PSC seeks long-term capital growth by targeting small-caps in the US equity market. To build the portfolio, utilizing a proprietary, quantitative model, components of the Russell 2000 Index are screened for value, quality, and momentum. The resulting portfolio is initially weighted equally according to these three characteristics, and then weights are adjusted in favor of liquidity and low volatility. In constructing the model and managing the portfolio, the fund adviser uses insights from multiple sources, including internal research, industry reports, and third-party data. While the portfolio is rebalanced at least annually, the fund adviser has the discretion to make adjustments. Prior to September 30, 2020, the fund name was Principal U.S. Small-Cap Multi-Factor Index ETF. On July 8, 2022, the fund ceased tracking the NASDAQ US Small Cap Select Leaders Index and transitioned to an active management strategy. Then on June 30, 2023, PSC dropped 'Multi-Factor' from its fund name.