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? Address Thank you! Oops! Related Contents What Smart Investors Know Smart investors take the time to separate emotion from fact. 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 5 Smart Investing Principles Principles that can help create a portfolio designed to pursue investment goals.