US midday market brief: Nvidia weakness, Alphabet strength; what this rotation means for Q4

美股市场表现 - 美股市场周二表现分化但具有指示性，标普500指数上涨0.6% [1] - 纳斯达克综合指数攀升0.3% [1] - 道琼斯工业平均指数上涨1.18% [1]