To achieve the investment objective, the fund seeks to track the investment results of the MSCI USA Minimum Volatility (USD) Index (the Underlying Index), which has been developed by MSCI Inc. (the Index Provider or MSCI) to measure the performance of large- and mid-capitalization equity securities listed on stock exchanges in the U.S. that, in the aggregate, have lower volatility relative to the large- and mid-cap U.S. equity market. In constructing the Underlying Index, MSCI uses a rules-based methodology to select securities from the MSCI USA Index (the Parent Index), which is a capitalization-weighted index, and to determine the weightings of such securities. In order to determine weightings of securities within the Underlying Index, MSCI seeks to optimize the Parent Index such that the resulting portfolio exhibits the lowest absolute volatility, as measured by MSCI, while applying constraints based on turnover, minimum and maximum weightings of index constituents, sectors and countries, as well as factor constraints (for example, liquidity and financial leverage) as measured by MSCI.