Corning's core sales in the third quarter reached $5.08 billion, up 19% year-on-year and exceeding estimates.

Corning shares rose more than 4% in premarket trading, with core sales in the third quarter reaching $5.08 billion, up 19% year-over-year, compared to the market estimate of $5.02 billion. Sales from the optical communications segment grew 44% year-over-year to $2.38 billion. Core earnings per share were $0.91, while the market estimate was $0.89. Corning expects core earnings per share in the fourth quarter to be between $0.96 and $1.00, with the market estimate at $0.93. Core sales are expected to be between $5.2 billion and $5.3 billion, while the market estimate is $5.2 billion.