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 The Junk Drawer Approach to Investing It's easy to let investments accumulate like old receipts in a junk drawer. Your Shifting Risk Tolerance Time and market performance may subtly and slowly imbalance your portfolio. Taxable vs. Tax-Deferred Savings Use this calculator to compare the future value of investments with different tax consequences.