Optical Communications

Optical fiber, cable and connectivity sold to data-center operators and telecom carriers. Enterprise Networks serves AI data-center buildouts, and Carrier serves long-haul, metro and fiber-to-the-home networks. It is Corning's largest business by sales.

Why it matters to the stock. This is the main growth engine. Demand for AI data-center interconnects drives most of the company's recent earnings growth, so its sales and margins decide much of the stock's direction.