Advanced Micro Devices shares jumped more than 5% in midday trading on Thursday, outpacing Nvidia and Intel as investors moved back into chip names after a brief pause in the artificial-intelligence rally. AMD traded at $520.93, up 5.1%, with an intraday high of $526.90; Nvidia rose 0.5%, while Intel slipped 0.4%. The iShares Semiconductor ETF gained 1.9%, and the Nasdaq-100 tracker QQQ rose 0.9%.