Corning Incorporated (NYSE:GLW) shares are trading higher premarket on Monday after the company inked a multi-year agreement with AT&T Inc. (NYSE:T). The agreement, which is valued over $1 billion, expands AT&T and Corning’s decades-long partnership. The deal entails supplying advanced fiber, cable, and connectivity solutions, supporting AT&T’s fiber network expansion and efforts to deliver high-speed internet to more Americans. AT&T will incorporate Corning’s latest Evolv connectivity solutions, including Evolv FlexNAP with Multifiber Pushlok Technology, designed to comply with the Build Amer…