iShares National Muni Bond ETF (MUB) is an ETF managed by BlackRock / iShares. Its largest position is BLACKROCK LIQUIDITY FUNDS MUNICASH (MCSXX), representing 0.56% of fund assets.
iShares National Muni Bond ETF Portfolio Holdings
Source: SEC Form N-PORT institutional portfolio disclosures
- Ticker:
- MUB
- Type:
- ETF
- Manager:
- BlackRock / iShares
- Total Assets:
- —
- Report Date:
- Feb 28, 2026
- Filing Date:
- Apr 22, 2026
| Holding | Weight | Market Value | Shares |
|---|---|---|---|
|
-
BLACKROCK LIQUIDITY FUNDS MUNICASH
|
0.56% | $242,983,297.79 | 242,959,002 |
|
-
CONNECTICUT STATE HEALTH & EDUCATIONAL FACILITIES AUTHORITY
|
0.20% | $85,000,000.00 | 85,000,000 |
|
-
PENNSYLVANIA TURNPIKE COMMISSION
|
0.12% | $52,715,000.00 | 52,715,000 |
|
-
OHIO WATER DEVELOPMENT AUTHORITY WATER POLLUTION CONTROL LOAN FUND
|
0.09% | $40,090,000.00 | 40,090,000 |
|
-
PENNSYLVANIA TURNPIKE COMMISSION
|
0.09% | $39,250,000.00 | 39,250,000 |
|
-
NEW YORK CITY MUNICIPAL WATER FINANCE AUTHORITY
|
0.08% | $34,110,000.00 | 34,110,000 |
|
-
COUNTY OF KING
|
0.07% | $32,300,000.00 | 32,300,000 |
|
-
CITY OF SEATTLE
|
0.07% | $31,100,000.00 | 31,100,000 |
|
-
UNIVERSITY OF CALIFORNIA
|
0.07% | $30,000,000.00 | 30,000,000 |
|
-
NEW YORK CITY TRANSITIONAL FINANCE AUTHORITY FUTURE TAX SECURED REVENUE
|
0.07% | $30,000,000.00 | 30,000,000 |
|
-
CITY OF HOUSTON TX COMBINED UTILITY SYSTEM REVENUE
|
0.07% | $29,200,000.00 | 29,200,000 |
|
-
LONG ISLAND POWER AUTHORITY
|
0.06% | $26,825,000.00 | 26,825,000 |
|
-
CITY OF NEW YORK
|
0.06% | $26,160,000.00 | 26,160,000 |
|
-
CITY OF NEW YORK
|
0.06% | $25,000,000.00 | 25,000,000 |
|
-
CONNECTICUT STATE HEALTH & EDUCATIONAL FACILITIES AUTHORITY
|
0.06% | $25,000,000.00 | 25,000,000 |
|
-
SAN ANTONIO WATER SYSTEM
|
0.05% | $23,650,000.00 | 23,650,000 |
|
-
PORT OF TACOMA WA
|
0.05% | $22,990,000.00 | 22,990,000 |
|
-
SOUTH CAROLINA PUBLIC SERVICE AUTHORITY
|
0.05% | $22,850,000.00 | 22,850,000 |
|
-
TRIBOROUGH BRIDGE & TUNNEL AUTHORITY
|
0.05% | $20,000,000.00 | 20,000,000 |
|
-
LONG ISLAND POWER AUTHORITY
|
0.05% | $19,500,000.00 | 19,500,000 |
|
-
NEW YORK CITY MUNICIPAL WATER FINANCE AUTHORITY
|
0.04% | $19,370,000.00 | 19,370,000 |
|
-
DISTRICT OF COLUMBIA WATER & SEWER AUTHORITY
|
0.04% | $19,095,000.00 | 19,095,000 |
|
-
ARIZONA BOARD OF REGENTS
|
0.04% | $18,345,000.00 | 18,345,000 |
|
-
OHIO STATE UNIVERSITY (THE)
|
0.04% | $17,600,000.00 | 17,600,000 |
|
-
DISTRICT OF COLUMBIA WATER & SEWER AUTHORITY
|
0.03% | $15,000,000.00 | 15,000,000 |
|
-
SOUTHERN CALIFORNIA PUBLIC POWER AUTHORITY
|
0.03% | $15,000,000.00 | 15,000,000 |
|
-
MASSACHUSETTS DEVELOPMENT FINANCE AGENCY
|
0.03% | $14,445,000.00 | 14,445,000 |
|
-
DISTRICT OF COLUMBIA WATER & SEWER AUTHORITY
|
0.03% | $14,250,000.00 | 14,250,000 |
|
-
JEA WATER & SEWER SYSTEM
|
0.03% | $13,940,000.00 | 13,940,000 |
|
-
WASHINGTON SUBURBAN SANITARY COMMISSION
|
0.03% | $13,465,000.00 | 13,465,000 |
|
-
PENNSYLVANIA TURNPIKE COMMISSION
|
0.03% | $12,200,000.00 | 12,200,000 |
|
-
WASHINGTON SUBURBAN SANITARY COMMISSION
|
0.03% | $10,900,000.00 | 10,900,000 |
|
-
EMPIRE STATE DEVELOPMENT CORP.
|
0.02% | $7,775,000.00 | 7,775,000 |
|
-
CITY OF COLORADO SPRINGS UTILITIES SYSTEM
|
0.01% | $5,840,000.00 | 5,840,000 |
|
-
CITY OF NEW YORK NY
|
0.01% | $5,300,000.00 | 5,300,000 |
|
-
BATTERY PARK CITY AUTHORITY
|
0.01% | $4,530,000.00 | 4,530,000 |
|
-
TRIBOROUGH BRIDGE & TUNNEL AUTHORITY
|
0.00% | $1,375,000.00 | 1,375,000 |
|
-
PENNSYLVANIA TURNPIKE COMMISSION
|
0.00% | $600,000.00 | 600,000 |
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