Premarket weakness in AI-linked chip and storage names carried into the session, with the Philadelphia Semiconductor Index falling 3% and losses hitting Micron, Arm, Intel, AMD, Broadcom and others.
U.S. AI-related and semiconductor stocks fell broadly on July 13, with earlier premarket declines in names such as Micron, Nvidia, SanDisk, Seagate, Western Digital, AMAT, LRCX, LITE and AAOI followed by a 3% drop in the Philadelphia Semiconductor Index after the open. BlockBeats, citing BIT market data, reported premarket losses including Micron and Western Digital each down 6.6%, SanDisk down 6.5%, Seagate down 5.4%, AMAT down 4.72%, LRCX down 4.31%, LITE down 4.24%, AAOI down 4.01% and Nvidia down 2.16%. Odaily, citing MSX.COM data, later reported Nvidia down 0.64%, Broadcom down 2.19%, Micron down 5.79%, AMD down 3.68%, ASML down 2.22%, Intel down 4.55% and Arm down 5.87%, while TSMC rose 0.11%.