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 Jane Bond: Decoding Diversification Agent Jane Bond is on the case, discovering how bonds diversify a portfolio. The Anatomy of an Index The S&P 500 represents a large portion of the value of the U.S. equity market, it may be worth understanding. What Smart Investors Know Savvy investors take the time to separate emotion from fact.