TikTok Faces U.S. Ban After Appeals Court Denies Bid to Overturn New Law

The law will ban the video app in the United States by Jan. 19 if its owner, ByteDance, does not sell it to a non-Chinese company.

Substack’s Bet on Politics Newsletters Leads to Subscriber Growth

The newsletter start-up, which once drew an overture from Elon Musk, is betting on politics content and recruiting stars. But profits remain elusive.

Biden Administration Extends Review Period for Nippon Takeover of U.S. Steel

U.S. Steel’s chief, David Burritt, expressed confidence on Tuesday that the sale of the American manufacturer to a Japanese owner would close “on its merits” despite bipartisan backlash.

What Trump Selling His Trump Media Shares Could Mean for Stakeholders

A lockup provision has kept him from being able to sell Trump Media shares. With that prohibition about to expire, the price is down more than 70 percent from its peak.

Biden Expected to Block U.S. Steel Takeover by Nippon

The Committee on Foreign Investment in the United States is expected to raise national security concerns about selling the iconic steel producer to Japan’s Nippon Steel.

How Microsoft’s Satya Nadella Became Tech’s Steely Eyed A.I. Gambler

Microsoft’s all-in moment on artificial intelligence has been defined by billions in spending and a C.E.O. counting on technology with huge potential and huge risks.