ETF · holdings as filed 2026-05-31
What's inside MUB?
iShares National Muni Bond ETF
- Holdings
- 6,654
- positions in the fund
- Top 10
- 3%
- of fund assets
- Expense ratio
- 0.05%
- net, per year
- Fund size
- $45B
- total net assets
Top 20 holdings
| Rank | Logo | Ticker / Name | Weight | |
|---|---|---|---|---|
| 1 | M  | MCSXXBLCKRCK LIQ FD MUNICSH-INST | 1.28% | |
| 2 | T  | TX UNIHGR 5 08.15.2036TX SYS UNIV BRD OF-B | 0.19% | |
| 3 | N  | NY NYSTRN 5 03.15.2048NEW YORK ST TWY AUTH | 0.15% | |
| 4 | T  | TX SANWTR 05.01.2055SAN ANTONIO-D | 0.14% | |
| 5 | N  | NY TRBTRN 01.01.2032TRIBOROUGH BRIDGE-B2 | 0.14% | |
| 6 | N  | NY NYCGEN 11.01.2044NYC TRANS FIN AUTH-C4 | 0.13% | |
| 7 | N  | NY NYSHGR 4 02.15.2047NEW YORK ST DORM AUTH | 0.13% | |
| 8 | O  | OH OHSHGR 5 06.01.2035OHIO ST UNIV-A-REF | 0.13% | |
| 9 | T  | TX HOUHGR 5 05.15.2034HOUSTON HGR EDU FIN C | 0.13% | |
| 10 | T  | TX NWTSCD 5.25 02.15.2055NORTHWEST ISD | 0.13% | |
| 11 | N  | NJ NJS 5 06.01.2028NEW JERSEY ST-A | 0.13% | |
| 12 | C  | CA CAS 5 09.01.2031CALIFORNIA ST-BID -B | 0.12% | |
| 13 | W  | WA WAS 4 07.01.2029WASHINGTON ST-R-2022 | 0.12% | |
| 14 | P  | PA PASTRN 12.01.2038PA TPK COMM-SECOND | 0.12% | |
| 15 | I  | IL CHITRN 5 12.01.2049CHICAGO TRANSIT AUTH | 0.12% | |
| 16 | C  | CA EAWWTR 3.12 09.01.2026E CO AWP JT PWRS-A-1 | 0.11% | |
| 17 | F  | FL ORLUTL 10.01.2033ORLANDO UTILS-VAR-1 | 0.11% | |
| 18 | N  | NY LSLPWR 09.01.2042LONG ISLAND AUTH-A | 0.11% | |
| 19 | N  | NV WASSCD 4 10.01.2047WASHOE CO SD-C-IMPT | 0.11% | |
| 20 | N  | NJ NJSEDU 07.01.2064NJ EDUCTNL FACS-A | 0.11% |
Top holdings — Bonds & Fixed Income
Your 10 largest positions in this sector
1
T
TX UNIHGR 5 08.15.2036TX SYS UNIV BRD OF-B
0.19%2
N
NY NYSTRN 5 03.15.2048NEW YORK ST TWY AUTH
0.15%3
N
NY NYSHGR 4 02.15.2047NEW YORK ST DORM AUTH
0.13%4
O
OH OHSHGR 5 06.01.2035OHIO ST UNIV-A-REF
0.13%5
T
TX HOUHGR 5 05.15.2034HOUSTON HGR EDU FIN C
0.13%6
T
TX NWTSCD 5.25 02.15.2055NORTHWEST ISD
0.13%7
N
NJ NJS 5 06.01.2028NEW JERSEY ST-A
0.13%8
C
CA CAS 5 09.01.2031CALIFORNIA ST-BID -B
0.12%9
W
WA WAS 4 07.01.2029WASHINGTON ST-R-2022
0.12%10
I
IL CHITRN 5 12.01.2049CHICAGO TRANSIT AUTH
0.12%Top holdings — United States
Your 10 largest positions in this country
1
M
MCSXXBLCKRCK LIQ FD MUNICSH-INST
1.28%2
T
TX UNIHGR 5 08.15.2036TX SYS UNIV BRD OF-B
0.19%3
N
NY NYSTRN 5 03.15.2048NEW YORK ST TWY AUTH
0.15%4
T
TX SANWTR 05.01.2055SAN ANTONIO-D
0.14%5
N
NY TRBTRN 01.01.2032TRIBOROUGH BRIDGE-B2
0.14%6
N
NY NYCGEN 11.01.2044NYC TRANS FIN AUTH-C4
0.13%7
N
NY NYSHGR 4 02.15.2047NEW YORK ST DORM AUTH
0.13%8
O
OH OHSHGR 5 06.01.2035OHIO ST UNIV-A-REF
0.13%9
T
TX HOUHGR 5 05.15.2034HOUSTON HGR EDU FIN C
0.13%10
T
TX NWTSCD 5.25 02.15.2055NORTHWEST ISD
0.13%Geography reflects each issuer's registered business address per SEC EDGAR filings where available, falling back to the exchange or listing where no SEC filing exists — not necessarily where a company's stock is primarily listed (e.g. TSMC is classified as Taiwan even though its ADR trades on the NYSE).
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Data source: official SEC Form N-PORT filings (as of 2026-05-31); expense ratio from SEC prospectus (risk/return) filings. Fund holdings are disclosed quarterly and may reflect a 60-day reporting delay.
Informational and educational only — not investment advice.
Informational and educational only — not investment advice.