AMT-Free Muni Bond ETF. The dividends shown in the table have been adjusted to account for any splits that may have occurred.


JanFebMarAprMayJunJulAugSepOctNovDecTotal
2025$0.00$0.27$0.28$0.28$0.28$1.11
2024$0.00$0.26$0.27$0.26$0.26$0.28$0.26$0.26$0.27$0.28$0.27$0.54$3.21
2023$0.00$0.22$0.24$0.23$0.23$0.23$0.24$0.24$0.23$0.24$0.25$0.51$2.87
2022$0.00$0.16$0.17$0.17$0.17$0.16$0.19$0.19$0.20$0.20$0.20$0.42$2.23
2021$0.00$0.18$0.20$0.18$0.18$0.18$0.18$0.17$0.17$0.17$0.16$0.33$2.10
2020$0.00$0.22$0.23$0.23$0.22$0.21$0.21$0.19$0.19$0.21$0.20$0.38$2.47
2019$0.00$0.23$0.25$0.23$0.23$0.24$0.23$0.23$0.22$0.23$0.22$0.44$2.76
2018$0.00$0.20$0.21$0.21$0.21$0.22$0.23$0.23$0.23$0.24$0.25$0.45$2.68
2017$0.00$0.21$0.22$0.21$0.21$0.21$0.21$0.21$0.20$0.21$0.20$0.41$2.50
2016$0.00$0.22$0.20$0.18$0.20$0.21$0.21$0.20$0.21$0.20$0.20$0.35$2.39
2015$0.00$0.24$0.24$0.24$0.24$0.23$0.23$0.23$0.23$0.23$0.22$0.44$2.77
2014$0.27$0.27$0.26$0.26$0.25$0.25$0.25$0.25$0.25$0.24$0.46$3.01

Drawdowns

Drawdowns Chart

The Drawdowns chart displays portfolio losses from any high point along the way. Drawdowns are calculated considering price movements and all distributions paid, if any.


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Worst Drawdowns

The table below displays the maximum drawdowns of the iShares National AMT-Free Muni Bond ETF. A maximum drawdown is a measure of risk, indicating the largest reduction in portfolio value due to a series of losing trades.

The maximum drawdown for the iShares National AMT-Free Muni Bond ETF was 13.68%, occurring on Mar 19, 2020. Recovery took 92 trading sessions.

The current iShares National AMT-Free Muni Bond ETF drawdown is 3.22%.


Depth

Start

To Bottom

Bottom

To Recover

End

Total

-13.68%Mar 10, 20208Mar 19, 202092Jul 30, 2020100
-12.33%Sep 10, 200826Oct 15, 200858Jan 8, 200984
-11.89%Jul 20, 2021325Oct 31, 2022526Dec 4, 2024851
-9.74%Dec 3, 2012140Jun 24, 2013270Jul 21, 2014410
-8.86%Aug 26, 201099Jan 14, 2011123Jul 13, 2011222

Volatility

Volatility Chart

The chart below shows the rolling one-month volatility.


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