US stocks reached record highs on Tuesday, with the S&P 500 closing at a record high and the Dow Jones surpassing 49,000 for the first time. Tech stocks like Nvidia and AMD unveiled their AI roadmaps at CES, while Amazon, Micron, and Broadcom saw gains. Key economic data, like the Services PMI, showed slower growth. The market is closely watching the December jobs report for Fed policy clues. Copper hit a record high, and Qualcomm rose after unveiling a new PC chip at CES. Stocks remained steady at the open as investors await more data this week. Oklo stock surged after a major investment, while Chinese stocks hit multiyear highs. AMD CEO Lisa Su revealed plans to compete with Nvidia in the AI race for 2026. Copper prices soared, and Nvidia introduced the Vera Rubin superchip at CES.

Read more at Yahoo Finance: Dow crosses 49,000, S&P 500 jumps to new high in record-setting start to year