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 Comparing Investments This calculator compares the net gain of a taxable investment versus a tax-favored one. Choosing a Retirement Plan that Fits Your Business To choose a plan, it’s important to ask yourself four key questions. Tax Efficiency in Retirement What role would taxes play in your investment decisions?