Semiconductor Stocks Up 55% YTD as AI Boosts Demand

U.S. semiconductor stocks have risen about 55% year-to-date, measured by the MVIS U.S. Listed Semiconductor 25 index, outperforming an equal-dollar benchmark of seven large tech firms by roughly 48 percentage points. Intel and Micron have each gained more than 150% this year, while Nvidia has advanced about 20%.

The MVIS index tracks the 25 largest and most liquid U.S.-listed companies in the semiconductor industry. Market participants say the current quarter is the sector’s strongest since late 2001, and gains continued into the quarter’s midpoint.

Analysts and asset managers attribute the rally mainly to increased corporate spending on artificial intelligence. Firms are buying advanced chips to reduce processing bottlenecks in AI networks and to support AI workloads in data centers. That demand has broadened investor interest beyond vendors traditionally associated with AI chips.

Performance has varied by company and product type. Stocks of memory and processor suppliers have outpaced some GPU-focused names as data-center operators scale purchases of a range of components used in AI systems. The divergence reflects investor interest in suppliers of memory, processors and other data-center components rather than concentration in a handful of large cloud and software platforms.

Horizon Investments’ asset management team, in a commentary, described the surge in demand for AI-capable chips as one of the largest in decades and noted that active managers may be positioned to respond to shifting opportunities as the AI investment cycle develops.

Market observers warn the rally raises questions about valuation, potential supply constraints and the durability of demand once companies complete chip purchases and data centers optimize deployments. Industry indices and firms continue to report strong revenue forecasts tied to AI, while noting the usual risks of sector concentration and changing technology adoption patterns.