AI Boom Fuels Arm's Q4 Surge as Data Center Demand Soars

Arm Holdings plc reported a 20% year-over-year increase in revenue to $1.49 billion for its fiscal 2026 fourth quarter ended March 31, topping analysts’ expectations of $1.47 billion. Non-GAAP earnings per share rose 9% to 60 cents, ahead of the 58 cents anticipated.

Despite the beat, Arm shares fell about 6% in asourceser-hours trading on Wednesday, May 6, asourceser a strong rally ahead of the results.

Data center CPUs gain momentum

Arm said results were supported by strong demand in the data center CPU market, as artificial intelligence workloads evolve. The industry’s focus has been shisourcesing from AI training toward inference and “agent-driven” tasks, increasing the need for central processing units (CPUs) alongside graphics processing units (GPUs).

AMD and Intel have pointed to similar trends. AMD has projected the CPU server total addressable market could exceed $120 billion by 2030, growing at more than 35% annually.

Hyperscaler adoption and in-house development

Arm-based CPUs account for more than 50% market share among top hyperscalers, the company said. It also noted that major AI accelerator providers pair their chips with Arm-based processors, including Nvidia (Rubin GPUs with Vera CPUs), Google (Tensor Processing Units with Axion CPUs), and Amazon (Trainium with Graviton chips).

Arm has also begun developing its own in-house data center CPU designed for agentic AI workloads. The company said customer interest has been strong, with projected demand now exceeding $2 billion for fiscal years 2027 and 2028, up from an initial $1 billion forecast.

Arm added that supply chain capacity constraints could limit how quickly the company can meet the higher level of demand.