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 | Have A Question About This Topic? Name Email Address Question Thank you! Oops! Related Contents 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. The Utility of Sector Investing Successful sector investing is dependent upon an accurate analysis about when to rotate in and out. 5 Smart Investing Principles Principles that can help create a portfolio designed to pursue investment goals.