Philadelphia Semiconductor Index Plunges 7% as AMD and Intel Lead Broad Selloff

The Philadelphia Semiconductor Index fell 7% intraday in a broad semiconductor selloff spanning chip designers, memory producers, foundries and equipment suppliers. AMD declined 8.79% and Intel fell 8.40%, while Micron dropped 6.61% and ASML’s ADR lost 6.92%. Nvidia was down 4.61%, Broadcom fell 4.48%, TSMC declined 4.84%, and Qualcomm lost 3.14%. The synchronized declines affected companies across the AI hardware supply chain, from processors and memory to manufacturing and semiconductor equipment. Market attention is on whether AMD, Intel, memory names and equipment suppliers stabilize after the session’s broad weakness.