CABRERA: After a roller-coaster ride on Wall Street, what can investors expect this week? CNN's Alison Kosik has your "Before the Bell" report. Hi, Alison.</s>ALISON KOSIK, CNN GENERAL ASSIGNMENT CORRESPONDENT: Hi, Ana. Volatility is the new normal on Wall Street. Stocks kicked off the second quarter with wild swings. Every day seemed to bring a new headline about tariffs, escalating fears of a trade war with China. The headline risk isn't going away, but this week big tech is also in focus. Facebook founder and CEO Mark Zuckerberg testifies twice before Congress. Lawmakers are expected to grill him about user privacy. Facebook now says 87 million users may have had their information shared with data from Cambridge Analytica. That's up from the 50 million users originally estimated. Shares of Facebook are down more than 10 percent since the data privacy scandal erupted. Corporate earnings could also provide direction to the stock market this week. On Friday, JPMorgan Chase, Wells Fargo, and Citigroup all released first-quarter results. In New York, I'm Alison Kosik.</s>CABRERA: Coming up, live in the CNN NEWSROOM, reports of an unconscionable chemical attack in Syria, prompting President Trump to publicly attack Vladimir Putin by name for the first time. A live report on the heightened tensions between the world's two nuclear superpowers next.
Facebook CEO to Testify Before Congress.