CCSB vs IGSB

CCSB—Carbon Collective Short Duration Green Bond ETF

IGSBAiShares 1-5 Year Investment Grade Corporate Bond ETF

In short

CCSB Most short-duration corporate bond ETFs buy whatever the index holds. CCSB screens for bonds whose proceeds are earmarked for climate work, verified by ICMA labeling or the Climate Bonds Standard, and picks them actively.

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.

Stated mandate

CCSB The Fund seeks maximum total return while preserving capital through prudent investment management.

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.

Why people hold it

• CCSB The green label has teeth: at least 80% of assets in bonds self-labeled under ICMA guidelines or certified to the Climate Bonds Standard, not an issuer's general ESG claim.sec.gov
• Two sub-advisers split the work: Artesian Capital Management runs the bond book, Carbon Collective runs the climate screen. Selection is a judgment call, not an index rule.sec.gov
• Sits at the calmer end of the bond aisle by design: weighted-average investment grade credit (BBB- or better) and average duration under five years, which damps rate sensitivity.sec.gov
• Pays income monthly rather than quarterly.

• 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.

Worth knowing

• CCSB Costs 0.50% a year against a 0.15% short investment-grade median, and index peers like VCSH and SCHJ (0.03%) deliver plain short-corporate exposure for pennies.
• Small and thinly traded, so spreads and limit orders matter more here than with the category's giants.
• Launched in 2024, so the track record is short, and an active green mandate can look quite different from a broad short-corporate index.sec.gov

• 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.

Full CCSB profile⁠

Full IGSB profile⁠