Dow at a record but chip shares split in US after-hours trading before July 4 break
Dow closed at a record while AI names slid as U.S. stocks finished the session before the July 4 break. Volume and market breadth told the story—U.S. exchange volume reached 19.92 billion shares, which is about 14.7% under the 20-day average. The Dow picked up 594.83 points as the Philadelphia semiconductor index dropped 5.4%. The mix is important because the S&P 500’s record close wasn’t a straight run for growth stocks. AP said about 70% of S&P 500 stocks gained, but losses in chip names left the main indexes split. Micron Technology Inc dropped 5.5%, Nvidia Corp slipped 1.4%, and Lam Research Corp sank 10.2%.