iShares National Muni Bond ETF (MUB)
Bonds · Municipal · data since 2007-09-10 · last close 2026-09-09
iShares National Muni Bond ETF (MUB) monthly returns (%)
| 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 | -1.8 | -0.5 | -1.3 | · | · | · |
| 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 | 0.1 | -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 | -2.5 | -1.3 | 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 | -0.1 | 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 | 1.4 |
| 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 |
| 2016 | 0.8 | 0.0 | 0.4 | 0.7 | 0.3 | 1.6 | -0.0 | 0.1 | -0.6 | -1.0 | -4.1 | 1.7 |
| 2015 | 1.6 | -1.1 | 0.2 | -0.7 | -0.5 | -0.3 | 1.1 | -0.1 | 0.9 | 0.4 | 0.5 | 1.0 |
| 2014 | 2.6 | 1.1 | 0.1 | 1.2 | 1.1 | -0.2 | 0.5 | 1.3 | -0.1 | 0.6 | 0.1 | 0.8 |
| 2013 | 0.8 | 0.5 | -1.3 | 1.8 | -3.0 | -2.7 | -0.8 | -1.7 | 2.8 | 1.2 | -0.5 | -0.4 |
| 2012 | 3.5 | -1.1 | -0.8 | 0.9 | 1.2 | -0.7 | 2.1 | -0.1 | 0.6 | 0.5 | 1.6 | -2.6 |
| 2011 | -0.2 | 2.3 | -1.2 | 2.8 | 2.3 | -0.1 | 0.6 | 3.4 | -0.0 | -0.5 | 0.6 | 2.5 |
| 2010 | 0.4 | 0.8 | -0.1 | 1.1 | 0.8 | -0.3 | 1.4 | 2.2 | -0.0 | -0.8 | -2.8 | -2.5 |
| 2009 | -0.0 | 0.5 | 0.3 | 2.3 | 0.1 | -1.4 | 1.8 | 1.9 | 3.3 | -2.6 | 0.5 | 0.4 |
| 2008 | 0.3 | -4.6 | 3.1 | 1.6 | 0.6 | -1.7 | 0.6 | 1.4 | -3.4 | -1.0 | -0.5 | 5.3 |
| 2007 | · | · | · | · | · | · | · | · | -0.6 | 0.3 | 1.4 | 0.7 |
| Avg | 0.6 | -0.1 | -0.2 | 0.4 | 0.6 | -0.2 | 0.6 | 0.4 | -0.1 | -0.3 | 0.7 | 0.6 |
Values in %. Current and first-listed months are partial (greyed).
returnsview.com
MUB seasonality — average by calendar month
iShares National Muni Bond ETF has monthly history back to 2007. Its strongest month by median is December — positive in 13 of 19 years, median +0.7%, and higher in 6 of the last 9. October is the soft spot, down in 11 of 19 with a median of -0.5%. Across its full record it has closed 61% of months higher, swings ±1.5% in an average month and has fallen 13.7% peak to trough.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg | +0.6% | -0.1% | -0.2% | +0.5% | +0.6% | -0.2% | +0.6% | +0.4% | -0.1% | -0.3% | +0.7% | +0.6% |
| Win rate | 74%/19 | 58%/19 | 53%/19 | 63%/19 | 74%/19 | 47%/19 | 79%/19 | 58%/19 | 37%/19 | 42%/19 | 74%/19 | 68%/19 |
Win rate = share of positive months / sample size.
MUB risk & extremes
MUB drawdown & rolling returns
Percent below the all-time high at each month-end — how far underwater the asset was.
Related stocks
Frequently asked questions
What was iShares National Muni Bond ETF's best month?+
iShares National Muni Bond ETF's strongest completed month on record is November 2023, at +5.71%.
What was iShares National Muni Bond ETF's worst month?+
Its weakest completed month on record is February 2008, at -4.64%.
Is iShares National Muni Bond ETF up this year?+
iShares National Muni Bond ETF is down 1.84% year to date, measured from its last close before 1 January.
What is iShares National Muni Bond ETF's 1-year return?+
+0.56% over the past twelve months, comparing the latest close with the most recent close on or before the same date a year earlier.
What is iShares National Muni Bond ETF's biggest drawdown?+
The deepest peak-to-trough fall on record is 13.7%, measured on month-end closes since 2007.
Which calendar month is historically best for iShares National Muni Bond ETF?+
November has the highest average return across every completed November since 2007. An average is not a forecast.
About iShares National Muni Bond ETF
iShares National Muni Bond ETF is a municipal business worth about $45 billion. Tracked here from its first session onward — every monthly, quarterly and weekly return on record since 2007, with no gaps filled in and nothing smoothed. Since 2007 it has ground out +75% overall — not every story is a rocket.
Did you know?
- Its best month on record was November 2023 at +5.71%; its worst, February 2008 at -4.64%.
- It has closed July in the green 15 out of 19 times — not a promise, just a suspicious habit.
Trivia for entertainment — the numbers come from our price data; the jokes don't.