Under normal circumstances, the fund seeks to achieve its investment objective by investing at least 80% of its assets in securities in the index. The index provider constructs the index in accordance with a rules-based methodology that selects 50 companies from the S-Network U.S. Equity Large/Mid-Cap 1000 Index. The fund generally seeks to track the returns of the index before fees and expenses by employing a replication strategy that seeks to hold all the stocks in the index.