Keysight Technologies' stock surged 15.92% in pre-market trading, extending significant gains from the previous after-hours session.

The sharp rise follows the electronic equipment maker's release of its fiscal first-quarter 2026 results, which exceeded analyst expectations. Keysight reported adjusted earnings per share of $2.17, beating the consensus estimate of $2.00, while revenue climbed 23% year-over-year to $1.60 billion, surpassing the estimated $1.54 billion.

Investor optimism was further fueled by the company's robust second-quarter outlook, forecasting revenue between $1.69 billion and $1.71 billion and adjusted EPS in the range of $2.27 to $2.33, both well above consensus estimates. The strong performance and guidance were driven by sustained demand from data centers expanding to support artificial intelligence (AI) workloads, with the Communications Solutions Group revenue increasing 27% and the Electronic Industrial Solutions Group rising 15%.