Microsoft stock jumped more than 4% during the intraday Wall Street session on Tuesday, 28 October 2025, after the tech giant reached a $500 billion valuation deal with the artificial intelligence (AI) ChatGPT-maker OpenAI.
Microsoft and OpenAI reached a deal which seeks to allow the ChatGPT maker to restructure its business into a public benefit corporation, which will give the company more freedom in its business operations.
Mint reported earlier that after the restructuring deal, Microsoft will hold a $135 billion or 27% stake in OpenAI Group PBC, which will be controlled by the OpenAI Foundation, according to the official announcement. OpenAI is currently undergoing a transition from a non-profit to a public benefit corporation.
OpenAI also said that the company’s non-profit would now be called OpenAI Foundation, which will hold around $130 billion in the for-profit business. The company’s new for-profit business will be known as OpenAI Group PBC.
According to a Reuters report citing a company spokesperson, OpenAI’s Chief Executive Officer (CEO), Sam Altman, will not receive any equity in the restructured entity. However, the company has no plans to focus on a potential public offering.
Microsoft Share Price
Microsoft share price jumped more than 4% to hit an intraday high of $553.72 during Tuesday’s Wall Street session. The shares of the big tech firm were trading 2.18% higher at $543.23 as of 12:45 p.m. (EDT), compared to $531.52 at the previous market session.
Shares of the company have given stock market investors more than 168% returns on their investment in the last five years, and over 27% returns in the last one-year period.
On a year-to-date (YTD) basis, Microsoft shares have risen 29.65% in 2025 and are up 5.49% in the last one-month period. The company’s shares are trading 4.20% higher in the last five market sessions on Wall Street.
Microsoft share price hit its 52-week high level at $555.45, while the 52-week low level was at $344.79, according to the data collected from Marketwatch. The company’s market capitalisation (M-Cap) stood at $3.95 trillion as of the stock market session on Tuesday, 28 October 2025.
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