In our weekly “Ask Todd” series, a reader asked: “Todd, can you give me three quick criteria to sort individual stocks worth investigating from those that have no investment merit?” The quick and dirty answer is “your question has an underlying false premise.” Individual security selection is only the last 10-20% of return on any properly diversified portfolio and takes 80% of your analyisis time to figure out. Pareto’s Law dictates you can get 80% of the investment return for 20% of the effort if you just follow these simple criteria…