The American Century STOXX U.S. Quality Value ETF tracks an index that tries to identify undervalued large cap companies that have stronger financial fundamentals relative to rivals. The index screens stocks based on value, quality, and income. The fund aims to have 30 percent to 80 percent of its portfolio in value stocks, and 20 percent to 65 percent in stocks that exhibit sustainable income. Money managers have long recognized that certain factors, when deployed during certain market conditions, have consistently rewarded investors, such as volatility, value, quality, growth, and price momentum. So-called value stocks — defined as companies with low share prices relative to their fundamentals — have historically outperformed the market over the long-term. Factor ETFs have proliferated in recent years and there are many active and passive ETF options that target different factors. Some target a single factor while others invest in a combination. VALQ is reasonably priced for a multi-factor index fund, though it’s more expensive than ultra-low-cost plain-vanilla index ETFs. VALQ also owns a relatively narrow slice of the market, so investors sacrifice diversification in exchange for the factor strategy. VALQ could make a good complement for a core equity holding for investors who want a multi-factor approach and believe in American Century’s strategy. Investors should compare price, performance, and portfolio against plain-vanilla index funds and other multi-factor ETFs in the U.S. equity space, as well as quality, value, and dividend-focused ETFs.