The stock will come back, just as Wells Fargo, United Airlines, and Intel stock came back after their scandals.<p>Facebook in particular will come back because there is no alternative social network with nearly as many people on it. The fundamentals of the business aren't really at risk -- most of the users will stay. The impact of potential privacy-related regulation is already priced in to a large extent because everyone already knew that GDPR was going to happen before this latest scandal broke, and Facebook was already prepared to comply with it. I doubt the US Congress in its current state would pass anything as strict as that.