Chip stocks jump on AI optimism; Dow ends at record high

Moderna jumped after BofA Global Research raised its price target on the drugmaker, helping lift the S&P 500 healthcare index. Memory and storage technology stocks rallied after SanDisk, Western Digital, Seagate Technology and Micron Technology ‌all hit record highs. The PHLX chip index also hit an all-time high, bringing its gain in the first three trading sessions of 2026 to about 8%. "I think we're going to have a very strong earnings season for Big Tech, and all those capex estimates that we hear abou ...