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MUB

iShares National Muni Bond ETF

Tracks the S&P National AMT-Free Municipal Bond Index, providing exposure to US municipal bonds exempt from federal income tax. Attractive for US taxpayers in high tax brackets. Not tax-advantaged for non-US investors.

TER
0.07%
AUM
$40B
CAGR
3.1%
Volatility
5.3%
Max Drawdown
-11.6%
Data Range
2007-10 → 2026-04

Performance Analysis

Maximum Drawdown History

How far the ETF has fallen from its all-time high at each point. Deeper = more painful.

Current DD-1.1%
Worst DD-11.6%
Worst date2022-10

Rolling Returns

Annualized returns over rolling windows. Shows the range of outcomes depending on when you invested.

Avg return3.0%
Best7.8%
Worst-2.2%
% positive87%
187 periods

Key Facts

ISIN
US4642886158
Issuer
BlackRock
Benchmark
S&P National AMT-Free Municipal Bond Index
Total Expense Ratio (TER)
0.07%
Assets Under Management
$40B approx.
Inception Date
2007-09-07
Domicile
United States
Legal Structure
Open-Ended Fund
Dividend Policy
Distributing (pays dividends)
Replication Method
Physical (Optimized Sampling)
UCITS Status
✗ Not UCITS
Fund Currency
USD
Primary Exchange
NYSE Arca
Number of Holdings
~5,000
Backtest this ETFOfficial Fund Page

Who Is This ETF For?

Portfolio stabilizer and income generator. Reduces overall portfolio volatility when paired with equities.

Key Risks to Consider

Interest rate risk: bond prices fall when rates rise.

Non-UCITS: may have unfavorable tax treatment for non-US investors (US estate tax, withholding tax).

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Data & Methodology

Metadata sourced from official issuer documentation. Price data from Yahoo Finance (monthly adjusted close, includes reinvested dividends and splits). AUM figures are approximate and updated quarterly.

Data source: Yahoo Finance (adjusted close), BlackRock (metadata)Last verified: 2026-04-16