5 Smart Investing Strategies The slideshow presentation that you would like to view is too large for your current screen resolution. Click here to view to view the slideshow at full resolution. Launch Presentation » 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. Why Regular Rebalancing Makes Sense Without your knowing, your investment portfolio could be off-kilter. What Is the Dividend Yield? This calculator helps determine your pre-tax and after-tax dividend yield on a particular stock.