Targeting the extended market segment of the developed ex-US equity market, PDN selects the next 1,500 largest companies (ranked 1,001-2,500) in the RAFI Global Equity Investable Universe. The fund then ranks and weights each holding by fundamental measures (sales, book value, cash flow, and dividends), rather than by market value of equity. From a size perspective, PDN complements sibling fund PXF, which is the large-cap version of this fund. The index is rebalanced quarterly in March, June, September, and December. Prior to March 24, 2025, the fund tracked the FTSE RAFI Developed ex-U.S. Mid Small 1500 Index and was called the Invesco FTSE RAFI Developed Markets ex-U.S. Small-Mid ETF.