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 Message Thank you! Oops! Related Content Inflation and Your Portfolio Even low inflation rates can pose a threat to investment returns. The Utility of Sector Investing Successful sector investing is dependent upon an accurate analysis about when to rotate in and out. What Is the Dividend Yield? This calculator helps determine your pre-tax and after-tax dividend yield on a particular stock.