U.S. equities finished higher in Tuesday trading, ending near session highs with the S&P 500 posting a fresh record close; its first since 24-Dec. A few dynamics were in focus today, with notable movers in both directions following Nvidia's CES keynote. Memory/storage and select semiconductor stocks were the big AI trade beneficiaries, while semiconductors more broadly were also supported by Microchip's guidance raise and a pro-cyclical rotation that defined Monday's session.