IBDU vs VBCA

IBDUAiShares iBonds Dec 2029 Term Corporate ETF

VBCAAVanguard Target Maturity 2027 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.

VBCA Vanguard showed up late to the bond-ladder aisle and priced it accordingly: one rung of investment-grade corporate bonds, all maturing in 2027, wrapped in an ETF at 0.08%.

Stated mandate

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

VBCA The fund seeks to track a market-weighted index of U.S.-dollar-denominated, investment-grade corporate bonds that mature in 2027.

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

• VBCA At 0.08%, it undercuts the target-maturity norm, where iShares iBonds and Invesco BulletShares rungs run 0.10%.
• Its bonds are scheduled to mature between January 1 and December 15, 2027, and the index has a planned liquidation around that date, so duration winds down instead of resetting forever.sec.gov
• Market-weighted and investment-grade only: a single maturity year spread across the US corporate market rather than a handful of hand-picked bonds.
• Stands among the stronger implementations in a crowded target-maturity group, on cost and portfolio discipline.

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

• VBCA Launched in 2026 and still small, it trades thinly; spreads can be wider than on established bond ETFs.
• Corporate credit, not Treasuries: downgrades and defaults come with the territory. Treasury-only rungs such as IBTJ sidestep that risk.
• Short operating history, so there is limited data so far on how closely it tracks its index.

Full IBDU profile⁠

Full VBCA profile⁠