Semiconductor stocks dropped 3-4% on February 26, 2026, despite strong quarterly earnings from Nvidia, as investors priced in cost impacts from new 10% global tariffs implemented February 23. AMD fell 3%, while Applied Materials, ASML, and Broadcom each declined 4%.
The tariffs hit a sector dependent on international supply chains. TSMC manufactures chips in Taiwan, ASML produces lithography equipment in Netherlands, Applied Materials sources components globally, and final assembly often occurs in Malaysia or Vietnam before US distribution.
Nvidia reported Q4 revenue of $22.1 billion on February 26, beating analyst estimates by $800 million. The stock typically rallies 5-8% on strong earnings, but closed down 1.2% as traders calculated tariff exposure. The company's H100 and upcoming B100 AI accelerators require components from 14 countries.
AI chip production timelines face disruption. Semiconductor Manufacturing International Corporation (SMIC) and Samsung already operate at 95% capacity for advanced nodes below 7nm. Adding 10% tariff costs forces customers to recalculate orders, delaying procurement decisions by 6-8 weeks according to supply chain analysts at TechInsights.
Import costs will appear in Q1 2026 earnings calls starting April. Applied Materials CEO Gary Dickerson told investors February 26 the company is "evaluating pricing adjustments" for equipment sold to US customers. ASML's EUV lithography systems cost $150-200 million each; a 10% tariff adds $15-20 million per unit.
Cloud providers face budget pressure. Amazon Web Services, Microsoft Azure, and Google Cloud collectively ordered $120 billion in AI chips for 2026. The tariffs add $12 billion in costs, forcing tradeoffs between chip quantities, deployment timelines, or customer pricing.
Alternative sourcing offers limited relief. Intel's US fabs produce older nodes unsuitable for frontier AI chips. GlobalFoundries maxes at 12nm process technology versus 3nm required for competitive performance per watt in data center AI accelerators.
Semiconductor sector correlation to tariff announcements shows 0.72 confidence in analysis tracking February 23-26 price action. The sector underperformed S&P 500 by 4.2 percentage points despite representing 8% of index weighting, indicating concentrated selling pressure beyond general market sentiment.