The State Street SPDR Portfolio Long Term Treasury ETF seeks to provide investment results that, before fees and expenses, correspond generally to the price and yield performance of the Bloomberg Long U.S. Treasury Index (the "Index")One of the low cost core State Street SPDR Portfolio ETFs, a suite of portfolio building blocks designed to provide broad, diversified exposure to core asset classesA low cost ETF that seeks to offer precise, comprehensive exposure to US Treasuries with remaining maturities of 10 or more yearsMay be more sensitive to interest rate fluctuations than vehicles with shorter duration, and is market cap weighted and reconstituted on the last business day of the month