美股三大指数小幅高开，英伟达涨超2%

Market Overview - US stock indices opened slightly higher, with the Dow Jones up 0.31%, S&P 500 up 0.39%, and Nasdaq up 0.51% [1] - Nvidia opened with a gain of over 2%, Oracle's stock rose over 6% after Deutsche Bank analyst Brad Zelnick maintained a buy rating and raised the target price from $335 to $375 [1] - Dell's stock increased by 6.2%, marking its largest gain in a month [1] Company News - Nvidia addressed concerns regarding its AI chip dominance, stating it remains a generation ahead of the industry and continues to supply Google [2] - Nvidia emphasized its platform's superior performance and versatility compared to Google's custom-designed TPU [2] - OpenAI projected that ChatGPT's paid user base will exceed 220 million within five years, with annual subscription revenue nearing $200 billion [3] - Elon Musk announced that Tesla's Robotaxi fleet in Austin, Texas, is expected to double in size next month [4] - Panasonic Energy will supply lithium-ion batteries to Amazon's autonomous taxi company Zoox starting in 2026 under a long-term agreement [5] - Novo Nordisk's Kyinsu, the world's first weekly formulation of basal insulin and GLP-1 receptor agonist, received EU approval for adult type 2 diabetes patients [6]