When Markets React When markets shift, experienced investors stick to their strategy. Share | Related Content Bursting the Bubble Tulips were the first, but they won’t be the last. What forms a “bubble” and what causes them to burst? Four Really Good Reasons to Invest There are four very good reasons to start investing. Do you know what they are? Taxable vs. Tax-Deferred Savings Use this calculator to compare the future value of investments with different tax consequences.