# iShares National Muni Bond ETF (MUB) — Overview

MUB · NYSE · Fund

Canonical page: https://www.lighthorse.io/tickers/mub

## Price

Last close $102.48 on Oct 15, 2026. 52-week range $100.28 – $108.92.

## Fund profile

MUB tracks a market-weighted index of investment-grade debt issued by state and local governments and agencies. Interest is exempt from US income tax and from AMT.

| Metric | Value |
| --- | --- |
| Issuer | BlackRock Fund Advisors |
| Industry | — |
| Inception | Sep 7, 2007 |
| Assets under management | $50.0B |
| Expense ratio | 0.05% |
| Net asset value | $101.42 (as of Oct 14, 2026) |
| Distributions | Monthly |
| Leverage | 1x |

## Frequently Asked Questions

### What is iShares National Muni Bond ETF (MUB)?

MUB tracks a market-weighted index of investment-grade debt issued by state and local governments and agencies. Interest is exempt from US income tax and from AMT.

### What is MUB's expense ratio?

iShares National Muni Bond ETF charges an annual expense ratio of 0.05%. The fund is issued by BlackRock Fund Advisors.

### How large is MUB?

iShares National Muni Bond ETF manages $50.0B in assets and has traded since Sep 7, 2007.

### How do I buy shares of iShares National Muni Bond ETF (MUB)?

MUB trades commission-free with a Light Horse Securities brokerage account — from the mobile app, the web at [Light Horse Dashboard](https://portal.lighthorse.io), the trading API, or an [AI agent connected over MCP](/instructions/ai/claude). The trade panel on this page places the order once you are signed in.

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Quotes and charts are not real-time and must not be relied on for trade decisions or valuation.

This page is for informational purposes only. Nothing on it is a recommendation, solicitation or offer to buy or sell any security, nor investment, legal or tax advice. Light Horse Securities Inc does not verify third-party data and is not responsible for its accuracy, completeness or timeliness.

Data provided by [AInvest](https://www.ainvest.com).