It's been a rough couple of weeks for Facebook (NASDAQ: FB). After revelations that its data was used against its authorization by Cambridge Analytica to target and influence voters in the 2016 election, concerns about how Facebook handles user data are rising once again. The Federal Trade Commission (FTC) said on Monday that it was investigating the misuse of personal data from Facebook users in the wake of the scandal.

Over the past year, the market has continued one of its most successful periods in history, with a bull run that's almost a decade old showing little sign of coming to an end.