S&P 500, Nasdaq post record closes as AI stocks drive after-hours action
The S&P 500 and Nasdaq closed at record highs Tuesday, with the S&P up 0.61% and the Nasdaq rising 1.19%, while the Dow slipped 0.23%. Micron briefly topped $1 trillion in value after UBS raised its price target. Qualcomm surged nearly 5% on a reported chip deal with ByteDance. Zscaler fell 15% after hours on weak revenue guidance.