# MUB (iShares National Muni Bond ETF)

iShares · Bond ETFs · Municipal, national, long · data as of Oct 28, 2026

MUB returned −0.4% over the year to Oct 28, 2026, charges 0.05% a year and holds $54.1bn in net assets on Oct 27, 2026.

Promise check: Delivered. As of Aug 31, 2026, MUB held 99.5% of net assets in municipal bonds. https://etfiq.com/promise-index/bonds/

MUB tracks an index of National Muni Bond and returned −0.4% over the past year.

## Key facts

- MUB, total return, 1 year: −0.4%, as of Oct 28, 2026.
- MUB, expense ratio: 0.05%, as of Jun 18, 2026.
- MUB, holdings: 7873, as of Oct 27, 2026.
- MUB, below its high: −2.7%, as of Oct 28, 2026.
- MUB, 12-month yield, capital gains included, on its starting price: 3.2%, as of Oct 28, 2026.
- MUB, last payment (paid monthly), ex-date Oct 1, 2026: $0.2793, as of Oct 1, 2026.
- MUB, net assets: $54.1bn (the issuer’s own daily fund list, as of Oct 27, 2026).

## MUB over each window to Oct 28, 2026

| Window | Total return |
| --- | --- |
| 1 month | +3.4% |
| 3 months | −1.1% |
| 6 months | −1.5% |
| Year to date | −0.8% |
| 1 year | −0.4% |
| 3 years | +12.5% |
| 5 years | +2.7% |
| 10 years | +19.7% |
| Since launch | +74.3% |
| Since launch, annualised | +2.9% |

## MUB key stats

- 52-week high, daily closes to Oct 28, 2026: $108.92 on Feb 27, 2026 (computed by ETFIQ from Tiingo daily prices)
- 52-week low, daily closes to Oct 28, 2026: $100.28 on Sep 29, 2026 (computed by ETFIQ from Tiingo daily prices)
- Close on Oct 28, 2026, within that range: $103.76, 40% of the way from the low to the high (computed by ETFIQ from Tiingo daily prices)
- Holdings: 7873
- Top ten weight: 1.2%

## MUB trading

- IQ Liquidity Score 93, Trades like a giant, 82nd percentile of 200 bonds ETFs.
- Trades like a giant: trades at a typical spread of 0.01%.
- $1,000: about $0.05, 0.005%, one way.
- $10,000: about $0.50, 0.005%, one way.
- Full cost to own, 1 year at $10,000: 0.21%, against 0.05% for the fee alone.
- Premium to NAV at the Oct 27 close: +0.22%; 95% of days within ±0.31%.
- Limit: midpoint + 1¢ to buy, midpoint − 1¢ to sell. At the Oct 27 close of $103.87, that’s $103.88 to buy and $103.86 to sell.
- The full trading page: https://etfiq.com/funds/mub/trading/

## Every published field

| Field | Value | Source |
| --- | --- | --- |
| What it tracks | ICE AMT-Free US National Municipal Index | ETFIQ |
| Fund type | Bond fund | ETFIQ |
| Category | Bonds · Municipal, national, long | ETFIQ |
| Expense ratio | 0.05% | 485BPOS XBRL, Jun 18, 2026 |
| Price | $103.76 | ETFIQ |
| First traded | Sep 10, 2007 | ETFIQ |
| Net assets | $54.1bn | the issuer’s own daily fund list, as of Oct 27, 2026 |
| Benchmark | Its own holdings, as of Oct 27, 2026; no other fund tracks the ICE AMT-Free US National Municipal Index, the index its prospectus names | ETFIQ, from its filings |
| Below its high | −2.7% | ETFIQ |
| Holdings | 7873 | ETFIQ |
| Top ten weight | 1.2% | ETFIQ |
| Holdings published for | Oct 27, 2026 | the issuer’s daily file |
| Holdings as of the close of | Oct 27, 2026 | the issuer’s daily file |

## Money in and out, to Oct 23, 2026

| Window | Dates | Net flow |
| --- | --- | --- |
| 1 week | Oct 21, 2026 to Oct 23, 2026 | +$1.6bn |
| 1 month | Sep 28, 2026 to Oct 23, 2026 | +$7.2bn |
| 3 months | Jul 28, 2026 to Oct 23, 2026 | +$9.6bn |
| Year to date | Jan 2, 2026 to Oct 23, 2026 | +$13.8bn |
| 1 year | Oct 28, 2025 to Oct 23, 2026 | +$14.8bn |

Computed by ETFIQ from the change in shares outstanding times the previous day’s NAV. Every day and month: <https://etfiq.com/data/flows/funds/mub.json>. Method: https://etfiq.com/methodology/flows

## Questions

### How has MUB performed?

Over the year to Oct 28, 2026, MUB returned −0.4% with distributions reinvested. Over three years the number is +12.5%.

### What does MUB cost?

The prospectus expense ratio is 0.05% a year.

### How far is MUB below its high?

2.7% below its high of Jul 6, 2026, measured on the reinvested series to Oct 28, 2026.


## Cite this page

ETFIQ, MUB, bond fund, data as of Oct 28, 2026. https://etfiq.com/funds/mub
Free to use with attribution for data ETFIQ computes; issuer data stays under its owner's terms. The underlying files are at <https://etfiq.com/data/>.

HTML: https://etfiq.com/funds/mub  ·  JSON: https://etfiq.com/funds/mub.json