ETF model portfolios designed for real investor needs. Discover →
iShares National Muni Bond ETF
MUB performance and flow charts
Performance
Flows
Historic performance and flows
Data as of September 10, 2026| 1M | 3M | YTD | 1Y | 3Y | 5Y | |
|---|---|---|---|---|---|---|
| Perf. | -2.62% | -3.00% | -1.70% | +0.26% | +4.17% | -2.33% |
| Flows | -$50M | +$1.02B | +$4.66B | +$6.27B | +$12.31B | +$24.57B |
Characteristics
The iShares National Muni Bond ETF is built to track the ICE AMT-Free US National Municipal Index - USD. This ETF provides physical exposure - by owning its shares you earn the return of the securities composing the index (as the ETF holds them directly). This share class generates a stream of income by distributing dividends.
| Management strategy | Passive |
| Strategy | Long Only |
| Provider | iShares |
| N° of holdings | 6762 |
| Replication method | Direct (Physical) |
| Asset class | Fixed Income |
| Dividend policy | Distributing |
Trailing 12m distribution yield | Join for free |
| Inception date | September 7, 2007 |
| ESG | No |
More data and info about MUB on Trackinsight
Exposure
Data as of July 31, 2026Diversification
Total weight of top 15 holdings out of 6,762
Top 15 Holdings
Sectors
Countries
Maturity
Credit rating
Latest news about MUB
Similar ETFs
Trading data
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | |
|---|---|---|---|---|
| Volatility | +3.05% | +2.46% | +3.58% | +3.45% |
Max drawdown | -3.66% | -3.66% | -5.81% | -11.55% |
Max drawdown duration | 66d | 66d | 349d | 1488d |
Time to recover | N/A | N/A | 160d | 1194d |
Replication quality
Data as of September 11, 2026Create an account to view replication metrics
1 year cumulative return difference | |
|---|---|
| Best | Join for free |
| Worst | Join for free |
| daily return difference | |
|---|---|
| Average | Join for free |
| Worst | Join for free |
What type of ETF is MUB?
MUB is a Passive ETF that provides exposure to Fixed Income assets. It is managed by iShares.
What index does MUB track?
MUB tracks the ICE AMT-Free US National Municipal Index - USD, aiming to replicate its performance through full replication.
What does MUB invest in?
This ETF provides exposure to US Investment Grade Municipal Bonds. It is part of the segment: Municipal Bonds.
What is the expense ratio of MUB?
The total expense ratio (TER) of MUB is 0.05%, representing the annual fee charged by the fund manager.
When was MUB launched?
MUB was launched on September 7, 2007, marking its entry into the ETF market.
Who is the issuer of MUB?
MUB is issued by iShares.
What is the AUM of MUB?
As of September 10, 2026, MUB manages $44.44 B, reflecting the total assets held in the fund.
How has MUB performed recently?
As of September 10, 2026, MUB delivered a return of -2.62% over the past month (1M performance), -3% over the past three months (3M), and -1.7% year-to-date (YTD).
What are the recent fund flows for MUB?
As of September 10, 2026, MUB has seen net flows of -$50M in the past month (1M flow) and +$4.66B year-to-date (YTD).
Does MUB pay dividends?
As of September 10, 2026, MUB has a trailing 12-month distribution yield of 3.33%.
How many holdings are in MUB
As of July 31, 2026, MUB holds 6762 securities in its portfolio. This level of diversification can influence the fund’s risk profile and exposure to individual assets.
How diversified is MUB?
As of July 31, 2026, MUB holds 6762 securities, with 2.21% of its assets concentrated in its top 15 holdings.
What are the top holdings of MUB?
As of July 31, 2026, MUB holds a portfolio of 6762 underlyings, with its largest positions including BlackRock Liquidity MuniCash, University of Texas, 5% 15aug2036, USD (2025B) and US650028ZA41. These top holdings play a significant role in shaping the fund’s performance and exposure.
What countries or regions does MUB invest in?
As of July 31, 2026, MUB has its largest geographic exposures in USA.
What sectors or themes does MUB focus on?
As of July 31, 2026, MUB is primarily exposed to Municipal.
Advantages of ETFs over Mutual Funds1/6
Lower Costs
In this guide, we'll explore the advantages of ETFs over mutual funds, giving you valuable insights into why ETFs have gained significant popularity among investors like yourself.
Leveraged ETFs: Unlocking the Potential for Amplified Returns1/6
Understanding Leveraged ETFs
Explore leveraged ETFs: potential for amplified returns & risks. 5 ETFs to consider across equities, commodities & fixed income.
What is a Leveraged ETF?1/6
Introducing Leveraged and Inverse ETFs
In this guide, we'll dive into the world of leveraged ETFs, exploring their definition, mechanics, potential risks, and rewards.
Recent educational content
ETF Trends
ETF Industry KPIs September 8, 2026
This week’s KPI data overview highlights key metrics and trends shaping the ETF landscape.
ETF Trends
ETF Industry KPIs August 31, 2026
This week’s KPI data overview highlights key metrics and trends shaping the ETF landscape.
ETF Trends
ETF Industry KPIs August 24, 2026
This week’s KPI data overview highlights key metrics and trends shaping the ETF landscape.
What’sTheFund
What's the Fund | Ocean Park Diversified Income ETF (DUKZ)
James St Aubin, Chief Investment Officer at Ocean Park Asset Management, discuss the DUKZ ETF, exposing investors to the whole spectrum of asset classes in the fixed income markets, through their rules-based process.
Browse all educational columns
Build and Analyze Your ETF Portfolio Like a Pro
Create your own ETF portfolio in minutes and instantly see allocations, exposures, performance, and risk. Visualize diversification across asset classes, regions, and sectors. Stress-test ideas, compare benchmarks, and refine your strategy with professional-grade analytics.
