Jenny Horne turned to the A.I. trade ahead of the opening bell. The big winner: Micron (MU), which posted strong earnings and guidance that shows ample DRAM and A.I. chip demand. Jenny talks about what the company's print signals for other chipmakers, including Nvidia (NVDA). Meanwhile, Apple (AAPL) got a price target cut from JPMorgan despite the firm's confidence of "robust" near-term demand.