BLST vs SPAB

BLSTBBluemonte Short Term Bond ETF

SPABAState Street SPDR Portfolio Aggregate Bond ETF

In short

BLST One ticket, an actively managed basket of short-duration bond ETFs: Treasuries, corporates, TIPS and securitized debt, with a four-year average maturity ceiling written into the prospectus. Rate risk kept on a short leash.

SPAB A 2007-vintage core bond fund priced at 0.03%: roughly 8,500 US investment-grade bonds in one ticket, at the same rock-bottom fee the household names charge for the same index.

Stated mandate

BLST The Fund seeks total return and income. It is actively managed and obtains at least 80% bond exposure, primarily through underlying funds holding short-duration debt securities.

SPAB The fund seeks to track the price and yield performance of the Bloomberg U.S. Aggregate Bond Index before fees and expenses, providing broad exposure to U.S.-dollar-denominated investment-grade bonds.

Why people hold it

• BLST The maturity leash is in the prospectus: underlying funds hold debt averaging no more than four years, five years max. Far less rate whiplash than a total bond index.sec.gov
• All-in cost is 0.22% net of a waiver through August 31, 2027 (0.27% gross), and that figure already includes the 0.02% the underlying ETFs charge. Below the category median.sec.gov
• Investment grade is the floor: underlying funds buy debt rated BBB/Baa or better at purchase. Income is paid out monthly.sec.gov
• What it owns matches what it says it owns, with the mix spread across government, corporate and securitized short paper.sec.gov

• SPAB 0.03% a year against a 0.36% median for its peer group, and the same ticket price as AGG, SCHZ and BBAG on the identical index.
• Roughly 8,500 dollar-denominated investment-grade bonds in one line item, tracking the Bloomberg U.S. Aggregate Bond Index. Diversification you could not assemble bond by bond.ssga.com
• Trades actively and has tracked its index closely, putting it among the stronger implementations in the core-bond group.
• Running since 2007, now a multi-billion-dollar fund, and it pays monthly rather than quarterly.

Worth knowing

• BLST The index giants cost a fraction: AGG and BND charge 0.03%. Here you pay an active manager for duration and sector calls on top of the ETFs they buy.sec.gov
• It launched in 2025, so there is only a short record to judge, and it is not one of the category's heavily traded names.
• Distributions can include return of capital, which hands back your own money rather than income the portfolio earned.

• SPAB Bond prices move opposite yields. When rates rise the index falls and the fund follows it down; a 0.03% fee cannot cushion that.
• AGG, SCHZ and BBAG hold the same declared index at the same 0.03%. Picking among them comes down to spreads and platform, not the portfolio.
• Investment grade and US dollar only by mandate: high yield and foreign-currency debt sit outside the remit.ssga.com

Full BLST profile⁠

Full SPAB profile⁠