The Fund seeks to track the investment results of the Russell Microcap Index; the Underlying Index, which measures the performance of the microcap sector of the U.S. equity market, as defined by FTSE Russell the Index Provider or Russell. The Underlying Index is a float-adjusted capitalization-weighted index and includes equity securities issued by issuers with total market capitalizations ranging from approximately $4 million to $4.6 billion, although this range may change from time to time.