What Smart Investors Know Smart investors take the time to separate emotion from fact. Share | Related Content 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. Earnings for All Seasons Earnings season can move markets. What is it and why is it important? 5 Smart Investing Strategies Getting what you want out of your money may require the right game plan.