This Dec. 21, 2016, file photo shows the New York Stock Exchange. Stock indexes are mostly lower in early trading on Wall Street as investors weigh the latest batch of corporate quarterly earnings reports. Losses in technology companies outweighed gains in banks and other sectors early Thursday, July 26, 2018. (AP Photo/Mark Lennihan, File)
A plunge in Facebook shares erased almost $120 billion of the social media giant’s market value Thursday, snapping a three-day winning streak for the S&P 500 index.