BSMZ vs IBMP

BSMZCInvesco BulletShares 2035 Municipal Bond ETF

IBMPAiShares iBonds Dec 2027 Term Muni Bond ETF

In short

BSMZ A single rung of a municipal bond ladder, wrapped in an ETF. It holds roughly 1,400 munis, then terminates around Dec. 15, 2035, giving you a bond's end date without picking the bonds yourself.

IBMP A single rung of a muni ladder in one ticker: investment-grade bonds that all mature in 2027, tax-exempt income paid monthly along the way, and a defined end date instead of a fund that rolls on forever.

Stated mandate

BSMZ The fund seeks exposure to US dollar-denominated municipal securities from U.S. states, state agencies, and local issuers, targeting bonds maturing in 2035 and terminating around Dec. 15, 2035.

IBMP The fund seeks to track an index of investment-grade municipal bonds maturing in 2027. It is designed to provide tax-exempt income, support bond-ladder construction, and manage interest-rate risk through a defined maturity.

Why people hold it

• BSMZ Defined maturity: it targets bonds maturing in 2035 and terminates around Dec. 15, 2035. An end date, not an evergreen fund that rolls on forever.invesco.com
• Roughly 1,400 positions from US states, state agencies and local issuers, so no single borrower carries the portfolio. The holdings are the strongest part of the package.
• Invesco has run the BulletShares playbook for years, and its corporate rungs (BSCT, BSCU) sit among the best-executed funds in the target-maturity group.

• IBMP Built to act like a bond, not a bond fund: the portfolio matures in 2027 and the whole design points at that date, which is what makes ladder-building possible with one trade.ishares.com
• 0.10% a year, right at the typical target-maturity bond fund, and it tracks an AMT-free index, so the tax-exempt income isn't pulled back in by the alternative minimum tax.
• Roughly 1,800 municipal bonds, so no single issuer carries the fund. That spread is hard to replicate buying individual munis one CUSIP at a time.
• Income lands monthly, and this 2027 rung has been running since 2019, so it isn't a fresh launch built for the moment.

Worth knowing

• BSMZ At 0.18% a year, it runs above the typical target-maturity bond fund. Fee drag bites harder when the underlying yields are muni-sized.
• Launched in 2025 and thinly traded so far. Thin volume tends to mean wider spreads, which is what limit orders are for.
• Distributions land on an irregular schedule rather than a fixed monthly rhythm, so the income stream needs more watching than a clockwork payer.

• IBMP The 0.10% fee is the category median, not a discount. Treasury and corporate rungs like IBTJ (0.07%) and VBCB (0.08%) cost less, though neither pays tax-exempt muni income.
• The tax exemption is the entire pitch, and it does no work inside an IRA or 401(k), where the income is already sheltered.
• Trading is moderate rather than heavy, so order size and timing matter more here than in the most heavily traded bond ETFs.

Full BSMZ profile⁠

Full IBMP profile⁠