TMFC tracks an index of US stocks, selected by Motley Fool analysts, which are recommended in Motley Fool research newsletters, such as Stock Advisor and Rule Breakers. The index also includes the 150 top-rated stocks in the Motley Fool IQ analyst opinion database. Each publication follows a distinct research strategy that targets specific areas of the market, such as small-cap or penny stocks, dividend-paying stocks, or value stocks. From this selection pool, the index chooses the 100 largest US companies by market cap and weights them according to market capitalization. The following securities are excluded: ADRs, GDR, EDRs, preferred stocks, closed-end funds, exchange-traded funds and derivatives. The index undergoes quarterly reconstitution.