https://phys.org/news/2018-07-twitter-plunge-black-week-social.html

The woes for Twitter came a day after Facebook lost an unprecedented $120 billion in market value following its earnings report that sent investors into a panic over cooling growth for the social network star.

Twitter said it posted a best-ever profit of $100 million in the second quarter, following a loss of $116 million a year earlier. Revenue rose 24 percent to $711 million.