SPSB vs SUSB

SPSBAState Street SPDR Portfolio Short Term Corporate Bond ETF

SUSBBiShares ESG Aware 1-5 Year USD Corporate Bond ETF

In short

SPSB The short end of the corporate bond market, bought wholesale: roughly 1,600 investment-grade corporate bonds maturing in one to three years, for four basis points. Built as a cash-adjacent building block, not a yield swing.

SUSB Short-dated corporate bonds with an ESG filter. SUSB tracks a Bloomberg MSCI index of 1-5 year investment-grade US corporate debt screened for environmental, social and governance characteristics, at 0.12% a year.

Stated mandate

SPSB The fund seeks to track the price and yield performance of the Bloomberg U.S. 1-3 Year Corporate Bond Index before fees and expenses.

SUSB The fund seeks to track an index of short-term, investment-grade U.S.-dollar corporate bonds whose issuers have positive aggregate environmental, social, and governance characteristics.

Why people hold it

• SPSB Costs 0.04% a year against a 0.19% median for investment-grade corporate bond funds. At the short end, where yields are thin, that gap is a real slice of what you keep.
• Nothing in the index matures past three years, so rate moves push the price around less than they do at intermediate corporate funds like SPIB or VCIT.ssga.com
• Roughly 1,600 bonds, market-cap weighted, reconstituted at each month end, with a $300 million minimum issue size. Income arrives monthly.ssga.com
• Trading since 2009 and now a multi-billion-dollar fund that changes hands actively, one of the sturdier implementations in its peer group.

• SUSB Charges 0.12%, under the typical investment-grade corporate bond fund, and the portfolio behind it is one of the stronger builds in that group.
• Maturities stop at five years, so prices move less when rates shift than long-dated corporate debt does. Income is paid monthly.
• The ESG call is not a manager's hunch. It follows the Bloomberg MSCI US Corporate 1-5 Year ESG Focus Index, spread across roughly 1,700 bonds.
• Running since 2017 and now a multi-billion-dollar fund, so this is a screened bond strategy with real operating history and real scale behind it.

Worth knowing

• SPSB Pure corporate credit, no Treasury ballast. Investment-grade paper still reprices when spreads widen, short maturities or not.ssga.com
• Bonds roll off fast and get replaced at whatever the market pays, so the income stream follows prevailing rates in both directions.ssga.com
• The manager samples the index rather than buying every bond in it, so the portfolio can drift modestly from the benchmark.sec.gov

• SUSB The screen costs extra. IGSB, the unscreened iShares 1-5 year investment-grade corporate fund, charges 0.04%.
• ESG here means MSCI's definition, applied at the index level. If your own standards differ, the holdings list is the place to check.
• Trading is moderate rather than heavy, so spreads can run wider than at the category giants like VCIT and USIG.

Full SPSB profile⁠

Full SUSB profile⁠