The investment seeks to provide investment results that, before fees and expenses, correspond to the total return performance of the Lattice Risk-Optimized US Large Cap Equity Strategy Index (LROUSLX). The fund generally invests at least 80 percent of its assets in securities of the index and in depositary receipts representing securities of the index. The index seeks to improve returns through a market cycle relative to traditional cap-weighted U.S. equity market indices and active U.S. equity market strategies.