The Strange Reason for Arm’s Stock Drop: The Market May Be Punishing It Unfairly

The Strange Reason for Arm’s Stock Drop: The Market May Be Punishing It Unfairly

• ARM
• SPCX

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Arm Holdings (ARM) stock dropped nearly 10% in one day, one of the sharpest falls in the chip space on Sept. 14. The reason was the same AI selloff that hit the whole sector. The selloff started with an essay from Anthropic CEO Dario Amodei arguing that AI development should slow down. Amodei argued the technology is advancing quicker than humans' ability to control it. The weight of this statement increased further when SpaceX (SPCX) CEO Elon Musk and OpenAI CEO Sam Altman agreed soon after. Investors read that as a threat to AI spending and sold off stocks tied to the theme. Arm was treated as a prime AI name and punished accordingly.

The problem with that reaction is that Arm isn't really an AI company yet — at least not in terms of where its money comes from. Arm licenses its chip designs and earns a royalty on nearly every chip that ships using them. A large share of that still comes from smartphones. Mobile processors are Arm's single-biggest source of royalties, coming in at about 43% in fiscal 2026. No other market comes close. The company's own AI chip, the AGI CPU, is still early in its commercialization and won't become a meaningful revenue contributor until fiscal 2028.

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This is what the recent selloff ignored. When Arm trimmed its royalty outlook in July, the reason had nothing to do with AI. CFO Jason Child pointed to weak smartphone demand caused by higher memory prices. So, the real pressure on Arm right now is coming from phones, not from any AI slowdown. The market sold ARM stock on a fear that barely touches how the company actually earns today.

About Arm Holdings

Arm Holdings develops and licenses the technology that powers many of the world's computer chips. The company provides a product portfolio, including CPU, IP, GPU, and neural processing unit accelerators. Arm serves semiconductor companies, original equipment manufacturers (OEMs), cloud service providers, and organizations developing chips. Its designs are used in processors for smartphones, PCs, data centers, networking equipment, automotive, and robotics. Founded in 1990, the company is headquartered in Cambridge, United Kingdom.

Although ARM stock has performed well over the past year, it has slightly lagged the broader semiconductor sector. The stock has returned about 59% in the past 52 weeks, while the iShares Semiconductor ETF (SOXX) has returned about 94% during the same period. However, Arm's momentum has accelerated sharply this year. ARM stock has surged 123% year-to-date (YTD), significantly outperforming SOXX's return of about 67% over the same period.

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