'iPhone chip designer?' Arm Holdings reinvents itself as an AI powerhouse

The iPhone and the Galaxy — two devices billions of people hold in their hands every day — share a quiet common thread: both are built on blueprints drawn up by a single British company. That company is Arm Holdings.

When most people think of a semiconductor company, they picture factories like those run by Samsung Electronics or TSMC. Arm is different. It has no factories and makes no chips. What Arm sells is the blueprint itself.

Wall Street has started looking at this "blueprint company" in a new light. Arm Holdings has emerged as a prime beneficiary of the AI investment boom, with its share price surging 171 percent over the three months through Thursday. South Korean retail investors net purchased $265.57 million worth of its shares over the past month.

Arm Holdings is a semiconductor intellectual property company headquartered in Cambridge, England. It neither manufactures nor sells chips directly. Instead, it develops IP that serves as the design blueprint for semiconductors and licenses that IP to customers. Each time a customer ships a chip based on Arm's designs, Arm collects a royalty — a business model considered radical when the company first established it.

Its revenue breaks down into two streams: license fees paid by customers when they adopt an Arm design, and royalties collected each time a chip built on that design ships to market. With no manufacturing plants to maintain, the model converts revenue growth almost directly into profit, making it a high-margin business.

The strategy quickly proved its worth. The Nokia 6110, powered by Arm's low-power processor, became a global hit, vaulting Arm to the center of the mobile chip market almost overnight. Riding the mobile revolution, Arm listed simultaneously on the London Stock Exchange and Nasdaq in 1998.

The smartphone revolution only deepened Arm's reach. Apple's launch of the iPhone in 2007 ushered in the modern smartphone era, and with it came near-universal adoption of Arm architecture — Apple's A-series chips, Qualcomm's Snapdragon and Samsung's Exynos processors all run on Arm-based designs. Today, Arm commands more than 99 percent of the global mobile application processor market, a position that amounts to an effective monopoly.

For years, the equation "Arm equals mobile" held firm. The AI infrastructure boom is rapidly upending it. Wall Street's renewed interest in Arm has little to do with smartphones; it stems from a fundamental evolution in how the company makes money.

High-performance central processing units that control graphics processors and direct AI computation are also designed on Arm-based architecture. As AI data centers multiply, demand for Arm technology scales up in direct proportion.

"Data centers will need more than four times the CPU capacity they have today, driven by AI agents," said Ko Min-seong, an analyst at NH Investment & Securities. "Factoring in higher shipment volumes, rising core counts and the resulting increase in average selling prices, Arm could be looking at a data center CPU market opportunity exceeding $100 billion by 2030."

In step with the AI era, Arm recently announced it would sell its own internally designed chips for the first time in its history. In March, it unveiled the AGI CPU, a chip built exclusively for AI data centers. The chip delivers twice the performance of existing x86 products and is manufactured on TSMC's cutting-edge 3-nanometer process.

Arm said it has already secured more than $2 billion in revenue from the chip business alone for the two years following its commercial launch in the second half of 2026. The company also set a long-term target of $15 billion in chip-related sales by fiscal year 2031.

As Arm's business model evolves from selling blueprints to selling finished chips, the company is increasingly seen as a direct beneficiary of AI infrastructure spending.

Revenue for the fourth quarter of fiscal year 2026 (January–March) rose 20 percent year-on-year to $1.49 billion, with earnings per share of 60 cents — both beating market expectations. License revenue came in at $819 million, topping the consensus estimate of $775.6 million.

"Data center royalty revenue more than doubled year-on-year and is expected to overtake mobile to become the single largest revenue source going forward," said Heo Seong-gyu, an analyst at Shinhan Investment & Securities. The projection underscores the company's shift from the maker of smartphone processors to an AI company.

Wall Street has begun betting on Arm's growth story. On June 17, Bernstein raised its price target from $300 to $500, citing expectations that Arm will continue expanding its share of the server CPU market through 2030 and sustain strong revenue growth.

Valuation, however, is a risk investors should watch closely. Arm's price-to-earnings ratio currently exceeds 490 times — a sign that expectations for future growth are priced in to an extreme degree.

The prospect of share sales by majority owner SoftBank Group also looms as an overhang. As Arm's largest shareholder, SoftBank could move to sell a large block of shares at any time for liquidity or other reasons, a potential supply overhang that investors cannot ignore.