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 Lifetime of Earnings Estimate how much you have the potential to earn during your working years. What Smart Investors Know Savvy investors take the time to separate emotion from fact. What Is the Dividend Yield? This calculator helps determine your pre-tax and after-tax dividend yield on a particular stock.