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 | Related Content Investments You’ve made investments your whole life. Work with us to help make the most of them. A Look at Diversification Diversification is an investment principle designed to manage risk, but it can't prevent against a loss. Keys to Investing for Retirement There are some key concepts to understand when investing for retirement.