*Nvidia Reels After DeepSeek’s A.I. Breakthrough | NY Times* - Nvidia shares dropped 17%, losing $600 billion in market value—its worst trading day since March 2020. - DeepSeek trained a cutting-edge A.I. system with far fewer Nvidia chips than OpenAI's ChatGPT required. - Nvidia controls 90% of the A.I. chip market; revenue jumped 200% in two years to $126 billion. - Nvidia’s total valuation surged 700% to $3.62 trillion in November 2024. - DeepSeek's success challenges the industry’s reliance on expensive Nvidia chips for A.I. development. - Apple regained top valuation, but struggles with its own A.I. system, Apple Intelligence. https://www.nytimes.com/2025/01/27/business/deepseek-nvidia-ai-chips.html