https://www.cnbc.com/2018/03/26/ftc-confirms-facebook-data-breach-investigation.html

Shares of Facebook fell as much as 5 percent Monday after the FTC confirmed it's investigating the company's data practices in the wake of the Cambridge Analytica breach.

"The FTC takes very seriously recent press reports raising substantial concerns about the privacy practices of Facebook. Today, the FTC is confirming that it has an open non-public investigation into these practices," the agency said in a statement.