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 Understanding the Alternate Valuation Date Executors can value the estate on the date of death, or on its six-month anniversary —the “Alternate Valuation Date." Retiree Health Care Coverage Overseas Retirees traveling abroad need to know that their health insurance travels with them. Tax Freedom Day Assess how many days you'll work to pay your federal tax liability.