AI Connectivity Meets Chip Architecture: Astera Labs and Arm Draw Investor Attention

Two distinct approaches to the artificial intelligence buildout are drawing interest as the infrastructure cycle matures: Astera Labs (NASDAQ:ALAB), which supplies the connectivity hardware that links AI chips together, and Arm Holdings (NASDAQ:ARM), whose architecture licenses underpin the design of many of those chips.

The two companies occupy different layers of the AI stack. Astera Labs produces semiconductor-based connectivity solutions — including PCIe and CXL technologies — that help hyperscalers and AI accelerator vendors move data at scale inside data centers. Arm, by contrast, develops and licenses CPU and GPU intellectual property, along with compute subsystems and associated software tools, giving it broad reach across the broader chip ecosystem rather than direct hardware sales.

Recent trading reflected steady demand for both names. Astera Labs shares rose 2.96% to close at $298.69, up from a previous close of $290.10, giving the company a market capitalization of roughly $57.38 billion. Arm gained 1.27% to $268.58, from $265.20 previously, for a market cap of approximately $255.99 billion — meaning Arm’s valuation is more than four times that of Astera Labs.

That scale differential underscores the contrast in business models. Astera Labs is a faster-scaling but more concentrated play on AI data center traffic, while Arm’s licensing model spans a much wider universe of computing devices and chip designers.

One notable risk factor for Astera Labs is customer concentration. In 2025, a single end customer accounted for more than 70% of the company’s revenue — a dependence that exposes the connectivity vendor to the purchasing decisions of just a handful of large cloud and AI customers.

What to watch

• Upcoming quarterly earnings from both companies, including Astera Labs revenue concentration disclosures and Arm’s licensing royalty trends.
• Hyperscaler capital expenditure plans, which drive demand for AI data center connectivity hardware.
• Product announcements around next-generation PCIe and CXL connectivity standards from Astera Labs.
• Arm’s progress in compute subsystems and expansion beyond traditional CPU licensing.
• Any shifts in AI accelerator vendor roadmaps that could affect demand for either company’s offerings.

Source: original release