Corning shares are pulling back today, reversing earlier gains that followed the announcement of a multi-year fiber supply agreement with AT&T valued at more than $3 billion.
The stock is sliding alongside a broader downturn in the optics and photonics industry, with peers like Coherent, Ciena, and Lumentum also trading lower. This downward momentum persists despite positive analyst sentiment earlier in the day, which had highlighted the company's strong year-to-date performance and a Zacks