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. The Investment Risk No One’s Ever Heard Of You face a risk for which the market does not compensate you, that can not be easily reduced through diversification. Contributing to an IRA? Determine if you are eligible to contribute to a traditional or Roth IRA.