Arm Holdings has broken from two decades of operating purely as a chip-design licensor, unveiling a proprietary AI data-centre processor it is calling the AGI CPU and projecting the product could add approximately $15 billion in annual revenue within five years.

The announcement, which Arm framed as the silicon foundation for an agentic AI cloud era, represents the most consequential strategic pivot in the company's history as a public company. Analysts described it as the most significant shift the company has made, a characterisation that resonated with the market: the stock surged between 15% and 20% on the day of the announcement depending on the session, one of its largest single-day moves.

Meta has already signed on as a development partner, agreeing to collaborate with Arm on a new class of data-centre silicon built around the new CPU. The partnership lends early commercial credibility to what is otherwise an ambitious multi-year revenue forecast.

The strategic logic is straightforward. Arm's licensing model earns royalties on chips designed by third parties using its instruction-set architecture. By building and selling its own silicon, the company captures a far greater share of the value chain, though it also takes on the capital intensity and execution risk that come with chip manufacturing. Nvidia, whose GPU dominance in AI infrastructure has been unchallenged, was described by Barron's as unlikely to face a direct competitive threat from Arm's CPU, which targets a different workload profile.

Arm's shares were already under pressure this year amid broader technology sector volatility before the announcement provided a significant catalyst. The $15 billion revenue target, if achieved, would dwarf current annual revenues and reprice the stock on a fundamentally different earnings trajectory.