May proved to be a challenging month for investors. The NASDAQ was the big US winner last month, rallying almost 6%. That's in stark contrast to the DJIA, which was off more than 3%. It's one of the biggest disparities in US stock market performance in years. Joining Julia to discuss what might happen next is Lisa Shalett, Chief Investment Officer of Wealth Management at Morgan Stanley. To learn more about how CNN protects listener privacy, visit cnn.com/privacy