# Corning tumbles 12% after earnings, leading rout in optical stocks — retained record

> Retained news record from news:cnbc-tech.

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source: [news](https://highsignal.app/data/news) (news:cnbc-tech)  published 2026-07-28 20:22 ingested 2026-07-29 08:28

[original source ↗](https://www.cnbc.com/2026/07/28/corning-glw-stock-optical-ai.html)

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Shares of glassware maker Corning dove 12% on Tuesday after the company reported its second-quarter earnings, dragging down other optical component names in the artificial intelligence space.
Despite the company posting a beat on the top and bottom lines, revenue forecasts for the current quarter fell below Wall Street's consensus. The company expects core revenue to grow 16%, a range of $4.9 billion to $5 billion. Factset expected $5 billion.
Corning reported earnings per share before the bell on Tuesday of 78 cents versus estimates of 76 cents. Revenue came in at $4.74 billion, also topping the Street's estimates of $4.61 billion.
Shares of other optical component names like Marvell, Lumentum, AXT and Coherent also saw losses on Tuesday, with AXT and Coherent each losing 10%.
Corning's networking solutions and fiber optic cable have become a growing portion of the AI data center buildout, since their equipment enables fast connections between the facilities and the racks and chips inside.
In June, Corning inked its latest multi-year deal to power and connect Amazon's expanding fleet of data centers, one in a string of billion-dollar deals it's inked in recent months as hyperscalers and other AI companies race to meet their skyrocketing demand for computing power.
CNBC's Katie Tarasov contributed to this report.
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