Why Corning (GLW) Stock Is Trading Up Today

Sep 29, 2026
why-corning-(glw)-stock-is-trading-up-today

Radek Strnad

2 min read

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Why Corning (GLW) Stock Is Trading Up Today

What Happened?

Shares of glass and electronic component manufacturer Corning (NYSE:GLW) jumped 3.1% in the pre-market session after the company announced a multi-year agreement valued at over $3 billion with AT&T to deliver fiber and cable.

According to Corning’s announcement, the multi-year deal is structured to supply fiber and cable for nationwide network growth, with production supported by the company’s U.S. manufacturing facilities. Corning and AT&T agreed on the contract to help meet accelerating broadband demand propelled by internet use and artificial intelligence. The agreement represents a multi-year commitment exceeding $3 billion for Corning’s optical fiber products.

The shares were trading at $158.65, up 4.7% from the previous close.

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What Is The Market Telling Us

Corning’s shares are extremely volatile and have had 57 moves greater than 5% over the last year. In that context, today’s move indicates the market considers this news meaningful but not something that would fundamentally change its perception of the business.

The previous big move we wrote about was 8 days ago when the stock gained 6% on the news that the company announced a partnership with Qualcomm Technologies and Lumentum to demonstrate high-density optical interconnects for artificial intelligence architectures at ECOC 2026.

The companies announced plans to showcase a board-level optical die-to-die interconnect system at ECOC 2026 in Málaga, Spain per TipRanks. The joint demonstration highlights high-density 1060 nm VCSEL optical connectivity designed for artificial intelligence scale-up. The demonstration integrates Qualcomm’s interface IP subsystem, Lumentum’s optical platform, and Corning’s multimode fiber connectivity. The optical interconnect system aims to facilitate data transmission across advanced computing hardware. The announcement also redirected investor attention following Corning’s previous $2 billion equity offering.

Corning is up 75% since the beginning of the year, but at $158.65 per share, it is still trading 38% below its 52-week high of $255.69 from June 2026. Investors who bought $1,000 worth of Corning’s shares 5 years ago would now be looking at an investment worth $4,273.

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