Nvidia(US:NVDA) SINOLINK SECURITIES·2025-12-28 05:35Investment Rating - The report suggests focusing on sectors driven by domestic AI development such as servers and IDC, as well as sectors like servers and optical modules driven by overseas AI development [4] Core Insights - Nvidia has strategically integrated Groq and restructured its cloud service team, aiming to enhance its AI inference chip capabilities and optimize long-term competitiveness [1][2] - Samsung and SK Hynix have raised HBM3E prices by nearly 20% for next year, attributed to increased orders from AI accelerator companies [1] - OpenAI's computing profit margin has surged to 70%, with discussions underway regarding an advertising business model [1][2] - ByteDance plans to invest 160 billion RMB (approximately 23 billion USD) in capital expenditures next year, with a significant portion allocated to AI processors [1][2] Summary by Sections Server Sector - The server index increased by 3.00% this week, while it has decreased by 3.36% this month. OpenAI's computing profit margin has reached 70%, indicating a potential rise in server demand due to the commercialization of AI [2][6] Optical Module Sector - The optical module index rose by 5.17% this week and 20.27% this month. Nvidia's agreement with Groq is expected to strengthen its position in high-efficiency inference technology [2][6] IDC Sector - The IDC index increased by 3.73% this week and 4.48% this month. ByteDance's planned capital expenditure and the significant growth in daily active users for its product Doubao suggest a positive outlook for the domestic supply chain [2][7]