IBDU vs VBCB

IBDUAiShares iBonds Dec 2029 Term Corporate ETF

VBCBAVanguard Target Maturity 2028 Corporate Bond ETF

In short

IBDU Buy one ticker, get hundreds of investment-grade corporate bonds that all come due in 2029. Then the fund winds up on or about December 15, 2029 and pays out what's left: a bond's end date with an ETF's diversification.

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

IBDU The fund seeks to track an index of investment-grade corporate bonds that mature in 2029.

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

• IBDU Acts like a single bond: it terminates on or about December 15, 2029 and distributes its remaining net assets, a defined end date instead of a perpetual fund's rolling duration.sec.gov
• Hundreds of investment-grade corporate bonds in one wrapper, with each issuer needing $300 million or more of face value to enter the index. One sour name gets diluted.sec.gov
• 0.10% a year, level with Invesco's 2029 BulletShares rung (BSCT) and at the cohort median, and it sits among the more tradable names in this group.
• Pays monthly, and the 2029 rung slots beside other dated funds if you want a ladder with set end dates rather than a rolling maturity.ishares.com

• 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

• IBDU Not a bond held to par: the fund does not seek to return any predetermined amount at maturity or in periodic distributions, and price moves with rates and credit until then.sec.gov
• In the final months, the bonds mature into cash and cash-like instruments, so the fund's yield drifts toward prevailing money market rates before the wind-up.ishares.com
• Corporate credit, not government paper, and the index includes non-US developed-market issuers. The same-year iShares Treasury rung (IBTJ) charges 0.07%.sec.gov

• 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 IBDU profile⁠

Full VBCB profile⁠