Viavi Solutions is trading 5% up at $40.97 after investors continued reacting to August 5 earnings that exceeded revenue and EPS expectations. - Fiscal fourth-quarter revenue reached $443.1 million. - Management’s Q1 fiscal 2027 outlook called for $450 million–$460 million in revenue and stronger-than-expected adjusted EPS, supported by data-center demand, Network and Service Enablement growth, and Spirent acquisition contributions. - The move is company-specific rather than primarily market-driven; trading is active during the August 6 session, but volume data was not provided.