BSMZ vs IBMR

BSMZCInvesco BulletShares 2035 Municipal Bond ETF

IBMRAiShares iBonds Dec 2029 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.

IBMR A muni ladder rung in one ticker: it holds investment-grade municipal bonds maturing in 2029, tracks an AMT-free index, and pays monthly. Bond-style term structure, ETF plumbing.

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.

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

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.

• IBMR Charges 0.10% a year, right at the median for target-maturity bond funds, and the iBonds lineup is built so maturity years stack into a ladder.
• Spreads across more than a thousand investment-grade munis, so one issuer's trouble barely moves the fund.
• Follows an AMT-free index, screening out bonds whose income can trip the alternative minimum tax.
• Pays monthly, matching how muni income is usually spent, and holds a well-built portfolio for its category.

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.

• IBMR Munis are the tax-advantaged lane. For the same 2029 rung in taxable bonds, iShares also runs IBDU (corporate) and IBTJ (Treasury).
• The index is callable-adjusted: plenty of munis can be redeemed early by their issuers, so the mix heading into the term date can shift.
• It is a fund, not a single bond. Shares trade at market prices and move with rates along the way, and the end payout is whatever the bonds deliver.

Full BSMZ profile⁠

Full IBMR profile⁠