Bursting the Bubble Tulips were the first, but they won’t be the last. What forms a “bubble” and what causes them to burst? Share | Have A Question About This Topic? Name Email Address Question Thank you! Oops! Related Contents 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. Investing with Your Heart For some, the social impact of investing is just as important as the return, perhaps more important. Taxable vs. Tax-Deferred Savings Use this calculator to compare the future value of investments with different tax consequences.