Optics stocks including Lumentum, Coherent, and Corning are rising sharply while the broader market declines, driven by strong demand for optical connectivity in AI data centers. Lumentum's stock is up 3%, extending its 156% year-to-date gain, supported by robust revenue growth and optimistic guidance from recent earnings. The buying appears thematic, linked to hyperscaler demand rather than any new announcements. As of Sep 18, 2026 21:34 WIB, Lumentum trades at USD 907.09, closer to its 52-week high of USD 1.05K than its low of USD 149.61, showing strong investor interest with 93% buy orders on Pluang. Coherent, at USD 307.49, remains well above its 52-week low of USD 106.52 but below its high of USD 426.89, with 81% buy activity. Corning, priced at USD 150.93, is nearer to its 52-week low of USD 78.03 than its peak of USD 255.79, and sees more selling pressure with 62% sell orders, contrasting the buying enthusiasm in optics stocks noted in the news.