iShares® iBonds® Dec 2045 Term Treasury ETF

iShares® iBonds® Dec 2045 Term Treasury ETF

About

iShares® iBonds® Dec 2045 Term Treasury ETF (US46438G4148) is a US-listed bond ETF tracking the ICE 2045 Maturity US Treasury Index. With a expense ratio of 0.07%, it ranks among the lowest-cost options in its category, paying distributions. The fund holds 9 positions across 1 region with 10M in assets, with heavy concentration — 100% in United States, 100% in government bonds.

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%) 9.2 Tracking Difference: 9.1 · TD Consistency: — · Expense Ratio: 9.4
Liquidity (25%) 3.2 Assets Under Management

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

Ticker IBGB
ISIN
Fund Size $9.8M
Issuer iShares
Distribution Pays Distributions
Replication Physical
Inception Mar 2025
Base Currency USD
Index ICE 2045 Maturity US Treasury Index
Asset Class Bonds
Category Us Treasury

Costs

9.2
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 0.07%

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 +4.57%
3 Years —
5 Years —
10 Years —
YTD -0.28%
Since Inception +1.58%

Holdings

This fund invests into 9 individual investments.
#1
United States Treasury Note/Bond
15.37%
#2
United States Treasury Note/Bond
14.98%
#3
United States Treasury Note/Bond
14.68%
#4
United States Treasury Note/Bond
14.60%
#5
United States Treasury Note/Bond
10.37%
#6
United States Treasury Note/Bond
10.31%
#7
United States Treasury Note/Bond
9.91%
#8
United States Treasury Note/Bond
9.75%
#9
BLK CSH FND TREASURY SL AGENCY
0.02%
View all holdings (9)
# Holding Ticker Weight
1 United States Treasury Note/Bond — 1537.26%
2 United States Treasury Note/Bond — 1498.27%
3 United States Treasury Note/Bond — 1468.34%
4 United States Treasury Note/Bond — 1459.82%
5 United States Treasury Note/Bond — 1036.76%
6 United States Treasury Note/Bond — 1031.06%
7 United States Treasury Note/Bond — 990.78%
8 United States Treasury Note/Bond — 975.25%
9 BLK CSH FND TREASURY SL AGENCY — 2.45%

Sectors

Allocation by industry sector.
 
Sector Weight
Government Bonds 9998.00%
Unknown 2.00%

Regions

Geographic allocation by country of risk.
 
Country Weight
United States 9998.00%
UNKNOWN 2.00%

Similar ETFs

Other funds tracking US Treasury indices.
iShares 7-10 Year Treasury Bond ETF
IEF·Expense Ratio 0.15%
iShares U.S. Treasury Bond ETF
GOVT·Expense Ratio 0.05%
iShares 20+ Year Treasury Bond ETF
TLT·Expense Ratio 0.15%
iShares 1-3 Year Treasury Bond ETF
SHY·Expense Ratio 0.15%
iShares 0–1 Year Treasury Bond ETF
SHV·Expense Ratio 0.15%
iShares 3-7 Year Treasury Bond ETF
IEI·Expense Ratio 0.15%
Compare IBGB vs IEF Compare IBGB vs GOVT Compare IBGB vs TLT
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