On July 29, Lumentum fell 5.62% in regular trading, trading at $612.01/share, with turnover of $550 million. The decline came as persistent concerns over the pace of AI infrastructure capital expenditure continued to pressure the optical communications sector broadly.

On the news front, Corning's Q3 guidance disappointed the market earlier, with its core sales forecast range of $4.9 billion to $5.0 billion placing the upper limit merely in line with consensus expectations and the midpoint slightly below. This triggered a sector-wide selloff, with Lumentum having already plunged over 11% in the prior session. Funds are rotating away from the high-investment, uncertain-return AI hardware narrative toward more cautious pricing, as optical module and high-speed interconnect demand remains highly dependent on AI data center capex. Within the Communication Equipment sector, Applied Optoelectronics fell 7.86%, Nokia fell 4.14%, Ciena fell 3.76%, and Arista Networks fell 3.18%, while Cisco edged up 0.45%.

Lumentum's next earnings report is scheduled for August 11 after market close, with consensus EPS estimates at $2.62.

(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.)