BSSX vs IBMR

BSSXCInvesco BulletShares 2033 Municipal Bond ETF

IBMRAiShares iBonds Dec 2029 Term Muni Bond ETF

In short

BSSX One rung of a municipal bond ladder in a single ticker. BSSX tracks an index of U.S. munis whose effective maturities all land in 2033, spreading roughly 1,600 of them across one fund.

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

BSSX The fund is based on the Invesco BulletShares® USD Municipal Bond 2033 Index and invests at least 80% of its assets in municipal bonds included in that index. The index covers U.S. dollar-denominated municipal securities with effective maturities in 2033.

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

Why people hold it

• BSSX Roughly 1,600 municipal bonds in one 2033 rung, spreading issuer risk far wider than a hand-built ladder of a few bonds.
• Defined maturity is baked in: the index holds only munis with effective maturities in 2033, so the portfolio's remaining life shortens as that year approaches.
• Income arrives monthly, and the mandate is tight: at least 80% of assets in municipal bonds from its named 2033 index.

• 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

• BSSX At 0.18% a year it sits above the target-maturity norm. Treasury and corporate rungs such as IBTJ (0.07%) and BSCT (0.10%) charge less for the same ladder idea.
• A smaller fund that trades thinly, so bid-ask spreads can run wide. Limit orders are the standard defense.
• Launched in 2023, so it carries a short track record and a long stretch of rate and credit weather before its bonds come due.

• 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 BSSX profile⁠

Full IBMR profile⁠