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 Inflation and Your Portfolio Even low inflation rates can pose a threat to investment returns. Inflation & Your Money It's important to understand how inflation is reported and how it can affect investments. Keys to Investing for Retirement There are some key concepts to understand when investing for retirement.