Shares of Keysight Technologies (KEYS) surged 13.58% in pre-market trading on Tuesday following the release of its fourth-quarter fiscal 2025 results and first-quarter fiscal 2026 guidance, both of which surpassed analyst expectations. The electronic measurement technology company also announced a new $1.5 billion share repurchase program, further boosting investor confidence.

Keysight reported Q4 adjusted earnings per share of $1.91, beating the consensus estimate of $1.83. Revenue for the quarter reached $1.42 billion, surpassing the expected $1.38 billion. The company's performance was driven by strong growth across its business segments, with the Communications Solutions Group (CSG) achieving an 11% year-over-year increase in revenue to $990 million, fueled by ongoing investment in AI data center infrastructure, non-terrestrial network applications, and defense modernization.

Looking ahead, Keysight provided an optimistic outlook for Q1 fiscal 2026, projecting revenue between $1.53 billion and $1.55 billion, significantly above the analyst consensus of $1.42 billion. The company also forecast adjusted earnings per share in the range of $1.95 to $2.01, exceeding the Street's expectation of $1.84. This strong guidance, coupled with accelerating order momentum and a return to full-year growth, contributed to the stock's impressive pre-market rally. The announcement of a new $1.5 billion share repurchase program further signaled management's confidence in the company's future prospects and commitment to returning value to shareholders.