On September 14, Lumentum fell 3.78% in pre-market trading, trading at $876.0/share, with turnover of $7.0469 million.

On the news front, U.S. AI giants Anthropic, OpenAI, and SpaceX AI jointly called for slowing the pace of AI development, triggering broad selling pressure across AI hardware stocks in pre-market and dark-pool trading. SK Hynix fell over 4%, Marvell Technology dropped over 4%, Corning declined over 4%, and NVIDIA slipped 2%, with Lumentum falling in tandem. Within the Communication Equipment sector, Nokia fell 8.72%, Applied Optoelectronics dropped 6.23%, Ciena declined 3.83%, Arista Networks fell 3.53%, and Cisco lost 1.41%.

The selloff was amplified by profit-taking after Lumentum surged over 14% between September 8 and 9, fueled by Goldman Sachs raising global optical module shipment forecasts and first-time Buy coverage from Deutsche Bank (target $1,200) and Evercore ISI (target $1,100). Short-term accumulated gains made the stock vulnerable to sector-wide headwinds as market concerns grew over a potential downward revision in AI training-side compute demand growth expectations.

(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.)