U.S. equities tumbled Thursday as artificial intelligence stocks absorbed heavy selling pressure. The Nasdaq Composite fell sharply, dragged down by a broad retreat from semiconductor and AI infrastructure names. Nvidia shares plunged 16 percent, marking one of the largest single-day declines for the chip giant in recent memory.
The selloff stems from China's DeepSeek, which released a new large language model that challenged the prevailing assumption that expensive, advanced chips are essential for training competitive AI systems. DeepSeek's model reportedly achieved performance comparable to leading Western alternatives while using significantly cheaper hardware and computational resources. The revelation rattled investors who have bid up AI infrastructure stocks on the premise that demand for high-end processors would remain insatiable.
Nvidia's crash rippled across the semiconductor and cloud computing sectors. Other chipmakers and companies dependent on selling advanced processors to AI firms posted double-digit percentage losses. The rout suggested market participants are reassessing the economics of the AI buildout, with particular concern focused on whether the explosive capex cycle supporting AI infrastructure remains justified at current valuations.
The decline reflects a fundamental shift in investor sentiment around AI monetization timelines and competitive dynamics. DeepSeek's efficiency gains underscore that cheaper alternatives to Nvidia's processors and proprietary architectures may prove viable for many applications, potentially compressing margins across the AI supply chain. This challenges the bull case that has driven semiconductor stocks higher throughout 2024.
The Nasdaq's weakness on Thursday indicates broad-based damage to growth and tech stocks, sectors that have dominated market performance. Nasdaq 100 heavyweights tied to AI infrastructure, cloud services, and semiconductors all retreated meaningfully. Market breadth deteriorated as investors rotated away from the tech concentration that characterized recent gains.
Treasury yields likely moved in response to the equity rout, as flight-to-safety demand typically accelerates during tech selloffs. The VIX volatility index probably spiked, reflecting heightened uncertainty around AI spending and semiconductor demand forecasts going forward.
Nvidia's 16 percent drop sets the tone for AI hardware valuations. Watch semiconductor stock performance and the Nasdaq 100 for signals about whether this correction is a temporary consolidation or the start of a deeper reassessment of AI infrastructure valuations. Commentary from chip executives on capex expectations will carry outsized weight at upcoming earnings calls.