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 Eight Mistakes That Can Upend Your Retirement There are common mistakes you can avoid when saving for retirement. Building Your Legacy A four-step framework for building a personal legacy. Tax Freedom Day Assess how many days you'll work to pay your federal tax liability.