IBDZ vs VBCB: Grades, Fees and Holdings Compared

iShares iBonds Dec 2034 Term Corporate ETF

IBDZBNYSE Arca

Vanguard Target Maturity 2028 Corporate Bond ETF

VBCBANasdaq

Overlap

No data

Expense ratio

VBCB −0.02pt a year

IBDZ0.10%VBCB0.08%

Avg volume · 30D

IBDZ 6.0×the volume

IBDZ156KVBCB25.9K

IBDZ vs VBCB Performance

Jul 31, 2026 – Oct 30, 2026

−0.7%IBDZ+0.6%VBCB

Expense ratio: IBDZ 0.10%; VBCB 0.08%, better
Fund size: IBDZ $913M; VBCB $117M
1Y total return: IBDZ −0.5%; VBCB No data
Yield (12M): IBDZ 5.05%; VBCB No data
Holdings: IBDZ 384; VBCB 667
Avg volume (30D): IBDZ 156K sh, better; VBCB 25.9K sh
NAV per share: IBDZ $25.08; VBCB $75.14
52W range

ETF.net Grade

Pillar letters and Scores for IBDZ, VBCB, with each pillar’s weight
Pillar	IBDZ	VBCB
Cost30% weight	C50	A89Higher
Mission25% weight	A95	A100Higher
Risk15% weight	D27	A88Higher
Tradability15% weight	C46Higher	C40
Holdings10% weight	A80	A84Higher
Durability5% weight	B60Higher	B56

Rank among Defined-Maturity Investment Grade Corporate funds

How we build Categories ›

Same Category. IBDZ and VBCB 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 ›

VBCB ranks 1st 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 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

IBDZBiShares iBonds Dec 2034 Term Corporate ETF

VBCBAVanguard Target Maturity 2028 Corporate Bond ETF

In short

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.

VBCB Vanguard finally showed up to the bond-ladder party. VBCB owns U.S. investment-grade corporate bonds that all mature in 2028, and it undercuts the typical target-maturity rung on fees.

Stated mandate

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

VBCB The fund seeks to track a market-weighted index of U.S.-dollar-denominated, investment-grade corporate bonds that mature in 2028.

Why people hold it

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.

VBCB Charges 0.08% a year, below the 0.10% typical for target-maturity bond funds and below the iBonds and BulletShares rungs (IBDU, BSCT, BSCU) it lines up against.
Every bond in the index is dollar-denominated investment grade maturing in 2028: one rung of a bond ladder in one ticker, with income paid quarterly.
A plain market-weighted ICE index run through Vanguard's index plumbing, and one of the stronger builds in the target-maturity bond group.

Worth knowing

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.

VBCB Launched in 2026 and still small, it trades thinly, so spreads can run wider than on the long-established corporate ladders.
Corporate credit, not Treasuries. Investment grade lowers the odds of trouble, but downgrades and defaults stay in the mix.
One maturity year, not a whole curve. This is a rung, not a stand-in for a broad bond fund.

Full IBDZ profile⁠

Full VBCB profile⁠

IBDZ vs VBCB Holdings

How IBDZ and VBCB differ

No overlap figure

Two bond funds rarely hold the same issues.

Level by level

Countryby domicile88.4%
Asset classFixed Income100%

Sector

No Sector split for VBCB.

Country, concentration and asset class

Country by domicile

Country weights in IBDZ and VBCB, widest gap first
Country	More in IBDZMore in VBCB	IBDZ	VBCB
United States	IBDZ +9.8 points	90.4%	80.6%
United Kingdom	VBCB +4.4 points	0.5%	4.9%
Japan	VBCB +2.1 points	1.2%	3.3%
Australia	VBCB +1.6 points	0.4%	2.0%
Canada	VBCB +1.0 points	3.8%	4.8%
Germany	VBCB +1.0 points	0.0%	0.9%
Switzerland	VBCB +0.6 points	0.0%	0.6%
Singapore	IBDZ +0.5 points	0.5%	0.0%
Other countries (9)	IBDZ +0.4 points	3.3%	2.9%

Concentration

Weight in the 10 largest Holdings

IBDZ8.2%
VBCB6.2%

Securities held

IBDZ382
VBCB662

Asset class

IBDZ: Fixed Income
VBCB: Fixed Income

Holdings

Two bond funds rarely hold the same issues, so this page lists no shared Holdings. IBDZ holds 382 securities, VBCB 662.

All 382 IBDZ holdings⁠All VBCB 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.

IBDZ vs VBCB Cost

Overpaying IBDZ vs VBCB

$417

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

IBDZ 0.10%
$2,106
VBCB 0.08%
$1,689

Amount$10,000

Years30 years

Cost over time

IBDZ 0.10%
VBCB 0.08%
Overpaying

Year by year

Year	IBDZ	VBCB	Overpaying
10	$183	$147	$36
20	$717	$575	$142
30	$2,106	$1,689	$417

Expense ratio

0.10%IBDZ
0.08%VBCB, cheaper

VBCB0.08%IBDZ0.10%

0.08%0.15%

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

VBCB cheapest of 42 funds

IBDZ 11th cheapest of 42 funds

IBDZ vs VBCB Dividends

Last 12 months to Oct 30, 2026

Yield (12M): IBDZ 5.05%; VBCB No data
Payout (12M): IBDZ $1.27; VBCB No data
Last payment: IBDZ $0.11; VBCB $0.26
Ex-dividend: IBDZ Oct 1, 2026; VBCB Oct 1, 2026
Paid on: IBDZ Oct 6, 2026; VBCB Oct 5, 2026
Frequency: IBDZ Monthly; VBCB Monthly

Distribution history

Per share, 2024 to 2026, same scale for both

IBDZMonthly · 28 paymentsAll IBDZ payments⁠

VBCBMonthly · 6 paymentsAll VBCB payments⁠

IBDZ vs VBCB Risk

Fall from peak · 5 years

This chart needs five years of history for both funds.

Risk facts

VolatilityStd dev, 3 years: IBDZ 5.0%since Jun 2024VBCB No data
Return per unit of riskSharpe ratio, 3 years: IBDZ 0.11since Jun 2024VBCB No data
Worst fallMax drawdown, 5 years: IBDZ −5.6%since May 2024VBCB No data
Market sensitivityBeta, 5 years: IBDZ 0.17VBCB 0.05; Market = 1

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