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 Inflation and Your Portfolio Even low inflation rates can pose a threat to investment returns. Earnings for All Seasons Earnings season can move markets. What is it and why is it important? What Is the Dividend Yield? This calculator helps determine your pre-tax and after-tax dividend yield on a particular stock.