This ETF tracks the FTSE/JSE Rafi 40 index which is designed to include those companies best ranked on fundamental factors. It uses four fundamental measures when ranking a company: sales, cash flow, book value and dividends. This results in a fund which tends to have a "value strategy" as it identifies shares which offer value. RAFI stands for “Research Affiliates Fundamental Indexation”. Research Affiliates is a California-based financial services company that has registered the patent for fundamental indexation globally.