GLW

Corning is 175 years old and makes glass — the screens on phones, the ceramic filters in car exhausts, the fiber optic cable that carries the internet. It is not the kind of company you'd expect to find in an AI story, and yet here it is. Last quarter sales grew 17% to $4.74 billion and earnings grew 30% to $0.78 per share, beating expectations. The optical communications business — fiber and cable for data centers — grew 32% to over $2 billion, with profit in that segment up 77%. The enterprise portion, which is the AI data center piece specifically, grew 65%. Management signed multiyear agreements with Amazon and NVIDIA and laid out a plan to nearly triple sales to a $40 billion annual pace by 2030. The stock got hammered anyway. And the reason is visible in the same earnings report: everything that isn't optical is barely moving. Glass Innovations, the display and consumer business, grew 1%. Automotive grew 2%. Solar grew 90% but still lost money. So roughly two-thirds of Corning is standing still while one-third is sprinting, and the stock price reflects the sprinting part. If AI data center orders slow down, you're left holding a low-growth industrial glass company — a fine business, but not one worth what people paid. Analysts reacted accordingly: Barclays cut its price target from $180 to $129, JPMorgan from $200 to $170, and Citi from $240 to $220, all in the days after a beat. Corning reported good numbers and got sold, and by now the pattern is the point rather than a curiosity. The market has stopped grading these companies on execution and started grading them on how much of their business depends on AI spending continuing. Corning's answer to that question is uncomfortable — it's growing because of AI and flat because of everything else. The upside is that unlike most of the group, there's a real business underneath if the AI part cools: fiber for telecom networks, Gorilla Glass, auto filters, all of it still there. That's a floor the others don't have. What we'd watch is whether the non-optical segments ever wake up. Management is promising 19% annual growth through 2030, and that math only works if display, automotive, and solar contribute something. Right now they aren't. (written with the help of Claude)