Bursting the Bubble Free Retirement Guide It's never too soon to start preparing for retirement. But do you know what to look out for? Download our free ebook, "Retire Happy: A Simple Guide to Your Next Big Adventure." First Name Last Name Email Address Thank you! Oops! 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 Contents Inflation and Your Portfolio Even low inflation rates can pose a threat to investment returns. The ABCs of Zero Coupon Bonds Understanding some basic concepts may help you assess whether zero-coupon bonds have a place in your portfolio. Keys to Investing for Retirement There are some key concepts to understand when investing for retirement.