Investopediaยท2025-10-08 20:47Group 1: AI and Technology Sector - Advanced Micro Devices (AMD) shares surged nearly 12% following a partnership announcement with OpenAI, leading to analysts raising their price targets and Jefferies upgrading its rating to "buy" from "hold" [4] - Dell Technologies (DELL) shares increased by 9.1% after the company raised its outlook due to strong demand for AI infrastructure, with CEO Michael Dell highlighting the company's capability to support AI deployment [4] - Nvidia (NVDA) shares rose about 2% as CEO Jensen Huang reported a substantial increase in AI demand this year, with expectations for continued growth [5] Group 2: Credit Score Industry - Equifax (EFX) announced it would provide its VantageScore 4.0 credit scores at reduced prices or for free, responding to Fair Isaac's (FICO) recent move to offer its credit scores directly to firms, which negatively impacted FICO's stock [6] - Fair Isaac shares dropped nearly 10%, marking the largest decline among S&P 500 stocks, reversing some gains from the previous week [6] Group 3: Market Overview - The S&P 500 rose 0.6% and the Nasdaq climbed 1.1% to set new closing highs, driven by gains in the tech sector and indications from the Federal Reserve about potential interest-rate cuts [3] - Live Nation (LYV) shares fell 3.4% after announcing a plan to offer $1.3 billion in convertible senior notes, intended for debt repayment and general corporate purposes [7]