US Stocks Movement | Corning drops over 5% pre-market after previously rising more than 7%

Gelonghui, January 28th｜Corning (GLW.US) fell more than 5% in pre-market trading after previously rising over 7%. In terms of news, Corning's core sales in the fourth quarter were $4.41 billion, with an estimate of $4.36 billion; core earnings per share were $0.72, with an estimate of $0.70. The company expects core sales for the first quarter to be between $4.2 billion and $4.3 billion, while the market estimate is $4.25 billion. It expects core earnings per share for the first quarter to be $0.66-0.70, while the market estimate is $0.67.