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Among the 6 biggest deal dispatches this past week, Microsoft is reportedly in talks to invest billions in ChatGPT owner OpenAI. Here’s the full list, as covered in real time on InvestingPro. Sign up to get this news first.

Microsoft in talks to take big stake in OpenAI: report

Microsoft (NASDAQ:MSFT) is said to be in discussions to invest up to $10 billion in OpenAI, the creator of the ChatGPT platform, according to a report by Semafor. The funding round will also include other venture capital firms, and values OpenAI at around $29 billion.

As part of the deal, Microsoft will reportedly take in 75% of OpenAI's profits until the initial investment is recouped. After that point, Microsoft will hold a 49% stake in OpenAI, while other investors will also hold a 49% stake, and OpenAI's nonprofit parent will hold a 2% stake.

The report comes amid speculation that Microsoft is planning to incorporate OpenAI’s technology into its Office and email software products. According to previous reports, Microsoft had invested around $1 billion in cash and cloud credits into OpenAI in 2019, and has been considering increasing its investment in the company.

Microsoft shares rose 5.5% for the week.

Heavy M&A action in health and biotech

CinCor Pharma (NASDAQ:CINC) rocketed some 150% after AstraZeneca (NASDAQ:AZN) agreed to buy out the company for $26 per share, or $1.3 billion, a 121% premium over CinCor’s most recent close. The deal also includes a contingent value right of $10 per share in cash, or $500 million, “payable upon a specified regulatory submission of a baxdrostat product.” CinCor closed the week at $28.95.

Amryt (NASDAQ:AMYT) shares soared 107% after Chiesi Farmaceutici agreed to buy the Ireland-based biopharma for $14.50 per American depositary share (ADS), or $1.25 billion in cash, plus contingent value rights worth up to another $2.50 per ADS - or $225 million - if certain milestones are achieved. Amryt ended the week at $14.72.

Oak Street Health (NYSE:OSH) shares gained more than 27% last Monday after Bloomberg News reported that CVS Health (NYSE:CVS) is in advanced talks to acquire the company and is prepared to pay more than $10 billion to close the deal in the coming weeks.

Rounding out last week's hot deals

Also on Monday, Duck Creek Technologies (NASDAQ:DCT) shares surged more than 46% after the company announced it has agreed to be acquired by Vista Equity Partners for $19.00 per share in an all-cash transaction valued at approximately $2.6 billion.

And in that same session, Paya Holdings (NASDAQ:PAYA) shares gained more than 24% on news it had agreed to be purchased by Nuvei (NASDAQ:NVEI) in an all-cash transaction at $9.75 per share, or some $1.3 billion.

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We read at: Investing.com