Summary: A comprehensive overview of the AI industry chain in US stock markets, from upstream AI chips and computing infrastructure, through midstream large models and cloud services, to downstream industry applications, analyzing investment logic and representative companies.
Artificial intelligence is undergoing the most profound technological revolution since the birth of the internet, and the US stock market is both the biggest beneficiary and enabler. Since 2023, AI-themed stocks led by NVIDIA have powered a strong rally in US equities.
Upstream: AI Chips and Computing Infrastructure
NVIDIA, with its GPU monopoly in the AI training market (over 80% market share), saw its market cap skyrocket from approximately $360 billion in early 2023 to over $3 trillion. Its H100 and upcoming Blackwell architecture GPUs are the core engines of AI computing power. AMD and Intel are accelerating their catch-up efforts, while Broadcom and Marvell hold important positions in custom AI chips (ASICs). Additionally, data center REITs like Equinix and Digital Realty continue to benefit from AI-driven computing demand.
Midstream: Large Models and Cloud Platforms
Microsoft, through its investment in OpenAI and deep integration of GPT models into Azure cloud services and Office products, has become one of the most successful tech giants in AI commercialization. Google (Alphabet) has built a complete AI ecosystem with its Gemini model and self-developed TPU chips. Amazon AWS, Meta, and Apple are also actively laying out their respective AI strategies. Cloud infrastructure has become the key vehicle for AI deployment, with AI-related revenues growing rapidly across the three major cloud providers (AWS, Azure, Google Cloud).
Downstream: Industry Applications and Investment Opportunities
AI applications are penetrating finance (robo-advisory, risk control), healthcare (drug discovery, medical imaging), autonomous driving (Tesla FSD), enterprise services (Salesforce, ServiceNow), and more. Palantir, C3.ai, and other AI software companies are also drawing high market attention. Investors should focus on companies with high "AI content" while being wary of pure concept speculation plays. In the long run, AI will become infrastructure across all industries much like the internet, and companies with data and scenario advantages will ultimately prevail.
