In a striking move from the "Oracle of Omaha," who famously avoids investing in technology he doesn't understand, Berkshire Hathaway has built a complete AI industry bet through three tech giants, according to SEC 13F filings. Apple anchors the on-device large language model deployment scenario, Alphabet drives the dual engines of search and cloud computing, and Amazon Web Services provides the world’s largest AI computing infrastructure. Notably, these three companies collectively invested over $80 billion in R&D in 2023, accounting for 27% of global AI-related spending among tech enterprises.\n\nOn the hardware front, despite a slight reduction in his Apple stake, Buffett is eyeing the upcoming on-device AI assistant Siri as a pivotal element to reshape the iOS ecosystem.
Morgan Stanley research notes that Apple’s in-house chip NPU has reached 20 TOPS of computing power, laying the groundwork for deploying large models on mobile devices. Meanwhile, Berkshire’s newly acquired 17.8 million shares of Alphabet—whose TPU v5 chip cluster powers the training and iteration of the Gemini LLM—have helped the company’s cloud AI computing market share jump 5 percentage points year-over-year to 34%.\n\nAmazon AWS’s competitive edge lies in its full-stack AI service capability. Its Bedrock platform has integrated major LLMs including Llama and Claude, and the latest earnings report shows AI service revenue surged 78% quarter-over-quarter. Notably, all three target companies possess a closed-loop capability combining “compute + algorithms + data.” This infrastructure-level moat is likely the core factor attracting Buffett.