Philadelphia Semiconductor Index fell 5.7% as AMD (AMD.O) slid 10%, Arm (ARM.O) dropped 9.5%, Marvell (MRVL.O) fell 5%, Qualcomm (QCOM.O) declined 6.3% and NVIDIA (NVDA.O) lost 3.3%; the sector's combined market capitalization fell below $5 trillion.

2026-10-30

Philadelphia Semiconductor Index fell 5.7% as AMD (AMD.O) slid 10%, Arm (ARM.O) dropped 9.5%, Marvell (MRVL.O) fell 5%, Qualcomm (QCOM.O) declined 6.3% and NVIDIA (NVDA.O) lost 3.3%; the sector's combined market capitalization fell below $5 trillion.