On June 4, Applied Optoelectronics fell 5.42% in after-hours trading, trading at approximately $174.20/share, with trading volume of $44.24 million.

On the news front, the decline is primarily attributed to significant profit-taking pressure following a cumulative surge of over 15% across two prior trading sessions. That rally was driven by notable investor Serenity publicly endorsing AAOI as a top U.S. photonics pick — likening it to the next SanDisk — and the company's Xinbei factory securing production approval from a hyperscale customer for 800G optical transceiver capacity. The stock had already dropped 8.03% in the prior session, and the current pullback extends that retracement.

Simultaneously, the Communication Equipment sector traded broadly lower, with Lumentum down 3.8%, Nokia down 4.78%, Arista Networks down 4.58%, and Ciena down 2.16%, reflecting subdued sector sentiment that further weighed on the stock.

(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.)