The Fund employs a passive management or indexing investment approach designed to track the performance of the Index. The Fund generally uses a representative sampling strategy to achieve its investment objective, meaning it generally will invest in a sample of the securities in the Index whose risk, return and other characteristics resemble the risk, return, and other characteristics of the Index as a whole. Under normal circumstances, at least 80 percent of the Funds total assets (exclusive of collateral held from securities lending) will be invested in constituent securities of the Index and investments that have economic characteristics that are substantially identical to the economic characteristics of such constituent securities.