Arm Stock Slides After HSBC Downgrades to 'Hold' on Stretched Valuation

Arm Holdings (NASDAQ: ARM) shares fell sharply on Tuesday after HSBC downgraded the stock to “Hold” from “Buy,” with the bank’s analysts arguing that the chip designer’s recent rally has fully priced in its long-term growth potential from artificial intelligence.

Valuation Outpaces Fundamentals

In a note to clients, HSBC stated that Arm's valuation has surged ahead of its fundamental outlook. The brokerage highlighted that the company's stock has climbed 122% since its "Arm Everywhere" event in March, significantly outperforming the 57% gain in the Philadelphia Semiconductor Index during the same period.

HSBC attributed the rally to investor enthusiasm for Arm's expansion into server CPUs for AI data centers. However, the bank believes this rapid appreciation already discounts robust long-term earnings growth, leaving limited room for further upside.

Price Target and Near-Term Constraints

Despite the downgrade, HSBC raised its price target on Arm to $315 from $255, reflecting a valuation model rolled forward to fiscal 2029 estimates. The new target, however, implies only about 5% upside from Arm's July 13 closing price, according to the note.

Ad

The bank also pointed to near-term headwinds, specifically the limited 3-nanometer foundry capacity at TSMC, which is constraining shipments of Arm’s AI server CPUs. HSBC analysts do not expect meaningful capacity additions until the second half of 2027 and believe TSMC is likely to prioritize its existing customers for new production allocations.

Market Reaction

Following the downgrade, Arm shares closed down 6% at $281.17 in Tuesday's trading. The stock edged slightly higher by 0.4% in after-hours activity.

HSBC noted that Arm trades at a high multiple, estimating it at 139 times fiscal 2027 earnings. The bank argues this valuation already reflects the company's ambitious long-term roadmap, which targets $25 billion in revenue and $9 in non-GAAP earnings per share by fiscal 2031.