STXG seeks to track the total return performance of an index comprised of US-listed large- and mid-cap companies that have growth characteristics. The fund determines eligible growth companies by screening the Bloomberg US 1000 Index for companies with higher forecasted growth, higher valuations, lower earnings yield and lower dividend yield. Eligible companies are then ranked based on a value formula that equally considers earnings yield, valuation, dividend yield and growth. Using these rankings, the top 30% of the securities are included in the index based on their market cap, while the next 40% of securities are included at a decreasing linear scale with the full 100% weight given at the 30% percentile and a 0% weight given at the 70th percentile. Stocks falling in the bottom 30% are excluded. The index is reconstituted in January and July, with such changes taking effect in March and September. Rebalancing occurs in June and December.