Microsoft’s $135B AI Bet Pays Off – Stock Soars as OpenAI Unveils $500B Restructure
OpenAI finalized a major restructuring on Oct. 28, 2025, splitting into a nonprofit foundation and a for-profit Public Benefit Corp controlled by the nonprofit. Microsoft now owns 27% of the for-profit arm, valued at about $135 billion, and OpenAI committed to buy $250 billion in Azure services. OpenAI plans to spend $1.4 trillion on AI infrastructure in the coming years. Microsoft shares rose 4% intraday, hitting a record high.