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 Investments You’ve made investments your whole life. Work with us to help make the most of them. Global vs. International: What’s The Difference? International funds invest in non-U.S. markets, while global funds may invest in U.S. stocks alongside non-U.S. stocks. Taxable vs. Tax-Deferred Savings Use this calculator to compare the future value of investments with different tax consequences.