---
ticker: "MUB"
name: "iShares National Muni Bond ETF"
url: "https://etf.net/etf/MUB"
grade: "A"
score: 87
graded_at: "2026-10-12"
category: "Other Municipal Bond"
category_rank: "2 of 63"
methodology: "https://etf.net/methodology"
---

# MUB: iShares National Muni Bond ETF

Grade **A**, Score 87 of 100. Rank 2 of 63 in Other Municipal Bond.

Graded Oct 12, 2026.

## Grade pillars

| Pillar | Score | Category rank |
| --- | --- | --- |
| Cost | 95 | 3 of 63 |
| Mission | 100 | 1 of 59 |
| Risk | 63 | 8 of 63 |
| Tradability | 74 | 9 of 63 |
| Holdings | 83 | 10 of 63 |
| Durability | 93 | 2 of 63 |

## Top holdings

The fund holds 7473 positions. These are the largest 30, by weight.

| # | Ticker | Name | Weight |
| --- | --- | --- | --- |
| 1 | — | BlackRock Liq Municash Class Ins Mmf | 3.03% |
| 2 | — | University Tex Univ Revs 5.00% 08/15/2036 | 0.16% |
| 3 | — | San Antonio Tex Wtr Rev 05/01/2055 | 0.14% |
| 4 | — | Northwest Tex Indpt Sch Dist 5.25% 02/15/2055 | 0.14% |
| 5 | — | New York St Twy Auth St Pers I 5.00% 03/15/2048 | 0.13% |
| 6 | — | Oklahoma Transn Auth Ok F/K/A 5.50% 01/01/2053 | 0.13% |
| 7 | — | Triborough Brdg & Tunl Auth Ny 01/01/2035 | 0.13% |
| 8 | — | New Jersey St 5.00% 06/01/2028 | 0.11% |
| 9 | — | Houston Tex Higher Ed Fin Corp 5.00% 05/15/2034 | 0.11% |
| 10 | — | Ohio St Univ Gen Rcpts 5.00% 06/01/2035 | 0.11% |
| 11 | — | Washington St 4.00% 07/01/2029 | 0.11% |
| 12 | — | California St 5.00% 09/01/2031 | 0.11% |
| 13 | — | New York St Dorm Auth St Pers 4.00% 02/15/2047 | 0.11% |
| 14 | — | Triborough Brdg & Tunl Auth N 01/01/2032 | 0.11% |
| 15 | — | New York City Transitional Fin Aut 5.25% 11/01/2054 | 0.10% |
| 16 | — | Illinois St 5.00% 11/01/2027 | 0.10% |
| 17 | — | King Cnty Wash Swr Rev 01/01/2042 | 0.10% |
| 18 | — | Houston Tex Util Sys Rev 05/15/2034 | 0.10% |
| 19 | — | Seattle Wash Mun Lt & Pwr Rev 11/01/2046 | 0.10% |
| 20 | — | Triborough Brdg & Tunl Auth N 5.00% 05/15/2051 | 0.10% |
| 21 | — | New Jersey St Edl Facs Auth Re 5.00% 07/01/2031 | 0.10% |
| 22 | — | Chicago Ill Tran Auth Sales Ta 5.00% 12/01/2049 | 0.10% |
| 23 | — | California Edl Facs Auth Rev 5.00% 10/01/2055 | 0.09% |
| 24 | — | Massachusetts St 5.00% 05/01/2054 | 0.09% |
| 25 | — | California St 5.00% 10/01/2036 | 0.09% |
| 26 | — | District Columbia Univ Rev 5.00% 04/03/2035 | 0.09% |
| 27 | — | Los Angeles Calif Dept Arpts R 5.25% 05/15/2051 | 0.09% |
| 28 | — | New York N Y City Mun Wtr Fin 5.25% 06/15/2047 | 0.09% |
| 29 | — | Houston Tex Util Sys Rev 05/15/2034 | 0.09% |
| 30 | — | Alabama Toll Rd Brdg & Tunl Au 5.00% 01/01/2066 | 0.09% |

Source: etf.net, https://etf.net/etf/MUB. Please cite the page URL.