iShares National Muni Bond ETF
$101.73−1.01 (−0.99%)
- Expense ratio
- 0.05%
- Fund size
- $45.7B
- 1Y return
- −0.4%
- Yield · Last 12 months
- 3.33%
- Holdings
- 7119
- Volume · 30D
- 5M sh
- NAV per share
- $102.63
- 52W range
The ETF.net MUB Grade
Score 86 of 100 sits in the A band. Bands: A ≥ 70, B ≥ 55, C ≥ 40, D ≥ 25, F < 25; the scale skips E.
Cost
What you pay to own it — the expense ratio plus trading frictions, ranked within its category.AScore 95Category rankMission
How faithfully it does the job it claims — tracking its mandate or index with minimal slippage.AScore 100Category rankRisk
How violently it can move — volatility, drawdown depth, and downside capture versus its category.BScore 58Category rankTradability
How cheaply and easily you can get in and out — liquidity, spread, and premium/discount stability.AScore 76Category rankHoldings
What it actually owns — the quality, breadth, and concentration of the underlying portfolio.AScore 83Category rankDurability
Whether it will still be here — the fund’s assets, age, flows, and issuer staying power.AScore 93Category rank
Our read on MUB
AMunicipal bonds, indexed and cheap. Since 2007, MUB has packaged investment-grade national munis into tax-exempt monthly income for five basis points a year, and it sits among the deepest pools in the muni-ETF aisle.
The fund seeks to track an index of investment-grade U.S. municipal bonds, providing diversified exposure to the national municipal-bond market and tax-exempt income.
Why people hold it
- 0.05% a year against a muni-ETF median near 0.30%. In a category built on modest, tax-exempt yields, that fee gap is real money left in the fund.
- The benchmark is AMT-free: the ICE AMT-Free US National Municipal Index screens out munis whose interest can be pulled into the alternative minimum tax.ishares.com
- Tracks its index closely, one of the tighter jobs in its peer group, and distributes monthly. A multi-billion-dollar fund that trades actively.
- Broad investment-grade exposure across the national muni market, spread over thousands of issuers rather than one state's budget.ishares.com
Worth knowing
- Two rivals undercut it: VTEB and SCMB both run 0.03%. A two-basis-point gap is small, but it is a gap.
- A bond fund with no maturity date to hold to. Share prices move with interest rates and muni credit conditions, both directions.
- National by design, so no single-state tilt and no in-state tax angle. iShares runs state-specific muni funds such as NYF for that job.
MUB Holdings
- Bonds
- 7,119
- 3%
- BLACKROCK LIQ MUNICASH CL INS MMF
Geography
- United States100.00%
MUB Performance
Shows how $10,000 changes over the selected period, with cash distributions reinvested at the closing price on each ex-dividend date.
MUB$9,964
Returns run to the Sep 22, 2026 close, with cash distributions reinvested. Each period starts on the same date that many months or years earlier. Periods over one year show the average yearly return.
| Period | MUB |
|---|---|
| Year to date | −2.0% |
| 1 month | −2.2% |
| 3 months | −3.5% |
| 1 year | −0.4% |
| 3 years | +2.7% |
| 5 years | +0.1% |
| 10 years | +1.6% |
Calendar-year total return with cash distributions hypothetically reinvested at the ex-dividend date’s closing price. The current year shows year to date.
| Year | Return bar | MUB |
|---|---|---|
| 2026 YTD | −2.0% | |
| 2025 | +3.8% | |
| 2024 | +1.3% | |
| 2023 | +5.6% | |
| 2022 | −7.3% | |
| 2021 | +1.0% | |
| 2020 | +5.1% |
MUB in the news
MUB Dividends
- 3.33%
- $3.42
- $0.29 per share
- Monthly
Distribution history
| Ex-date | Pay date | Amount per share |
|---|---|---|
| Sep 1, 2026 | Sep 4, 2026 | $0.29 |
| Aug 3, 2026 | Aug 6, 2026 | $0.29 |
| Jul 1, 2026 | Jul 7, 2026 | $0.29 |
| Jun 1, 2026 | Jun 4, 2026 | $0.28 |
| May 1, 2026 | May 6, 2026 | $0.29 |
| Apr 1, 2026 | Apr 7, 2026 | $0.28 |
| Mar 2, 2026 | Mar 5, 2026 | $0.29 |
| Feb 2, 2026 | Feb 5, 2026 | $0.28 |
| Dec 19, 2025 | Dec 24, 2025 | $0.29 |
| Dec 1, 2025 | Dec 4, 2025 | $0.29 |
| Nov 3, 2025 | Nov 6, 2025 | $0.28 |
| Oct 1, 2025 | Oct 6, 2025 | $0.29 |
MUB Risk
- 5.2%
How it’s calculated: standard deviation
The sample standard deviation of monthly total returns, multiplied by the square root of 12.
Uses up to 36 complete months, with at least 12 required. Total returns include reinvested distributions.
- −0.28
How it’s calculated: Sharpe ratio
Subtract each month’s Treasury-bill return from the fund’s monthly total return.
Divide the average of those excess returns by their sample standard deviation, then multiply by the square root of 12.
Uses up to 36 complete months, with at least 12 required. Each month uses the Treasury yield quoted at the end of the previous month.
- −11.6%
How it’s calculated: maximum drawdown
The largest percentage decline from an earlier peak, using total returns with reinvested distributions.
Uses up to five years through the last close, with at least 12 months required.
- 0.90
How it’s calculated: beta
The beta figure is supplied by FMP. The comparison index depends on the fund’s broad asset class.
MUB Cost
0.05%
MUB0.05%
- The middle half of Other Municipal Bond funds
- Median 0.30%
2 of the 62 Other Municipal Bond funds charge less.