Stock market today: Dow, S&P 500, Nasdaq futures take a breather after Dow's record rally

Market Overview - US stock futures are stable as investors evaluate AI roadmaps from Nvidia and AMD, with S&P 500 contracts hovering just below flat and Nasdaq 100 down approximately 0.2% [1] - The Dow Jones Industrial Average futures are also little changed following a record-setting rally on Monday [1] AI Developments - Nvidia's CEO Jensen Huang introduced the next-generation Vera Rubin AI superchip platform and plans for a humanoid robot at CES, while AMD's CEO Lisa Su showcased the Helios system, promising significant performance improvements in upcoming data center GPUs [2][3] - Updates from Intel, Qualcomm, and other tech companies at CES are expected to enhance optimism for the AI sector, which has positively influenced stock performance [3] Commodities and Corporate News - Copper prices surged past $13,000 per ton for the first time, driven by concerns over potential Trump tariffs and increased stockpiling in the US [5][11] - Vistra's stock rose 4% premarket after announcing a $4.7 billion acquisition of Cogentrix Energy to meet rising power demand for AI data centers [5] - Novo Nordisk's stock increased nearly 5% after announcing new pricing for its Wegovy pill, while Microchip Technology's stock rose 4% following an upward revision of its sales forecasts [6] - Under Armour shares climbed almost 3% after a filing revealed Fairfax Financial Holdings owns a 22% stake in the company [7] International Market Trends - Chinese stock markets reached multiyear highs, with the CSI 300 Index up 1.6% and the Shanghai Composite Index rising 1.5%, driven by optimism in AI development and signs of economic growth [8] - Asian stocks are experiencing their best start to a year, with gains in currencies and bonds as investors seek opportunities beyond the US [9]