The Rule of 72 Do you know how long it may take for your investments to double in value? The Rule of 72 is a quick way to figure it out. Share | Related Content Investments You’ve made investments your whole life. Work with us to help make the most of them. Investment Challenges of the Affluent Investor Affluent investors face unique challenges when putting together an investment strategy. Make sure you keep these in mind. What Is the Dividend Yield? This calculator helps determine your pre-tax and after-tax dividend yield on a particular stock.