Group 1: Semiconductor Industry - Wells Fargo upgraded semiconductor stocks with AMD as the top pick, highlighting AMD's 90% gains in 2025 compared to Nvidia's 37% [1] - AMD's stock rose 6.5% this week to $223.60, with earnings expected on February 3rd, projecting $1.33 EPS on $9.7 billion revenue [1] - TSMC reported Q4 revenue of $33.73 billion and EPS of $19.50, beating estimates by 9%, with gross margins at 62.3% [3] - TSMC's advanced nodes (7nm and below) now account for 77% of wafer revenue, indicating strong demand for cutting-edge technology [3] - Nvidia's stock dropped 3.2% to $183.14 amid potential restrictions from China on AI chip purchases, despite strong earnings performance [2] Group 2: AI Infrastructure and Related Companies - Amazon's deal with Rio Tinto for copper supply highlights the physical infrastructure demands of AI, as data centers require significant electrical capacity [4] - Microsoft invested nearly $500 million in Anthropic, reinforcing its position in AI infrastructure, with a stock price of $459.38 [6] - Meta is pivoting away from the Metaverse to focus on AI, leading to a 5.1% drop in stock price to $615.52, indicating a strategic shift [5] - The software sector faces challenges from AI, with Salesforce's stock dropping 10% to $239.57 due to concerns about AI potentially replacing traditional workflows [7]