GLW Gains Momentum in Optical Communications: Can Growth Continue?

Corning Incorporated GLW is witnessing solid momentum in the Optical Communications segment. In the second quarter, the segment’s sales increased 32% year over year to $2.07 billion, while segment net income jumped 77% to $438 million.

AI-driven data center investment is the biggest catalyst. The expansion of generative AI is increasing the amount of high-speed optical connectivity needed inside and between data centers. This is driving strong demand for Corning’s GenAI-related enterprise products. Within the optical communications segment, Enterprise Networks sales increased 65% year over year.

The company disclosed that its current growth is primarily driven by Scale-Out infrastructure. In Scale-Out infrastructure, operators connect large numbers of servers and GPUs leveraging high-bandwidth optical links. Beyond the current Scale-Out opportunity, the company expects significant potential from Scale-Up systems. In Scale-Up systems, high-bandwidth connections are needed between GPUs and other computing components. This will likely create another major growth opportunity for Corning’s optical connectivity portfolio in upcoming years.

Its growth prospect is strengthened by strategic relationships with major tech organizations. Amazon announced a multiyear, multibillion-dollar agreement with Corning. Per the deal. Amazon will utilize Corning’s optical fiber, cable and connectivity solutions for its U.S. data center infrastructure. NVIDIA and Corning are also collaborating for expansion of U.S. optical connectivity manufacturing capacity. Such collaborations bode well for sustainable growth.

How Are Competitors Faring?

Corning faces competition from Amphenol Corporation APH and Ciena Corporation CIEN in this domain. Amphenol’s high-speed copper, fiber optic and power interconnect portfolio gives it exposure across multiple AI data-center architectures. In second-quarter 2026, Communications Solutions revenues jumped 85% year over year to $5.38 billion. The segment remained Amphenol’s largest business, benefiting from strong demand for high-speed connectivity applications, particularly in the IT datacom market.

Ciena is witnessing encouraging demand trends as AI applications drive higher network traffic and bandwidth consumption across cloud and service provider environments. Customers are prioritizing investments in network infrastructure to support AI model training, data ingestion and inference workloads. Networking Platforms remained the largest contributor for Ciena, generating $1.27 billion in revenues and representing 81.1% of total sales. Within the segment, Optical Networking revenues increased to $1.10 billion from $773.6 million a year ago.

Corning's Price Performance, Valuation & Estimates

Corning has gained 124.4% compared to the communications components industry’s growth of 193.3%.

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From a valuation standpoint, GLW is currently trading at a discount compared with the industry. Going by the price/earnings ratio, the company’s shares currently trade at 38.22 forward 12-month earnings, higher than 37.41 for the industry.

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Earnings estimates for Corning for 2026 and 2027 have increased over the past 60 days.

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Corning currently has a Zacks Rank #3 (Hold). You can see the complete list of today’s Zacks #1 Rank (Strong Buy) stocks here.

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This article originally published on Zacks Investment Research (zacks.com).

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