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 My Retirement Savings Estimate how long your retirement savings may last using various monthly cash flow rates. Retirement Traps to Avoid Beware of these traps that could upend your retirement. A Look at Diversification Diversification is an investment principle designed to manage risk, but it can't prevent against a loss.