This is a passive, defined-maturity bond ETF that tracks an index of federally tax-exempt, investment-grade U.S. municipal bonds expected to mature in 2026. It has a fixed maturity date.

It suits conservative taxable investors who want tax benefits and plan to hold until a set maturity date while managing interest rate risk.

It is a passive (index-tracking) ETF managed by iShares.

The fund tracks an index of federally tax-exempt, investment-grade municipal bonds expected to mature in 2026. Unlike typical bond funds, which keep rolling their maturities forward, it has a fixed maturity like an individual bond, and at maturity the remaining assets are liquidated and returned to investors.

• A structure with a fixed maturity, like an individual bond
• Well suited to building bond ladders and managing interest rate risk

Assets under management (AUM) stand at $499.4M, and the expense ratio is 0.10% per year.

Unlike general municipal bond ETFs, it has a fixed maturity, so holding to maturity makes its cash flows easier to predict. With maturity approaching, its duration is short, so price swings from interest rate changes tend to be small.

Municipal bonds are influenced by the direction of interest rates and the fiscal condition of local governments. As maturity approaches, duration shortens and price swings from rate changes tend to diminish gradually, and the defined-maturity structure makes the path over the holding period easier to predict.

Money tends to flow into defined-maturity municipal bond ETFs among taxable investors who want after-tax income and a set maturity date, and fund flows vary with demand for bond ladder construction.

Its strengths are tax benefits and low interest rate risk thanks to a shortened maturity, while liquidation at maturity and credit risk are the drawbacks.

MUB, VTEB, JMUB and others shown in the table are broad municipal bond ETFs that keep rolling their maturities forward and have no defined-maturity structure. For more municipal exposure, you can also compare the short-term municipal bond ETF SUB and defined-maturity municipal bond ETFs with other maturities, such as IBMP and IBMQ. They differ in maturity structure, duration and expense ratio, so it is best to choose according to your investment goals.

These are points to review before investing in IBMO. As a defined-maturity municipal bond ETF, it is important to check the maturity structure, credit quality, tax benefits and reinvestment plan in advance.

With maturity near, the assets will be liquidated soon, so you need to make a reinvestment plan, and the fund is exposed to deteriorating finances at the issuing local governments. You should also consider that the short maturity means lower yields than long-term bonds.

This is a defined-maturity ETF that suits conservative taxable investors who want tax benefits and plan to hold until a set maturity date while managing interest rate risk. If you want ongoing exposure without a maturity date, a broad municipal bond ETF may be the alternative, and if you want a fixed maturity, IBMO may be the alternative.