U.S. semiconductor stocks surged on Wednesday, driven by a sharp improvement in geopolitical sentiment and growing supply constraints in the CPU market. Intel (INTC) climbed nearly 8% by midday, while Advanced Micro Devices (AMD) gained more than 6%. Arm Holdings (ARM) extended its rally, jumping over 18%, and Nvidia (NVDA) rose more than 3%.
The rally came as reports of a potential U.S.-Iran ceasefire helped ease market concerns over oil prices and broader economic fallout. At the same time, supply-side dynamics in the processor market added upward pressure on chip stocks.
According to Nikkei Asia, AMD and Intel have both notified clients of planned price increases across their CPU lineups, set to take effect between March and April. The hikes stem from a tightening supply of processors, driven by surging demand for agentic artificial intelligence applications in data centers. People familiar with the matter told the outlet that PC makers, including HP (HPQ) and Dell (DELL), began noticing a significant supply gap in late February, with the situation worsening since then.
Arm’s gains followed the company’s announcement on Tuesday of its own data center CPU, a strategic shift after years of licensing its intellectual property to customers such as Apple (AAPL). The move signals Arm’s push deeper into high-margin chip design. Nvidia, meanwhile, showcased its next-generation CPU during its annual GTC conference, further fueling investor interest in the computing segment.
Other semiconductor names also joined the advance, including Qualcomm (QCOM), Texas Instruments (TXN), Analog Devices (ADI), Broadcom (AVGO), and Marvell Technology (MRVL).
In contrast, memory and storage-related names traded lower. Micron Technology (MU), Seagate Technology (STX), Western Digital (WDC), and Sandisk (SNDK) all declined after Google (GOOGL) unveiled a set of new algorithms designed to reduce the memory footprint required to run large language models. The announcement prompted investors to reassess near-term growth expectations for memory demand.
While easing geopolitical tensions provided a near-term tailwind, the broader driver behind the sector’s divergence remains AI-related demand for core computing chips. Arm and Nvidia’s aggressive moves into the CPU market underscore a reshaping competitive landscape. The sell-off in memory stocks, however, highlights a growing divergence within AI hardware plays, with capital increasingly concentrated in companies positioned at the heart of compute-intensive workloads.
