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 Should You Invest in Exchange Traded Funds? There are hundreds of ETFs available. Should you invest in them? Best-Performing Asset Classes Bonds may outperform stocks one year only to have stocks rebound the next. What Is the Dividend Yield? This calculator helps determine your pre-tax and after-tax dividend yield on a particular stock.