SPAB — SPDR Portfolio Aggregate Bond ETF
SPAB is State Street's ultra-low-cost broad US bond market ETF, completing the trio of 0.03% total bond market funds alongside BND and SCHZ. It tracks the Bloomberg US Aggregate Bond Index, providing exposure to thousands of US investment-grade bonds including Treasuries, mortgage-backed securities, and corporates. SPAB is part of SPDR's Portfolio ETF series designed for low-cost core portfolio building.
Top Holdings
Strategy
- →Use as the low-cost bond core in a SPDR Portfolio ETF suite (SPLG + SPAB + SPDW)
- →Pair with broad equity ETFs for a simple, ultra-low-cost balanced portfolio
- →Rebalance annually back to target bond allocation
- →Use in any brokerage account where BND or AGG commission costs are a concern
Best For
- ✓SPDR platform investors building a complete low-cost portfolio
- ✓Cost-conscious investors who want the same exposure as BND/AGG at equal cost
- ✓Passive investors who want a zero-decision broad bond market holding
- ✓Those building an all-SPDR Portfolio ETF suite for tax efficiency
Key Risks
- ⚠Same risks as BND/AGG — interest rate sensitivity, credit risk, inflation exposure
- ⚠Smaller AUM than BND may result in slightly wider bid-ask spreads
- ⚠Moderate duration of ~6 years creates meaningful sensitivity to rate changes
- ⚠No active management to navigate rate cycles
Similar ETFs
Frequently Asked Questions
How does SPAB compare to BND and AGG?
All three track the Bloomberg US Aggregate Bond Index and charge 0.03%. The main difference is issuer (SPDR vs. Vanguard vs. iShares) and liquidity/AUM. BND and AGG are larger and more liquid. Performance is essentially identical. This is educational content, not financial advice.
What is the SPDR Portfolio ETF series?
SPDR Portfolio ETFs are State Street's low-cost core index ETFs designed to compete with Vanguard and Schwab on price. SPAB is the bond component alongside SPLG (US equity) and SPDW (international equity). This is educational content, not financial advice.
Does SPAB pay monthly dividends?
Yes, SPAB distributes monthly income from the interest on its broad bond portfolio. This is educational content, not financial advice.
Is SPAB suitable for IRAs?
Yes, SPAB works well in IRAs as the bond allocation component of a retirement portfolio. Its broad diversification and very low cost make it appropriate for long-term retirement savers. This is educational content, not financial advice.
What is SPAB's duration?
SPAB has a duration of approximately 6 years, similar to BND and AGG, as they all track the same index. This is educational content, not financial advice.
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