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 I Invest in Gold? Learning more about gold and its history may help you decide whether it has a place in your portfolio. The Business Cycle Understanding the economy's cycles can help put current business conditions in better perspective. 5 Smart Investing Principles Principles that can help create a portfolio designed to pursue investment goals.