ETF · holdings as filed 2026-02-28
What's inside MUB?
iShares National Muni Bond ETF
Holdings
6,264
positions in the fund
Expense ratio
0.05%
net, per year
Fund size
$43B
total net assets
Top 15 holdings
1
MCSXXBLCKRCK LIQ FD MUNICSH-INST
0.56%
2
TX UNIHGR 5 08/15/2036TX SYS UNIV BRD OF-B
0.21%
3
CT CTSHGR 07/01/2057CT HLTH & EDUCTNL-C-4
0.20%
4
GA ATLUTL 5 11/01/2040ATLANTA WTR-REF
0.19%
5
TX NWTSCD 5.25 02/15/2055NORTHWEST ISD
0.16%
6
NY NYSTRN 5 03/15/2048NEW YORK ST TWY AUTH
0.16%
7
TX HOUHGR 5 05/15/2034HOUSTON HGR EDU FIN C
0.15%
8
NY NYSHGR 4 02/15/2047NEW YORK ST DORM AUTH
0.14%
9
OH OHSHGR 5 06/01/2035OHIO ST UNIV-A-REF
0.14%
10
CA CAS 5 09/01/2031CALIFORNIA ST-BID -B
0.13%
11
NJ NJS 5 06/01/2028NEW JERSEY ST-A
0.13%
12
WA WAS 4 07/01/2029WASHINGTON ST-R-2022
0.13%
13
PA PASTRN 12/01/2038PA TPK COMM-SECOND
0.12%
14
IL CHITRN 5 12/01/2049CHICAGO TRANSIT AUTH
0.12%
15
NJ NJSEDU 5 03/01/2043NJ EDUCTNL FACS AUTH
0.12%
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Unwrap your portfolio →Data source: official SEC Form N-PORT filings (as of 2026-02-28); 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.