The Nasdaq notched a record high close, lifted by Micron Technology and other AI-related stocks, while the S&P 500 ended flat and the Dow closed lower. Lisa Bernhard reports ▻ ↧ Nasdaq reaches record high close, AI stocks rally The Nasdaq notched a record high close on Tuesday, lifted by Micron Technology and other AI-related stocks, while ​the S&P 500 hovered just below a record high as oil prices traded around $100 per barrel.