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. Share | Have A Question About This Topic? Name Email Address Question Thank you! Oops! Related Contents The Cycle of Investing Understanding the cycle of investing may help you avoid easy pitfalls. The Business Cycle Understanding the economy's cycles can help put current business conditions in better perspective. What Is the Dividend Yield? This calculator helps determine your pre-tax and after-tax dividend yield on a particular stock.