PRFZ is more of a fundamental small-cap portfolio than a true extended market fund. The index calculates a fundamental weight for the components of the FTSE USA Total Cap Index based on their book values, dividends, free cash flows and total sales. It then selects firms ranked 1,001-2,500 by fundamental weight, rather than by market cap. This process effectively removes most mid-caps. PRFZ then weights holdings by their fundamental factors, further tilting the portfolio smalla large majority of the portfolio is allocated to small- and micro-caps. From a size perspective, PRFZ pairs well with sibling fund PRF, which is the large-cap version of this fund. The index is rebalanced and reconstituted annually.