On August 19, Keysight rose 4.06% in after-hours trading, trading at $353.02/share, with turnover of $77.25 million. The surge was driven by the company's fiscal Q3 results and Q4 guidance that substantially exceeded Wall Street consensus.

For fiscal Q3 ended July 31, Keysight reported adjusted earnings of $3.07 per diluted share, well above the $2.48 analyst estimate, and up from $1.72 a year earlier. Revenue came in at $1.85 billion versus the $1.75 billion consensus, representing a 37% year-over-year increase from $1.35 billion. For fiscal Q4, the company guided adjusted EPS of $3.34 to $3.40 on revenue of $1.93 billion to $1.95 billion, significantly surpassing analyst expectations of $2.68 and $1.83 billion respectively.

The broad-based beat reflects recovering new orders and sustained enterprise-level test demand. Earlier in the regular session, the stock had declined approximately 3% amid pre-earnings caution. Major brokerages including Morgan Stanley and JPMorgan had previously maintained overweight ratings with $400 price targets, citing Keysight's architecture-agnostic exposure to AI infrastructure spending and diversified end-market growth drivers.

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