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U.S. semiconductor and optical-communication stocks extend gains after July 31 open, led by Applied Optoelectronics and Astera Labs

Chip, optical-communication and memory names built on the prior session’s rally after Friday’s open, with Applied Optoelectronics, Astera Labs, Coherent, Marvell, Intel and storage makers among the strongest movers.

Summary

U.S. semiconductor, optical-communication and memory stocks broadly extended the previous session’s gains after Friday’s open on July 31, with several names posting sharper advances than indicated in premarket trading. Applied Optoelectronics rose 13.38%, Astera Labs gained 13.25%, Coherent added 11.91%, Marvell climbed 8.54%, SK Hynix advanced 8.09%, Intel rose 6.90%, Sandisk gained 8.49%, Western Digital added 7.84%, Seagate advanced 7.63% and Micron rose 5.91%, according to BIT market data. The moves highlighted continued strength across chip-related and data-infrastructure shares as momentum carried from premarket trading into the regular U.S. session.

Terms & Concepts
  • optical-communication stocks: Shares of companies involved in technologies that transmit data using light, including fiber-optic and related network components
  • memory stocks: Shares of companies tied to data storage and memory-chip businesses
  • premarket trading: Stock trading that takes place before the main U.S. market session opens