< PrevNext > 41. Facebook Menlo Park, Calif. Share 2016 U.S.-Booked Air Volume: $100 millionAccording to BTN's estimate, Facebook's U.S.-booked air volume increased 28 percent in 2016. Facebook—which owns Instagram, WhatsApp and virtual reality technology Oculus—increased revenue 54 percent to $27.6 billion, primarily owing to an increase in newsfeed ads revenue, according to its annual report. Advertising sales account for 97 percent of the social network's revenue. Facebook's 2016 expenses totaled $15.2 billion, up 30 percent from the previous year. At the end of the year, it employed 17,048, a 34 percent year-over-year increase.