Advanced Micro Devices is trading 3.25% down at $574.94 as AI investment concerns pressure chip stocks. - Reuters cited renewed AI concerns across chipmakers, including worries about investment costs and returns, CXMT’s reported memory-technology progress, and Broadcom CEO Hock Tan’s warning about AI-investment expectations. - Investors looked past AMD’s OCP announcements, including its Helios rack blueprint; no clear company-specific catalyst was identified. - Semiconductors fell 2.64%, while major U.S. indices were mixed or little changed.