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 Message Thank you! Oops! Related Content Social Security Taxes Estimate how much of your Social Security benefit may be considered taxable. Should You Invest in Exchange Traded Funds? There are hundreds of ETFs available. Should you invest in them? Estimate Your RMD Help determine the required minimum distribution from an IRA or other qualified retirement plan.