"What to buy next?" Almost every month, I ask myself this same question whenever my salary arrives or when a good amount of dividends have accumulated. When I first started investing, I wanted a diversified portfolio which is why I built the tool, iSuggest (iSuggest is free for all registered users). It worked well at first, as it quickly brought my portfolio risk down to a minimum. However, for those who are familiar with the modern portfolio theory, there is a limit to how much risk you can eliminate by diversifying. Soon, it appeared any stock I bought would not significantly increase or reduce my portfolio risk. This is actually where things gets interesting. It's basically telling me that I can go ahead and buy any stock I want without having to ......