IBDT vs IBDZ: Grades, Fees and Holdings Compared

iShares iBonds Dec 2028 Term Corporate ETF

IBDTANYSE Arca

iShares iBonds Dec 2034 Term Corporate ETF

IBDZBNYSE Arca

Overlap

No data

Expense ratio

IBDT0.10%IBDZ0.10%

Avg volume · 30D

IBDT 4.6×the volume

IBDT723KIBDZ156K

IBDT vs IBDZ Performance

Oct 31, 2025 – Oct 30, 2026

+2.7%IBDT−0.5%IBDZ

Expense ratio: IBDT 0.10%; IBDZ 0.10%
Fund size: IBDT $4.15B; IBDZ $913M
1Y total return: IBDT +2.7%, better; IBDZ −0.5%
Yield (12M): IBDT 4.52%; IBDZ 5.05%, better
Holdings: IBDT 740; IBDZ 384
Avg volume (30D): IBDT 723K sh, better; IBDZ 156K sh
NAV per share: IBDT $25.05; IBDZ $25.08
52W range

ETF.net Grade

Pillar letters and Scores for IBDT, IBDZ, with each pillar’s weight
Pillar	IBDT	IBDZ
Cost30% weight	C50	C50
Mission25% weight	A100Higher	A95
Risk15% weight	B68Higher	D27
Tradability15% weight	A91Higher	C46
Holdings10% weight	A96Higher	A80
Durability5% weight	A83Higher	B60

Rank among Defined-Maturity Investment Grade Corporate funds

How we build Categories ›

Same Category. IBDT and IBDZ are both graded against the same 42 Defined-Maturity Investment Grade Corporate funds, so their Grades compare head to head.

Defined-Maturity Investment Grade Corporate⁠

Category · 42 funds

See all 42 ›

IBDT ranks 3rd and IBDZ 24th of 42 funds in the Defined-Maturity Investment Grade Corporate Category.

Rank 1AVBCBVanguard Target Maturity 2028 Corporate Bond ETFScore 82
Rank 2AVBCAVanguard Target Maturity 2027 Corporate Bond ETFScore 78
Rank 3AIBDTiShares iBonds Dec 2028 Term Corporate ETFScore 77
Rank 4AVBCCVanguard Target Maturity 2029 Corporate Bond ETFScore 76
Rank 24BBSCQInvesco BulletShares 2026 Corporate Bond ETFScore 60
Rank 24BIBDZiShares iBonds Dec 2034 Term Corporate ETFScore 60
Rank 26BBSCYInvesco BulletShares 2034 Corporate Bond ETFScore 59

Our read on each fund

ETF.net Research

IBDTAiShares iBonds Dec 2028 Term Corporate ETF

IBDZBiShares iBonds Dec 2034 Term Corporate ETF

In short

IBDT Acts more like a bond than a bond fund: roughly 700 investment-grade corporate bonds that all mature in 2028, wrapped in one ticker with a defined end date. Built for ladder rungs, monthly distributions and a known finish line.

IBDZ A far rung on the iBonds corporate ladder: roughly 400 investment-grade corporate bonds that all mature in 2034, in one ticker with a built-in end date. Ladder discipline, no CUSIP shopping.

Stated mandate

IBDT The fund seeks to track an index of investment-grade corporate bonds maturing in 2028 and is designed to support income generation, bond-ladder construction, and interest-rate-risk management through a defined maturity.

IBDZ The fund seeks to track an index of investment-grade corporate bonds maturing in 2034.

Why people hold it

IBDT The defined 2028 maturity does the work: one ticker behaves like a ladder rung, no hunting down individual bonds or tracking each one's maturity.ishares.com
About 700 investment-grade corporate bonds inside, so no single issuer carries the outcome the way it would in a handful of hand-picked bonds.
Costs 0.10% a year, right at the typical fee for target-maturity bond funds, and it is one of the more actively traded names in that group.
Launched in 2018 and now a multi-billion-dollar fund, it ranks among the strongest implementations in the target-maturity bond group.

IBDZ Built like a bond, traded like a fund: it tracks the Bloomberg December 2034 Maturity Corporate Index and terminates at the end of its term year instead of rolling on forever.
0.10% a year, right at the middle of the target-maturity crowd, and it holds about 400 investment-grade corporates so no single issuer runs the show.
Pays monthly, which suits people stacking rungs for a known future expense rather than watching a quarterly calendar.
Tracking has been tight against its stated index, and the fund sits in the upper half of a target-maturity field of well over 100 competitors.

Worth knowing

IBDT Vanguard's VBCB targets the same 2028 corporate maturity for 0.08%, two basis points cheaper.
This is corporate credit, not Treasuries. The bonds are investment grade, but downgrades and defaults are still part of the picture.
It has a finish line. When the 2028 term ends the strategy is over, so the what-next decision lands back with you.ishares.com

IBDZ A 2034 maturity means far more interest-rate sensitivity than the near rungs of the same ladder, like the 2029 vintage (IBDU). Longer wait, bigger price swings along the way.
Corporate credit, not government paper. Downgrades and defaults are live risks here in a way they are not for the Treasury version of the same ladder (IBTJ).
Launched in 2024, so the track record is short, and it is moderately traded rather than a volume monster. Limit orders are your friend.

Full IBDT profile⁠

Full IBDZ profile⁠

IBDT vs IBDZ Holdings

How IBDT and IBDZ differ

No overlap figure

Two bond funds rarely hold the same issues.

Level by level

Sector17 Sectors0.0%
Countryby domicile94.2%
Asset classFixed Income100%

Sector

Sector weights in IBDT and IBDZ, widest gap first
Sector	More in IBDTMore in IBDZ	IBDT	IBDZ
Corporate	IBDZ +99.7 points	0.0%	99.7%
Banking	IBDT +15.0 points	15.0%	0.0%
Consumer Discretionary	IBDT +12.9 points	12.9%	0.0%
Health Care	IBDT +11.8 points	11.8%	0.0%
Electric	IBDT +10.3 points	10.3%	0.0%
Capital Goods	IBDT +9.9 points	9.9%	0.0%
Energy	IBDT +6.9 points	6.9%	0.0%
Consumer Non-Cyclical	IBDT +6.4 points	6.4%	0.0%
Communications	IBDT +6.1 points	6.1%	0.0%
Reits	IBDT +4.7 points	4.7%	0.0%
Finance Companies	IBDT +4.1 points	4.1%	0.0%
Insurance	IBDT +3.2 points	3.2%	0.0%
Brokerage/Asset Managers/Exchanges	IBDT +2.8 points	2.8%	0.0%
Basic Industry	IBDT +2.8 points	2.8%	0.0%
Transportation	IBDT +2.2 points	2.2%	0.0%
Natural Gas	IBDT +0.9 points	0.9%	0.0%
Securitized	IBDZ +0.3 points	0.0%	0.3%

Country, concentration and asset class

Country by domicile

Country weights in IBDT and IBDZ, widest gap first
Country	More in IBDTMore in IBDZ	IBDT	IBDZ
United States	IBDZ +5.1 points	85.3%	90.4%
United Kingdom	IBDT +1.7 points	2.2%	0.5%
Japan	IBDT +1.8 points	3.0%	1.2%
Australia	IBDT +0.9 points	1.3%	0.4%
Other countries (13)	IBDT +0.6 points	8.2%	7.6%

Concentration

Weight in the 10 largest Holdings

IBDT6.2%
IBDZ8.2%

Securities held

IBDT737
IBDZ382

Asset class

IBDT: Fixed Income
IBDZ: Fixed Income

Holdings

Two bond funds rarely hold the same issues, so this page lists no shared Holdings. IBDT holds 737 securities, IBDZ 382.

All 740 IBDT holdings⁠All 382 IBDZ holdings⁠

How we measure overlap

Each holding counts at its smaller weight in the two funds, summed over the full Holdings. Sector, country and asset class use the same rule on each fund’s split. Cash, FX and derivative lines stay out of the counts. Two bond funds get no overlap figure.

IBDT vs IBDZ Cost

Same expense ratio

$2,106

On $10,000 over 30 years. 7% growth a year before fees, expense ratio only.

IBDT 0.10%
$2,106
IBDZ 0.10%
$2,106

Amount$10,000

Years30 years

Cost over time

IBDT 0.10%
IBDZ 0.10%

Year by year

Year	IBDT	IBDZ
10	$183	$183
20	$717	$717
30	$2,106	$2,106

Expense ratio

0.10%IBDT
0.10%IBDZ

IBDT0.10%IBDZ0.10%

0.08%0.15%

Middle half of Defined-Maturity Investment Grade Corporate funds
Median 0.10%

IBDT 11th cheapest of 42 funds

IBDZ 11th cheapest of 42 funds

IBDT vs IBDZ Dividends

Last 12 months to Oct 30, 2026

Yield (12M): IBDT 4.52%; IBDZ 5.05%, better
Payout (12M): IBDT $1.13; IBDZ $1.27
Last payment: IBDT $0.09; IBDZ $0.11
Ex-dividend: IBDT Oct 1, 2026; IBDZ Oct 1, 2026
Paid on: IBDT Oct 6, 2026; IBDZ Oct 6, 2026
Frequency: IBDT Monthly; IBDZ Monthly

Distribution history

Per share, 2023 to 2026, same scale for both

IBDTMonthly · 45 paymentsAll IBDT payments⁠

IBDZMonthly · 28 paymentsAll IBDZ payments⁠

IBDT vs IBDZ Risk

Fall from peak · 5 years

This chart needs five years of history for both funds.

Risk facts

VolatilityStd dev, 3 years: IBDT 3.4%IBDZ 5.0%since Jun 2024
Return per unit of riskSharpe ratio, 3 years: IBDT 0.57IBDZ 0.11since Jun 2024
Worst fallMax drawdown, 5 years: IBDT −16.7%IBDZ −5.6%since May 2024
Market sensitivityBeta, 5 years: IBDT 0.60IBDZ 0.17; Market = 1

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