Microsoft stock rose on Monday after a report that the company was revising the terms of its partnership with OpenAI to allow the ChatGPT maker to launch an initial public offering. The companies also are rewriting the terms of a wider contract that was drafted when Microsoft and OpenAI first unveiled an exclusive partnership in 2019, the Financial Times reported, citing people familiar with the matter. OpenAI didn’t immediately respond to a request for comment from Barron’s; Microsoft, through a spokesperson, declined to comment.