5 Smart Investing Principles 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 » Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content The Utility of Sector Investing Successful sector investing is dependent upon an accurate analysis about when to rotate in and out. A Look at Diversification Diversification is an investment principle designed to manage risk, but it can't prevent against a loss. What's My Potential Estate Tax? This calculator helps estimate your federal estate tax liability.