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 What Can a Million Dollars Buy You? $1 million in a diversified portfolio could help finance part of your retirement. Best-Performing Asset Classes Bonds may outperform stocks one year only to have stocks rebound the next. Saving for College This calculator can help you estimate how much you should be saving for college.