Microsoft closes at all-time high on fresh OpenAI-related optimism

Microsoft ended Tuesday’s trading session at a record high of $360.53 on Tuesday, following fresh optimism about growth from a key partner in artificial intelligence. The 1.12% daily increase gives the software maker a market value of about $2.68 trillion.

The major U.S. indices all posted gains for the day, with the S&P 500 notching its seventh consecutive rise, while Microsoft delivered its eighth. The stock hadn’t been on such a streak since January 2021.

At an event in San Francisco on Monday, Microsoft’s strategic AI partner, OpenAI, announced a slew of updates, including price cuts and plans to allow people to make custom versions of the ChatGPT chatbot. Microsoft CEO Satya Nadella was on hand for the affair, and he emphasized that developers building applications with OpenAI’s tools could get to market quickly by deploying their software on Microsoft’s Azure cloud infrastructure.

Microsoft has invested a reported $13 billion in OpenAI, which has granted Microsoft an exclusive license on OpenAI’s GPT-4 large language model that can generate human-like prose in response to a few words of text. Last week Microsoft announced the release of an AI add-on for its Office productivity app subscriptions and an assistant in Windows 11, both of which rely on OpenAI models.

“What is good for OpenAI is good for Azure in our view,” UBS analysts led by Karl Keirstead wrote in a note distributed to clients on Monday. “If OpenAI is now actively courting software developers to build apps using ChatGPT/GPT-4, lowering price points and improving model performance, it could drive greater OpenAI consumption of Azure and serve as a modest positive for Microsoft.” The analysts have a buy rating on Microsoft stock.

Oppenheimer analysts, with the equivalent of a buy rating, said that OpenAI’s price updates confirm OpenAI’s status as the…