
Facebook shares have fallen almost 40% since the social-media giant said in July that it expects growth to slow and profit margins to narrow in coming years. Its main social network is reaching a saturation point, so it needs to explore new types of business models. The company has also been facing scandals over its handling of misinformation and user data.
Facebook said in a regulatory filing that its board had previously authorised share repurchases of up to US$15 billion as part of a program started in 2017. The US$9 billion buy back announced on Friday is in addition to those prior authorisations, the company said.
Facebook shares rose 1.4% in extending trading. Earlier on Friday, the stock closed at US$137.42 in New York.