Bret Taylor, the chairman of OpenAI’s board, said the artificial intelligence company was “not for sale.” Mr. Musk is separately raising money for his A.I. start-up, xAI. By Cade MetzMike ...

Softbank, which is Arm's majority owner, is also the key financial partner for the project, and Softbank's influence across the tech world shouldn't be overlooked by investors. In fact, Softbank, ...