Check out which companies are making headlines before the bell:
Tyson Foods — The poultry and beef producer earned an adjusted 96 cents per share for its latest quarter, missing estimates of $1.17 a share. Revenue and forward guidance missed, as well. Tyson also announced that President Tom Hayes will succeed Donnie Smith as chief executive officer on December 31.
3M — 3M was downgraded to "sell" from "neutral" at Goldman Sachs.
Facebook — Facebook announced a stock buyback of up to $6 billion, to begin in the first quarter of 2017. Separately, Facebook said its Chief Accounting Officer Jas Athwal will leave the company on February 17.
Netflix — Brean began coverage of the video streaming service with a "buy" rating, saying Netflix has created an "unstoppable lead" in the internet TV business.
Citigroup — Citi replaced HSBC in an annual list of 30 banks deemed globally systemic by the G-20's financial stability board. Those banks are required to hold extra capital to insure financial stability.
Novartis — Novartis is buying privately held U.S. drugmaker Selexys Pharmaceuticals for up to $665 million. Selexys specializes in treatments for blood diseases.
GlaxoSmithKline — The drugmaker filed for U.S. approval of its new three-in-one inhaled lung drug, meaning it could reach the market ahead of similar treatments by rivals AstraZeneca and Novartis. The drug is designed to offer a single treatment for patients with chronic obstructive pulmonary disease.
Blackstone — The private-equity firm is in talks to sell as much as $2.3 billion in Japanese property to China's Anbang Insurance, according to sources quoted by Reuters.
Wal-Mart — The retailer plans to begin offering Cyber Monday deals on Black Friday, following up its recent announcement that it plans to increase its online inventory significantly.
Apple — Apple will replace iPhone 6s batteries for free for customers who are experiencing an unexpected shutdown problem. Apple said there is no safety issue and the problem affects only a limited number of phones.
Wells Fargo — Wells Fargo was hit with new management restrictions by the Office of the Comptroller of the Currency, with the bank now required to get approval before making various business decisions or giving out executive severance packages. The restrictions cancel some aspects of the OCC's September settlement with Wells Fargo.
Headwaters — Headwaters is being bought by Australian construction firm Boral for $1.86 billion in cash, or $24.25 per share. Headwaters is a Utah-based maker of building products.
GoDaddy — GoDaddy is finalizing a roughly $1.8 billion bid for European web hosting firm Host Europe Group, according to London's Sunday Times. GoDaddy is competing with United Internet for Host Europe, with Deutsche Telekom having dropped out of the bidding.
Intel — Intel is cutting its investment in wearable device technology and may exit the market altogether, according to sources quoted by TechCrunch. However, the chip maker is denying that this is the case.