iShares® iBonds® Dec 2031 Term Muni Bond ETF

iShares® iBonds® Dec 2031 Term Muni Bond ETF

About

iShares® iBonds® Dec 2031 Term Muni Bond ETF (US46438G3561) is a US-listed bond ETF tracking the S&P AMT-Free Municipal Series Callable-Adjusted 2031 Index. With a expense ratio of 0.18%, it is competitively priced, paying distributions. The fund holds 1,041 positions with 100M 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%) 8.5 Tracking Difference: 9.7 · TD Consistency: — · Expense Ratio: 5.8
Liquidity (25%) 5.7 Assets Under Management

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

Ticker IBMT
ISIN
Fund Size $100.4M
Issuer iShares
Distribution Pays Distributions
Replication Physical
Inception Mar 2025
Base Currency USD
Index S&P AMT-Free Municipal Series Callable-Adjusted 2031 Index
Asset Class Bonds

Costs

8.5
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 0.18%

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 +4.94%
3 Years —
5 Years —
10 Years —
YTD +0.13%
Since Inception +4.69%

Holdings

This fund invests into 1,041 individual investments.
#1
NEW JERSEY ST
0.83%
#2
LOS ANGELES CALIF UNI SCH DIST
0.60%
#3
MONTGOMERY CNTY MD
0.54%
#4
UNIVERSITY CALIF REVS
0.53%
#5
NORTH TEX TWY AUTH REV
0.53%
#6
METROPOLITAN NASHVILLE ARPT AU
0.52%
#7
CALIFORNIA ST PUB WKS BRD LEAS
0.49%
#8
NEW YORK N Y
0.44%
#9
NEW YORK ST DORM AUTH REVS NON
0.43%
#10
CALIFORNIA ST
0.42%
View all holdings (50)
# Holding Ticker Weight
1 NEW JERSEY ST — 82.80%
2 LOS ANGELES CALIF UNI SCH DIST — 60.04%
3 MONTGOMERY CNTY MD — 54.06%
4 UNIVERSITY CALIF REVS — 52.91%
5 NORTH TEX TWY AUTH REV — 52.82%
6 METROPOLITAN NASHVILLE ARPT AU — 51.88%
7 CALIFORNIA ST PUB WKS BRD LEAS — 49.11%
8 NEW YORK N Y — 44.37%
9 NEW YORK ST DORM AUTH REVS NON — 42.88%
10 CALIFORNIA ST — 42.29%
11 CHICAGO ILL WTR REV — 39.89%
12 NEW YORK ST DORM AUTH ST PERS — 39.29%
13 LONG IS PWR AUTH N Y ELEC SYS — 38.76%
14 HONOLULU HAWAII CITY & CNTY — 38.27%
15 MINNESOTA ST — 38.06%
16 NEW YORK CITY OF — 37.97%
17 NEW YORK N Y CITY TRANSITIONAL — 37.87%
18 SALT LAKE CITY UTAH PUB UTILS — 36.41%
19 CHICAGO ILL MET WTR RECLAMATIO — 36.10%
20 MIAMI UNIV OHIO GEN RCPTS — 35.37%
21 YOSEMITE CALIF CMNTY COLLEGE DIST — 34.44%
22 LOWER COLO RIV AUTH TEX TRANSM — 33.08%
23 IDAHO HSG & FIN ASSN — 32.66%
24 DISTRICT COLUMBIA — 31.29%
25 PENNSYLVANIA ST — 31.14%
26 BLACKROCK LIQ MUNICASH CL INS MMF — 31.02%
27 CALIFORNIA ST — 30.84%
28 LOWER COLO RIV AUTH TEX TRANSM — 30.61%
29 INDIANAPOLIS IND LOC PUB IMPT — 30.53%
30 ILLINOIS ST — 30.33%
31 MILWAUKEE WIS — 29.74%
32 UNIVERSITY UTAH UNIV REVS — 29.20%
33 OHIO ST TPK COMMN TPK REV — 28.99%
34 CALIFORNIA ST — 28.42%
35 VIRGINIA COLLEGE BLDG AUTH VA — 28.32%
36 NEW JERSEY ECONOMIC DEV AUTH R — 28.26%
37 LOUISIANA ST — 27.73%
38 MOBILE ALA — 27.37%
39 SAN DIEGO CALIF UNI SCH DIST — 27.20%
40 NEW YORK N Y — 27.10%
41 ALABAMA FED AID HWY FIN AUTH S — 27.06%
42 NEW YORK ST DORM AUTH ST PERS — 26.63%
43 ILLINOIS ST — 26.38%
44 OREGON ST — 26.29%
45 CHICAGO ILL WASTEWATER TRANSMI — 26.19%
46 YONKERS N Y — 25.93%
47 OMAHA PUB PWR DIST NEB SEPARAT — 25.87%
48 LOS ANGELES CALIF DEPT WTR & P — 25.85%
49 GARLAND TEX ELEC UTIL SYS REV — 25.75%
50 ROUND ROCK TEX INDPT SCH DIST — 25.51%

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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