Semiconductor, storage, and optical communication stocks rise in pre-market trading; AAOI surges 15.5%

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On August 7, 2026, the Fear and Greed Index showed early signs of optimism as semiconductor, storage, and optical communication stocks rose in pre-market trading. Applied Optoelectronics (AAOI) surged 15.5%, while Lam Research (LRCX), Intel (INTC), Applied Materials (AMAT), and Arm (ARM) also advanced. In the digital asset market, SK Hynix (SKHY), Micron (MU), Western Digital (WDC), SanDisk (SNDK), and Seagate (STX) edged higher. Optical communication names such as Astera Labs (ALAB), Coherent (COHR), Credo (CRDO), and Lumentum (LITE) also gained ground.

According to market data, on August 7, ahead of the U.S. stock market open on Friday, the semiconductor, memory, and optical communications sectors rose in tandem, with Applied Optoelectronics (AAOI) up 15.5%.

In the semiconductor sector, Lam Research (LRCX) rose 1.22%, Intel (INTC) increased 1.17%, Applied Materials (AMAT) gained 1.43%, and Arm (ARM) climbed 1.77%.

In the storage sector, SK Hynix (SKHY) rose 0.21%, Micron Technology (MU) rose 1.28%, Western Digital (WDC) rose 2.1%, SanDisk (SNDK) rose 2.15%, and Seagate Technology (STX) rose 0.94%.

Optical communication stocks led gains, with Astera Labs (ALAB) up 2.36%, Coherent (COHR) up 5.07%, Credo (CRDO) up 2.07%, and Lumentum (LITE) up 4.91%.

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