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 Content What's My Potential Estate Tax? This calculator helps estimate your federal estate tax liability. Taxable vs. Tax-Deferred Savings Use this calculator to compare the future value of investments with different tax consequences. When Markets React When markets shift, experienced investors stick to their strategy.