SPTB was created on 2024-05-20 by SPDR. The fund's investment portfolio concentrates primarily on investment grade fixed income. The ETF currently has 178.56m in AUM and 282 holdings. SPTB tracks a market value-weighted index of investment-grade US Treasury securities with various maturities, not less than one year. minimum maturity of one year. The fund targets the Treasury exposure represented in the Agg.