Driven by the surge in global demand for AI computing power, Arm's total market value exceeded the US$300 billion mark for the first time. May 21,Arm's stock price closed up 16.16%, continuing to hit a record high, with a market value of US$317.3 billion.On the previous trading day, the stock had surged 15.05% to close at $256.73, having hit a record high of $259.44 during the session.

This milestone enables major shareholders SoftBank and Masayoshi Son to usher in the most rewarding investment myth. According to estimates, SoftBank holds approximately 87% of Arm’s shares at a cost of approximately US$40 billion.The current book profit exceeds US$220 billion, with a return rate of 550%.

At the same time, SoftBank’s Japanese shares rose 13.75% today. On the news, OpenAI, in which SoftBank holds more than 10% of the shares, has announced plans to go public in the United States. SB Energy, the digital infrastructure company it invests in, also stated that it will secretly submit a registration statement.

Bernstein gives Arm an "outperform" rating

The catalyst for Arm's rise came from Bernstein's latest report. The agency gave Arm an "outperform" rating and a target price of $300, which represents about 16.8% upside potential from the current stock price.Bernstein believes that Arm is not only a beneficiary of chip design in the AI ​​wave, but will also structurally dominate the next era of computing.

Bernstein’s core judgment revolves around the rise of agent AI. As the industry shifts from conversational chatbots to AI agents that can perform multi-step tasks autonomously, central processing units are returning to the center of the technology stage.With its energy efficiency advantage, Arm is expected to quadruple its CPU market share in the next four years, corresponding to an accessible market of US$137 billion. Bernstein expects Arm's profits to grow fivefold by 2030.

This optimistic expectation is based on solid financial data. Arm's net profit in the most recent quarter increased by 49% year-on-year to US$313 million, and revenue increased by 20% to US$1.49 billion, showing that the demand for its chip architecture continues to expand in various fields from mobile terminals to cloud computing.