Microsoft Achieves $4 Trillion Valuation

Microsoft Achieves $4 Trillion Valuation

28 October 2025

Microsoft's market valuation has surpassed $4 trillion as OpenAI finalises its corporate restructuring. This milestone reflects investor confidence in Microsoft's strategic direction, particularly its close partnership with OpenAI and advancements in AI and cloud computing.

OpenAI, initially founded as a non-profit, has transitioned to a public benefit corporation (PBC) to facilitate further investment and growth. This restructuring allows OpenAI to pursue a for-profit model while maintaining its commitment to public good. Microsoft retains a significant stake in OpenAI, solidifying its position in the AI landscape. The restructuring provides OpenAI with greater flexibility in raising capital and forming new partnerships, potentially paving the way for a future public listing.

The move enables OpenAI to seek diverse investors and reduce its reliance on Microsoft, fostering broader AI infrastructure development. The restructuring also addresses previous tensions between the two companies, securing Microsoft's role while allowing OpenAI to explore other opportunities.

Source:ft.com

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Published on 28 October 2025
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