On September 30, Lumentum fell 3.12% in regular trading, trading at $942.76/share, with turnover of $1.317 billion. The decline came as the broader optical communications sector faced selling pressure, outweighing a string of bullish analyst calls on the stock.

On the news front, Bernstein initiated coverage on Lumentum with an Outperform rating and a $1,220 price target, while Citigroup had recently raised its target to $1,400 from $1,200, and Rothschild adjusted its target to $1,294.85 — reinforcing a strong institutional buy consensus. However, sector-wide headwinds dominated, with peers Ciena declining 3.14% and Applied Optoelectronics falling 3.21%. Market sentiment was further weighed by NVIDIA's advancement in glass substrate technology, which triggered short-term concerns over potential shifts in optical interconnect technology pathways. The semiconductor and optical communications sectors had already experienced broad-based selling in the prior session, and sentiment had yet to fully recover.

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