On June 26, Lumentum Holdings fell 4.1% in pre-market trading, trading at $836.3/share, with turnover of $2.3874 million.

On the news front, the decline was driven by two key factors. The communication equipment sector weakened broadly, with Applied Optoelectronics down 4.77%, Nokia down 3.22%, Ciena down 1.54%, and Arista Networks down 1.06%, as sector-wide selling pressure amplified individual stock declines through linkage effects.

Additionally, independent research firm SemiAnalysis previously published a report indicating that co-packaged optics (CPO) mass production timelines may be pushed back to 2028 or even 2029, with system-level yields at only approximately 19% — far below mass production standards. This fundamental concern over CPO delays continues to suppress sentiment across the optical communications sector, offsetting prior positive remarks from the company's CEO regarding near-packaged optics (NPO) opportunities at the Mizuho Technology Conference.

(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.)