FFTY picks 50 leading growth companies that trade on US exchanges, potentially including ADRs. After screening out securities with extreme recent price movements, the universe is ranked by a composite of 11 different fundamental and technical metrics. The top 50 stocks are weighted in tiers, with more weight given to higher-ranking companies. Components of the index are reviewed on a weekly basis. Based on market-wide technical signals, FFTY may substitute half of its equity portfolio with Treasury bills. The index will remain half equity, half T-bills until a reversal signal occurs. Its worth noting that the funds high-turnover strategy could lead to poor tracking and/or taxable capital gains payouts.