The investment seeks to provide investment results that, before fees and expenses, correspond generally to the total return performance of an index that tracks the performance of publicly traded companies in the insurance industry. In seeking to track the performance of the S&P Insurance Select Industry Index (the index), the fund employs a sampling strategy. It generally invests substantially all, but at least 80%, of its total assets in the securities comprising the index. The index represents the insurance segment of the S&P Total Market Index (S&P TMI).