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 Message Thank you! Oops! Related Content What Smart Investors Know Smart investors take the time to separate emotion from fact. The Utility of Sector Investing Successful sector investing is dependent upon an accurate analysis about when to rotate in and out. What Is the Dividend Yield? This calculator helps determine your pre-tax and after-tax dividend yield on a particular stock.