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 The Pros and Cons of a NUA Strategy Learn the advantages of a Net Unrealized Appreciation strategy with this helpful article. Variable Universal Life Insurance Variable Universal Life is permanent insurance in which the policyholder directs how premiums are invested. U.S. Personal Savings Rate What can be learned from the savings rate?