On June 26, Applied Optoelectronics fell 6.01% in regular trading, trading at $127.715/share, with turnover of $267 million.

On the news front, the decline was primarily driven by persistent bearish expectations surrounding Co-Packaged Optics (CPO) commercialization timelines. Although NVIDIA stated that CPO switches remain on track for mass production in the second half of the year, Morgan Stanley's assessment that CPO volume ramp-up will fall short of expectations has intensified bull-bear divergence. A SemiAnalysis report previously indicated that large-scale CPO adoption could be delayed to 2028 or even 2029, with system-level yields potentially as low as 19.4%, well below market expectations for near-term scaling.

Within the Communication Equipment sector, peers declined broadly: Lumentum down 9.86%, Nokia down 6.59%, Arista Networks down 4.26%, Ciena down 3.57%, and Cisco down 3.03%. As a high-beta name with significant prior gains, AAOI is particularly vulnerable to recalibration of frontier technology timelines, reflecting a market shift from chasing thematic exposure toward demanding greater earnings certainty.

(The above content is based on publicly available market information, generated by a program or algorithm, and is intended solely as a stock movement alert. It does not constitute investment advice or a basis for trading decisions.)