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 Question Thank you! Oops! Related Content Conquering Retirement Challenges for Women Looking ahead can help you conquer these unique obstacles. Annuity Comparison This calculator compares a hypothetical fixed annuity with an account where the interest is taxed each year. Comparing Investments This calculator compares the net gain of a taxable investment versus a tax-favored one.