The British designer's move into manufacturing marks a decisive break with a model that made it one of technology's most valuable companies
For three decades, Arm Holdings PLC (NASDAQ:ARM) built one of the most profitable businesses in technology without making a single chip.
Its model was elegant in its simplicity: design the underlying architecture that others build upon, collect royalties, and let the likes of Apple, Qualcomm and Nvidia take the manufacturing risk.
That model made Arm indispensable and, when the company listed in New York in 2023, valued it at more than $50 billion.
Now Arm is tearing it up.
The announcement of the Arm AGI CPU, a full server chip aimed squarely at the artificial intelligence infrastructure market, represents a fundamental bet that the royalty model alone cannot capture the value being created by the AI boom.
The logic is not hard to follow.
As hyperscalers pour hundreds of billions of dollars into data centre construction, the companies supplying the actual chips, rather than the underlying designs, are capturing an outsized share of that spending.
Nvidia's market capitalisation has at times exceeded $3 trillion on the back of AI chip demand.
Arm, by contrast, earns a relatively modest royalty on each chip sold, regardless of the selling price.
By manufacturing its own silicon, with Meta and OpenAI as launch partners, Arm is signalling that it believes it can compete for a larger slice of that spending directly.
Citi, which rates Arm a buy, argues the stock is attractively valued given the scale of the opportunity, noting that shares trade at around 40 times the company's targeted 2028 earnings per share of more than $3, a multiple in line with the 40% compound annual earnings growth rate the company is targeting through 2031.
The bank described the announcement as the most significant shift in the company's history, adding that the extent of the launch surprised positively even by the standards of the most bullish scenarios, with revenue targets of $25 billion and earnings per share of $9 by 2031 exceeding prior forecasts.
The risk is considerable.
Arm's existing customers, the chipmakers who pay it royalties, now face the prospect of competing with their own supplier.
That tension is not unprecedented in technology, where platform owners periodically move into adjacent markets, but it rarely passes without friction.
Apple's decision to design its own processors using Arm architecture reduced its dependence on third-party chipmakers while continuing to pay Arm's fees.
The relationship between Arm and its licensees may now face a more pointed stress test.
At current prices, the financial targets Arm has set demand flawless execution, and whether the company can deliver depends on factors it does not fully control, including the pace of AI infrastructure investment, competition from established chip manufacturers and the loyalty of its existing licensing partners.
What is clear is that the company's founder-era caution has given way to something altogether more aggressive.
The age of Arm as a toll-collector on the semiconductor industry appears to be over.