About the ETF

SPAB was created on 2007-05-23 by SPDR. The fund's investment portfolio concentrates primarily on investment grade fixed income. The ETF currently has 8603.93m in AUM and 7812 holdings. SPAB tracks a market value-weighted index of the aggregate USD-denominated investment-grade bond market with at least one year to maturity.

SPAB offers market-like exposure to the broad investment grade space by investing in both corporate and government bonds publicly for sale in the US. It follows the Bloomberg US Aggregate Bond Index, which includes fixed rate, nonconvertible, and taxable bonds. It also invests in mortgage pass through, commercial mortgage-backed and other asset backed securities. The bonds must have a minimum of USD 300 million outstanding face value. The index is updated monthly, using a sampling strategy which means the fund does not hold all of the securities in the index