On September 8, Lumentum rose 3.03% overnight, trading at $908.43/share, with turnover of approximately $20.89 million. The stock continued to gain momentum amid a broad-based rally in the optical communication sector.

On the news front, the optical communication sector received multiple bullish catalysts. A-share CPO concept stocks surged over 5% during the session, generating cross-market sentiment resonance that provided support for U.S.-listed optical communication names. Meanwhile, NVIDIA's Spectrum-X Ethernet silicon photonic switch entered full-scale mass production in mid-August, marking a pivotal milestone for CPO technology commercialization and reinforcing the AI optical interconnect growth narrative.

From an institutional perspective, Deutsche Bank initiated coverage on Lumentum with a Buy rating and a $1,200 price target, while Evercore ISI launched coverage with an Outperform rating and a $1,100 target. Analysts noted that Lumentum's order backlog now exceeds two years, with optical chip deliveries remaining in tight supply, validating the company's robust fundamental outlook. The company previously guided Q1 FY2027 revenue of $1.225–1.275 billion, significantly above the consensus estimate of $1.15 billion.

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