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 Content What Can a Million Dollars Buy You? $1 million in a diversified portfolio could help finance part of your retirement. Four Really Good Reasons to Invest There are four very good reasons to start investing. Do you know what they are? 5 Smart Investing Principles Principles that can help create a portfolio designed to pursue investment goals.