General Motors (GM - Get Report)  is set to announce a billion-dollar investment in multiple U.S. factories. The investment is part of the normal process of equipping factories to build new models and has been planned for months, according to sources. It's expected to generate 1,000 jobs. Multiple factories will receive new investment.

British Prime Minister Theresa May is expected to confirm in a speech that the United Kingdom will leave the single market of the European Union. She is expected to detail a new and equal partnership between other EU countries.

A major tobacco merger is now one step closer to creating a global tobacco giant. British American Tobacco (BATS) and Reynolds American (RAI)  have agreed to the terms of their $49 billion deal. It would create the world's largest tobacco company.

International leaders and celebrities convened for the first day of the World Economic Forum in Davos, Switzerland.