The Fund employs a passive management or indexing investment approach designed to track the performance of the Index. The Fund generally uses a replication strategy to achieve its investment objective, meaning it generally invests in all of the securities of the Index in approximately the same proportion as the Index. However, the Fund also may use a representative sampling strategy to 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. The Fund generally will use a representative sampling strategy when the Adviser or Sub-Adviser believes it will better position the Fund to seek to achieve its investment objective, such as when buying each security in an Index is impracticable or inefficient, or when one or more securities in the Index becomes unavailable, including as a result of legal restrictions or limitations that apply to the Fund and/ or a security in the Index. Under normal circumstances, the Fund primarily invests in the constituent exchange-traded funds (ETF) of the Index. However, the Fund also may invest directly in fixed-income securities.