The fund will invest at least 80% of its net assets, plus any borrowings for investment purposes, in securities of companies in the underlying index and derivatives and other instruments whose performance is expected to correspond to that of the underlying index. The index is composed of those constituents of the S&P MidCap 400® that exhibit the strongest growth characteristics as measured using three factors: sales growth,ratio of earnings change to price, and momentum. The fund is non-diversified.