The SPDR Portfolio Long Term Treasury ETF (SPTL) aims to replicate the price and yield performance of the Bloomberg Long U.S. Treasury Index, prior to accounting for fees and operating expenses. This fund is a member of the economical State Street SPDR Portfolio ETF lineup, a collection of foundational investment vehicles crafted to deliver broad and diversified access to key asset categories. It provides investors with targeted and broad exposure to U.S. Treasury securities that possess a remaining maturity of ten years or more. Given its extended duration, this ETF is typically more responsive to shifts in interest rates compared to investments with shorter maturities. Its portfolio is structured using market capitalization weighting and undergoes rebalancing on the last business day of each month.