The State Street SPDR S&P 1500 Momentum Tilt ETF seeks to match the overall performance of the S&P 1500 Positive Momentum Tilt Index (the "Index") before any associated costs or fees. The Index is composed of stocks that show the most significant momentum, which is assessed by their price changes over the eleven months prior to one month before the Index is rebalanced. This Index then assigns a higher proportion to stocks with strong momentum and a lower proportion to those with weak momentum.