Arm Holdings Surges 17% Amid Broad Semiconductor Rally on AI Demand

Shares of British semiconductor designer Arm Holdings (NASDAQ:ARM) jumped 17.16% on Thursday, leading a widespread rally across the chip sector. The surge followed reports of intense demand for computing power from new artificial intelligence systems, fueling investor expectations for an infrastructure "supercycle."

Semiconductor Sector Rallies

The optimism lifted major semiconductor stocks, significantly outpacing the broader market, which saw the S&P 500 gain 1.49%. According to a report from Investing.com, the rally was spurred by news of massive CPU power requirements for autonomous AI agents.

Key movers in the sector included:

• Intel (NASDAQ:INTC): +12.14%
• AMD (NASDAQ:AMD): +9.95%
• Qualcomm (NASDAQ:QCOM): +9.29%

Arm's Momentum

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Arm's single-day gain extended its month-to-date performance to +37.51% for September. Investor sentiment was reportedly bolstered by comments from CEO Rene Haas, who flagged “off the charts” demand from key growth markets, including data centers, automotive robotics, and edge computing.

Haas also expressed confidence that Arm will exceed its $2 billion revenue target for its new AGI CPU business, which is designed for agentic AI workloads. The company recently reported strong full-year results, with revenue rising 22.8% year-over-year to $4.92 billion and profit growth of 27%.

Market Context

The rally reflects a growing conviction among investors that the next wave of AI development will require a significant build-out of specialized computing hardware. Arm, whose architecture is central to many chip designs, is seen as a key beneficiary of this trend.

Analysts have also taken note of the company's trajectory. Wells Fargo and Mizuho have set price targets of $410 and $425, respectively, for Arm's stock, citing a potential path to $25 billion in revenue and over $9 in earnings per share by 2031, according to the Investing.com report.