The investment seeks to provide investment results that, before fees and expenses, correspond generally to the total return performance of an index derived from the aerospace and defense segment of a U.S. total market composite index. In seeking to track the performance of the S&P Aerospace & Defense Select Industry Index (the "index"), the fund employs a replication strategy. It generally invests substantially all, but at least 80%, of its total assets in the securities comprising the index. The index represents the aerospace and defense industry group of the S&P Total Market Index ("S&P TMI"). The fund is non-diversified.