iShares Long-Term National Muni Bond ETF

iShares Long-Term National Muni Bond ETF

About

iShares Long-Term National Muni Bond ETF (US46438G4486) is a US-listed bond ETF tracking the ICE Long AMT-Free US National Municipal Index. With a expense ratio of 0.09%, it ranks among the lowest-cost options in its category, paying distributions. The fund holds 759 positions with 1.7B in assets.

Score Breakdown

Scores are scaled 1–10 on a logarithmic curve relative to all ETFs in the database. Last updated: Jun 22, 2026
Component Score Details
Cost (30%) 9.0 Tracking Difference: 9.2 · TD Consistency: — · Expense Ratio: 8.5
Liquidity (25%) 8.6 Assets Under Management

Data sources: provider factsheets, exchange data, and NAV history. Information for educational purposes only — not investment advice.

Ticker LMUB
ISIN
Fund Size $1.7B
Issuer iShares
Distribution Pays Distributions
Replication Physical
Inception Mar 2025
Base Currency USD
Index ICE Long AMT-Free US National Municipal Index
Asset Class Bonds

Costs

9.0
This fund has low total costs, with competitive tracking and expense ratios.

Cost Metrics Explained

What expense ratio, tracking difference, and TD consistency measure

Expense ratio (Total Expense Ratio) is the annual fee the fund charges, deducted from assets. It’s the headline cost, but not the full picture.

Tracking Difference measures how much the fund actually lags (or leads) its benchmark index per year. This is the single best measure of true cost — it captures the expense ratio plus all other drags like sampling error and tax withholding. A lower (or negative) value is better.

TD Consistency measures how stable the tracking difference is from year to year. A low value means predictable, reliable costs; a high value means costs can vary significantly.
Expense Ratio0.00%
 
Metric Value
Expense Ratio 0.09%

Cumulative Returns

Performance across different time periods.
Year to Date+0.00%
1 Year+0.00%
Inception+0.00%
 
Period Cumulative Return
1 Month —
3 Months —
6 Months —
1 Year +8.52%
3 Years —
5 Years —
10 Years —
YTD +1.93%
Since Inception +4.81%

Holdings

This fund invests into 759 individual investments.
#1
BLACKROCK LIQ MUNICASH CL INS MMF
4.25%
#2
MASSACHUSETTS ST
0.84%
#3
WASHINGTON ST
0.69%
#4
ILLINOIS ST
0.65%
#5
ILLINOIS ST
0.63%
#6
OKLAHOMA CAP IMP AUTH ST HWY C
0.63%
#7
PENNSYLVANIA ST TURNPIKE COMMISSIO
0.62%
#8
TEXAS ST
0.62%
#9
NEW YORK N Y CITY TRANSITIONAL
0.62%
#10
PENNSYLVANIA ST
0.60%
View all holdings (50)
# Holding Ticker Weight
1 BLACKROCK LIQ MUNICASH CL INS MMF — 425.28%
2 MASSACHUSETTS ST — 84.18%
3 WASHINGTON ST — 68.87%
4 ILLINOIS ST — 64.86%
5 ILLINOIS ST — 63.35%
6 OKLAHOMA CAP IMP AUTH ST HWY C — 62.85%
7 PENNSYLVANIA ST TURNPIKE COMMISSIO — 62.39%
8 TEXAS ST — 62.06%
9 NEW YORK N Y CITY TRANSITIONAL — 61.87%
10 PENNSYLVANIA ST — 60.47%
11 NEW JERSEY ST — 59.60%
12 CLARK CNTY NEV SCH DIST — 59.16%
13 ILLINOIS ST — 57.59%
14 UNIVERSITY TEX PERM UNIV FD — 54.88%
15 NEW YORK ST URBAN DEV CORP ST — 52.06%
16 ARAPAHOE CNTY COLO SCH DIST NO 5 C — 51.33%
17 NEW YORK ST DORM AUTH SALES TA — 49.21%
18 SEATTLE WASH MUN LT & PWR REV — 49.18%
19 METROPOLITAN ST LOUIS MO SWR D — 49.13%
20 MULTNOMAH CNTY ORE SCH DIST NO — 49.06%
21 SALT RIV PROJ AGRIC IMPT & PWR — 48.62%
22 MULTNOMAH CNTY ORE SCH DIST NO — 48.55%
23 NEW YORK ST DORM AUTH ST PERSONAL — 48.39%
24 KING CNTY WASH SWR REV — 48.28%
25 METROPOLITAN NASHVILLE ARPT AU — 48.16%
26 OHIO (STATE OF) — 48.11%
27 TRIBOROUGH BRDG & TUNL AUTH N — 47.75%
28 NEW YORK N Y — 47.34%
29 TEXAS CITY TEX INDPT SCH DIST — 47.25%
30 METROPOLITAN UTILS DIST OMAHA — 46.42%
31 NEW YORK ST TWY AUTH ST PERS I — 44.34%
32 LOS ANGELES CALIF DEPARTMENT OF WA — 44.24%
33 WASHINGTON D C MET AREA TRAN A — 42.30%
34 SAN ANTONIO TEX ELEC & GAS REV — 41.40%
35 HURST EULESS BEDFORD TEX INDPT — 41.31%
36 WASHOE CNTY NEV SCH DIST — 41.31%
37 SOUTH DAKOTA CONSERVANCY DIST — 40.22%
38 NEW JERSEY ST TRANSN TR FD AUT — 39.85%
39 COLORADO SPRINGS COLO UTILS RE — 39.46%
40 MICHIGAN ST TRUNK LINE — 39.19%
41 FONTANA CALIF PUB FACS FING AU — 39.05%
42 CHARLOTTE N C ARPT REV — 38.94%
43 NEW YORK N Y CITY MUN WTR FIN — 38.94%
44 NEW YORK N Y CITY TRANSITIONAL — 38.18%
45 CLARK CNTY NEV SCH DIST — 38.16%
46 LOS ANGELES CALIF UNI SCH DIST — 38.03%
47 NEW JERSEY ST TRANSN TR FD AUT — 37.58%
48 ARIZONA ST TRANSN BRD HWY REV — 37.18%
49 LOS ANGELES CALIF DEPT WTR & P — 36.61%
50 CORPUS CHRISTI TEX UTIL SYS RE — 36.59%

Sectors

Allocation by industry sector.
 
Sector Weight
Unknown 10000.00%

Regions

Geographic allocation by country of risk.
 
Country Weight
UNKNOWN 10000.00%
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