On August 19, Applied Optoelectronics fell 5.13% in regular trading, trading at $124.82/share, with turnover of $1.055 billion.

On the news front, the optical communication sector extended the prior session's sharp collective selloff, with same-sector names Lumentum down 4.52%, Arista Networks down 2.61%, and Nokia down 1.11%, sector-wide weakness continuing to drag on the stock. The previous trading day saw storage, optical communication, and AI cloud services sectors face concentrated selling — Coherent plunged over 12%, Lumentum dropped over 9%, and CoreWeave fell over 12% — as the market began reassessing return risks associated with AI infrastructure's heavy-asset model.

Applied Optoelectronics had already plunged over 15% in the prior session. While the company's Q2 revenue surged 86% year-over-year to $191.9 million with data center business exceeding $100 million for the first time, its Q3 guidance came in below Wall Street expectations, providing an ongoing overhang. The rapid multi-day reversal from recent highs reflects heightened volatility and swift sentiment shifts characteristic of the current AI hardware trade.

(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.)