This ETF primarily allocates its assets to the securities comprising its underlying index, dedicating a minimum of 80% of its total capital, and often substantially more, to these holdings. To effectively replicate the index's performance, the fund retains the flexibility to hold a limited portion of its portfolio in equity securities not part of the index, along with cash, cash equivalents, or various money market instruments like repurchase agreements and money market funds. The underlying index itself is designed to gauge the performance of smaller-capitalization companies within the U.S. stock market.