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 | Related Content Should You Invest in Exchange Traded Funds? There are hundreds of ETFs available. Should you invest in them? The Business Cycle Understanding the economy's cycles can help put current business conditions in better perspective. 5 Smart Investing Strategies Getting what you want out of your money may require the right game plan.