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 The Business Cycle How will you weather the ups and downs of the business cycle? A Decision Not Made Is Still a Decision Investors who put off important investment decisions may face potential consequence to their future financial security. 5 Smart Investing Strategies Getting what you want out of your money may require the right game plan.