Corning Stock Has Lost Half Its Value Since June. Is It a Buy Before Its Next Report?
Corning's stock has experienced significant volatility in 2026, dropping over 50% from its June peak despite strong earnings growth. Investors are weighing the company's expansion in optical connectivity against recent market sell-offs.
Why it matters
Corning's role in data center infrastructure makes it a bellwether for the broader tech and AI hardware supply chain.
Shares of glass and fiber-optics maker Corning ( GLW -0.24% ) have had a wild 2026. The stock almost tripled between January and late June, closing at a record $255.69 on June 29. At roughly $125 as I write, shares are now down about 51% from that peak -- including an 8% fall on Oct. 22 alone.
But the company is growing fast. Corning's second-quarter core earnings per share, its non-GAAP (adjusted) measure, climbed 30% year over year. Management also forecast around 28% growth in the third quarter.
Corning posts those third-quarter results on Tuesday, Oct. 27. And despite its recent losses, the stock's still up over 40% for 2026.
I'd say much of the decline reflects a stock giving back a rally that got ahead of the business.
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