IGSB vs ZTRE

IGSBAiShares 1-5 Year Investment Grade Corporate Bond ETF

ZTRECF/M 3-Year Investment Grade Corporate Bond Etf

In short

IGSB Corporate credit with the rate risk dialed down: roughly 4,700 investment-grade bonds, none maturing past five years, for four basis points. iShares has run it since 2007.

ZTRE ZTRE skips the maturity blender. It holds investment-grade corporate bonds with roughly three years left and rebalances monthly, so the three-year point on the credit curve stays the three-year point.

Stated mandate

IGSB The fund seeks to track an index containing U.S. dollar-denominated investment-grade corporate bonds with remaining maturities from one through five years.

ZTRE The fund seeks to track the ICE 3-Year US Target Maturity Corporate Index before fees and expenses. It is passively managed and normally invests at least 80% of assets in investment-grade corporate bonds maturing in approximately 2.5 to less than 3.5 years.

Why people hold it

• IGSB Four basis points a year, a fraction of the typical investment-grade corporate bond fund's fee and level with the cheapest tier of its peer group.
• One-to-five-year maturities mean prices move less when rates move than long-dated corporate funds. Same corporate credit, shorter leash.ishares.com
• Thousands of individual bonds tracking the ICE BofA 1-5 Year US Corporate Index, with income paid monthly.ishares.com
• Trading since 2007, actively traded, and one of the strongest builds in the investment-grade corporate group on cost, portfolio and execution.

• ZTRE Precision over averages: bonds must have 2.5 to under 3.5 years left, and monthly rebalancing keeps that maturity from drifting as the portfolio ages.fminvest.com
• 0.15% a year, under the typical investment-grade corporate ETF, and income lands monthly rather than on the semiannual schedule of the underlying bonds.fminvest.com
• Roughly 500 issues, weighted evenly by design, so the heaviest borrowers do not automatically claim the biggest slice the way they do in debt-weighted bond indexes.fminvest.com
• One rung of a corporate ladder the issuer built from two years out to ten, for investors who want to pick a spot on the curve instead of buying the whole thing.fminvest.com

Worth knowing

• IGSB Short maturities cut both ways: less price damage when rates rise, less lift when they fall.
• These are company bonds, not Treasuries. Investment grade, but credit spreads can widen and prices move with them.
• Only the front of the curve. Sibling IGIB runs 5-10 years and USIG spans broad maturities, both at the same fee.

• ZTRE Small and thinly traded since its 2024 debut, which can mean wider bid-ask gaps than the household names of the category.
• Fair price, not the floor: broad investment-grade rivals VCIT and IGSB run closer to 0.04%, though neither pins itself to a single maturity point.
• The fund has changed underlying indexes since launch, so the current benchmark is worth checking rather than assuming the original one still applies.fminvest.com

Full IGSB profile⁠

Full ZTRE profile⁠