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. What’s Your Investment IQ? You make decisions for your portfolio, but how much do you really know about the products you buy? Try this quiz Saving for College This calculator can help you estimate how much you should be saving for college.