The State Street Materials Select Sector SPDR ETF seeks to provide investment results that, before expenses, correspond generally to the price and yield performance of the Materials Select Sector Index (the "Index").The Index seeks to provide an effective representation of the materials sector of the S&P 500 Index.Seeks to provide precise exposure to companies in the chemical; metals and mining; paper and forest products; containers and packaging; and construction material industries.Allows investors to take strategic or tactical positions at a more targeted level than traditional style based investing.