SPDR Trust, Series 1 (the Trust) is a unit investment trust. The Trust is an exchange-traded fund created to provide investors with the opportunity to purchase a security representing a proportionate undivided interest in a portfolio of securities consisting of substantially all of the common stocks, in substantially the same weighting, which comprise the Standard & Poor's 500 Composite Price Index (the S&P Index). Each unit of fractional undivided interest in the Trust is referred to as a Standard & Poor's Depositary Receipt (SPDR).
The Trust utilizes a full replication approach. With this approach, all 500 securities of the Index are owned by the Trust in their approximate market capitalization weight.