Keys to Investing for Retirement 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 It Was the Best of Times, It Was the Worst of Times All about how missing the best market days (or the worst!) might affect your portfolio. How Stocks Work Understanding how a stock works is key to understanding your investments. 5 Smart Investing Principles Principles that can help create a portfolio designed to pursue investment goals.