Oct. 28 (UPI) -- Microsoft and OpenAI announced on Monday a series of new business partnerships aimed at advancing artificial intelligence capabilities in U.S. commerce.

Stock value of Microsoft and Apple spiked Tuesday morning pushing both companies over a $4 trillion market cap following the announcement of the Microsoft, OpenAI deal.

Microsoft stock bounced roughly 3% in morning trading.

Microsoft initially hit the $4 trillion threshold in July.

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