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. Estimating the Cost of College This worksheet can help you estimate the costs of a four-year college program. What Is the Dividend Yield? This calculator helps determine your pre-tax and after-tax dividend yield on a particular stock.