It designs them — or more precisely, it designs the blueprints that other companies use to build processors — and then charges licensing and royalty fees for the privilege. The chips inside Tesla's vehicles, Qualcomm's modem processors, and virtually every Android device on earth all trace their lineage to designs that Arm conceived and licensed. Founded in 1990 as a joint venture in Cambridge, England, Arm earns royalties every time a chip based on its architecture ships — a model that has resulted in more than 280 billion cumulative chip shipments as of 2024. To understand why this model is so powerful, it is worth unpacking exactly what Arm sells and to whom, because the nuances reveal a business architecture that has become increasingly valuable as chip complexity has exploded. Fundamentally, Arm earns money through two complementary streams: licensing fees and royalties. Licensing fees are upfront payments that chip designers — called Arm licensees — pay to gain access to Arm's processor designs, tools, and instruction set architecture. Royalties are ongoing payments, typically calculated as a percentage of the average selling price of each chip shipped, that flow to Arm every time a licensee's chip reaches the market. The first is the traditional architecture license, which allows sophisticated customers — Apple, Qualcomm, Samsung, Amazon — to take Arm's instruction set architecture and design their own custom processor cores from scratch. These licenses command premium upfront fees, sometimes in the hundreds of millions of dollars for the most sophisticated arrangements, and reflect a customer's willingness to invest in differentiation on top of Arm's foundation. The irony is, the second flavor is the processor license, which gives customers access to Arm's pre-designed processor cores — products like the Cortex-A series for application processors, the Cortex-M series for microcontrollers, and the Cortex-R series for real-time systems. These licensees take Arm's ready-made designs and integrate them into their custom system-on-chip (SoC) designs without doing the underlying processor design work themselves. Introduced in 2019 and expanded subsequently, these subscription-style programs give licensees broad access to Arm's entire portfolio of intellectual property — processor cores, interconnects, security features, graphics IP, and more — for a recurring annual fee plus usage-based components. This model mirrors the shift to software-as-a-service pricing that transformed enterprise software, and it has allowed Arm to deepen its relationships with customers who previously licensed only discrete products. Arm has been aggressively converting its customer base to these subscription models, which management believes will increase the average revenue per licensee and create more predictable revenue streams. When Arm licenses its architecture to a company like Qualcomm or MediaTek, every chip that company ships creates a royalty obligation. Arm's royalty rate varies by product category, typically ranging from roughly 1% to 2% of chip average selling price, though the exact terms are confidential to each license agreement. The strategic implication of this royalty structure is that Arm benefits disproportionately as the chips using its architecture become more complex and more expensive. The shift from $5 microcontrollers to $50 smartphone application processors to $500 server chips means that even a flat royalty rate percentage generates dramatically more revenue per chip. This is one reason management has highlighted its growing presence in data center and AI chips as a far-reaching revenue opportunity: an Arm-based server chip for AI inference might carry an ASP of $300 to $500, generating multiples more royalty revenue than the smartphone chips that have historically dominated Arm's royalty base. For Arm, the data center opportunity is transformational precisely because of the royalty arithmetic. A premium smartphone chip might carry an average selling price of $50 to $80, generating perhaps $0.50 to $1.00 in Arm royalties. Even at similar royalty rate percentages, the revenue per chip is an order of magnitude higher. As Arm's data center chip royalty base grows, it could fundamentally reshape the company's revenue trajectory. RISC-V's fundamental advantage is its zero-cost licensing: any company can implement a RISC-V processor without paying royalties to any third party. Rather than dismissing the open-source architecture, Arm has accelerated its own IP portfolio development, introduced the flexible subscription licensing models that reduce the cost-of-entry friction that drove some customers to consider RISC-V, and made strategic arguments about total cost of ownership that account for network development costs. Arm Holdings' financial profile is that of a high-margin, capital-light intellectual property business navigating a transition from a mature smartphone-centric royalty base toward higher-value computing markets. The most immediate commercial challenge is the highly concentrated nature of Arm's royalty revenue. Apple alone accounts for an estimated 20% to 25% of Arm's total royalties, a dependency that management has acknowledged publicly. More realistically, the risk is that Apple, Qualcomm, and other large licensees negotiate increasingly aggressive royalty rate reductions during contract renewals, using their scale as negotiating use. The most consequential legal battle Arm faces involves Qualcomm, its largest licensee in the smartphone market. Arm subsequently sued Qualcomm in 2022, arguing that Nuvia's architecture license with Arm did not transfer to Qualcomm through the acquisition and that Qualcomm's use of Nuvia-derived designs in its Snapdragon X Elite processors violates Arm's licensing terms. The case went to trial in late 2024, with a jury finding in Qualcomm's favor on the specific question of whether the license transferred. The financial stakes are enormous: a ruling that Qualcomm must pay higher royalties or obtain a new license on Arm's terms could generate hundreds of millions in additional annual revenue for Arm, while an unfavorable resolution could embolden other licensees to seek more aggressive terms. The rise of RISC-V, an open-source instruction set architecture that any company can use and modify without paying licensing fees to Arm, represents a structural competitive threat that has gained meaningful traction over the past five years. If RISC-V's software network matures sufficiently to challenge Arm in mainstream computing applications, Arm's pricing power and royalty base could face sustained pressure. Each new design win at a hyperscaler represents not just a one-time licensing fee but a multi-year royalty stream from hundreds of thousands of chips deployed in production infrastructure. The conversion of Arm's customer base to subscription-style Total Access and Flexible Access licensing programs represents the primary mechanism for increasing average revenue per licensee. Under traditional per-product licensing, a customer pays a relatively modest upfront fee and then owes royalties only on shipped chips. Under the subscription models, customers pay higher recurring fees but gain access to Arm's entire portfolio, creating incentives for more experimental chip designs and deeper architectural engagement. Management has indicated that subscription model customers generate meaningfully higher lifetime revenue than traditional licensees. As these chips become more expensive and more numerous, Arm's royalty revenue per chip increases substantially. If successful, this platform approach would allow Arm to capture a larger share of the value created in each chip design and increase average revenue per licensee. It would design processor IP and collect royalties from the companies that did.