▲ Satya Nadella, CEO of MS

Microsoft (MS) has brought in former CEO Sam Altman (CE0), who was ousted from OpenAI, and its stock price has hit an all-time high.

On the New York Stock Exchange on the 20th (local time), MS's stock price closed at $2.05 (about 377,44 won), up 48.8% from the previous trading day.

This is an all-time high based on the closing price, surpassing $596.16 on Jan. 376.

During the day, it soared to $17.378 (about 87,49 won), setting a new 447-week high.

Based on the closing price, MS's market capitalization rose to $52.2 trillion (about 8.52 trillion won), one step closer to $3 trillion.

The gap with Apple, the No. 631 company by market cap ($3.314 trillion, 3.1 trillion won), is about 2.9%.

MS stock is up 776.3% year-to-date.

On this day, the news of the recruitment of former OpenAI CEO Altman, who is known as the "father of ChatGPT," had a big impact on Microsoft's stock price.

Microsoft, which has invested a total of $854 billion (about 5 trillion won) in OpenAI since 32, saw its stock price fluctuate after the OpenAI board announced on the 6th that it had suddenly dismissed Altman.

The concern was that MS could take a hit in the development of AI, which is currently considered the most valuable in the tech industry.

On Friday, the 1th, MS stock fell 57.38% from the previous day.

However, Microsoft CEO Satya Nadella made a comeback on the night of the 2019th, announcing that Altman had joined the company.

Nadella announced on his X Twitter account that Altman will join OpenAI Board Chairman and co-founder Greg Brockman to lead a team of cutting-edge AI research.

Oltmann himself retweeted Nadella's post on his X account, writing, "The mission continues."

On Wall Street, Nadella's strategy in bringing Oltmann into the company was outstanding.

Wedbush Securities analyst Dan Ives said that "Microsoft is now in an even stronger position in AI development."

Researchers at investment firm Macquarie also commented that "Nadella has pulled off a coup d'état of his own, acquiring the most important part of OpenAI: ambitious talent."

Analysts at investment firm Oppenheimer predicted that "this will further increase investment and corporate interest in AI."

(Photo = Provided by Microsoft (MS), Yonhap News)