S&P 500 additions spark after-hours surge while semiconductor heavyweights stumble on mixed signals. The stock market closed Friday with major indexes hitting record highs before reversing lower, but the real action happened after the bell. S&P Global announced that AppLovin, Robinhood, and Emcor will join the S&P 500 index before the September 22 open, sending these stocks surging in extended trading. Meanwhile, AI darlings like Nvidia and AMD fell despite Broadcom’s strong earnings performance. How index inclusion mechanics create more market volatility than fundamental AI developments gets unpacked by Gradiopexo junior brokers. The divergence reveals a critical market dynamic often...
February 3, 2026February 3, 2026