COWZ provides broad-based US large-cap equity exposure with the investment thesis that higher free cash flow is a mark of stability. Starting with the Russell 1000 selection universe, COWZ screens companies based on their average projected free cash flows and earnings (if available) for the next two fiscal years. Companies without these forward year estimates will remain in the index universe, however, firms with negative earnings or free cash flow are filtered out. The remaining companies are ranked according to their twelve-month free cash flow yield and the top 100 names are included in the index. At each quarterly rebalance, constituents are weighted based on their trailing twelve-month free cash flow with a 2% cap applied on any single security.