Hua Er Jie Jian Wen·2026-02-06 16:01Group 1 - The market is experiencing significant volatility in the tech sector due to concerns over the return on capital investments in artificial intelligence (AI), with major companies like Microsoft, Nvidia, Amazon, Alphabet, Meta, and Oracle losing a total of approximately $1.35 trillion in market value [1] - Global tech giants are projected to invest around $660 billion in AI-related infrastructure this year, surpassing the GDP of several medium-sized economies, raising investor concerns about potential inefficiencies and overcapacity risks [1] - The sentiment in the market is shifting from a fear of missing out on the AI wave to a focus on evaluating the efficiency of capital expenditures, as highlighted by GAM Investments' Paul Markham [1] Group 2 - Amazon has announced an aggressive capital expenditure plan of $200 billion, representing a 56% year-over-year increase, which is the highest among major cloud service providers, but has raised investor concerns about short-term return visibility [4] - In contrast to Amazon, Apple has adopted a more cautious approach to AI capital spending, which has been positively received by the market, with its stock price increasing by 7% due to strong demand for the iPhone [4] - The market is undergoing a systematic reassessment of high capital expenditure models, with expectations that stock prices of related companies will continue to experience volatility and pressure as doubts about the sustainability and return paths of AI investments deepen [5]