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 Investments You’ve made investments your whole life. Work with us to help make the most of them. Mutual Funds vs. ETFs Exchange-traded funds have some things in common with mutual funds, but there are differences, too. What Is the Dividend Yield? This calculator helps determine your pre-tax and after-tax dividend yield on a particular stock.