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Keysight Technologies (KEYS) Stock Dropped, What Is Driving Attention Now?

Simply Wall St·09/15/2026 08:22:09
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Keysight Technologies (KEYS) has drawn fresh investor attention after showcasing high-speed optical and AI data center test solutions and announcing a research tie-up on AI safety for software-defined vehicles earlier this month.

The recent AI data center and automotive safety announcements land after a choppy stretch for Keysight Technologies, with the share price down 7% over the last day and 12% over the past month, yet still up 52% year to date. That mix of short-term selling pressure and strong year-to-date share price return sits alongside an 83% total shareholder return over one year and a 137% total shareholder return over three years. This suggests the latest pullback reflects a reset in expectations rather than a reversal of the longer trend.

Seize this pullback in Keysight Technologies to reassess your exposure to AI infrastructure by scanning a curated set of 60 AI infrastructure stocks that are also leaning into high-speed data center demand.

Bulls see Keysight Technologies as a rare pure play on high-speed test gear for AI and autos, while bears argue the recent run already prices that in. Which side does the current valuation actually support?

Most Popular Narrative: 24% Undervalued

Keysight Technologies last closed at $314.96, while the most followed narrative pegs fair value closer to $415.08. That gap sits on a story built around rising AI test intensity, richer margins and a different view of what the business can earn over the next several years.

Expansion of software and recurring service offerings, now comprising 36% and 28% of total revenue respectively, increases gross and net margins by enhancing revenue stability, improving product mix, and reducing cyclicality from traditional hardware segments. Increased government and defense spending in both the US and Europe is driving robust growth in aerospace/defense end markets, while sovereign R&D priorities (notably in quantum computing and advanced semiconductors) enable Keysight to benefit from multi-year funding cycles, supporting both higher margins and long-term earnings visibility.

See why 17 investors see Keysight Technologies as 24% undervalued.

Result: Fair Value of $415.08 (UNDERVALUED)

Still, two pressure points could derail the Keysight Technologies story, including higher tariff costs squeezing profitability and any slowdown in AI data center spending.

Find out about the key risks to this Keysight Technologies narrative.

Another View: What Multiples Say About Keysight Technologies

Analyst narratives frame Keysight Technologies as undervalued, yet the market is pricing the stock at a P/E of 41.9x. That is richer than both the US Electronic industry at 29.3x and the estimated fair ratio of 35.2x, which points to valuation risk if sentiment cools.

For a closer look at how that premium compares with peers and the fair ratio the market could move toward, See what the numbers say about this price — find out in our valuation breakdown.

NYSE:KEYS P/E Ratio as at Sep 2026
NYSE:KEYS P/E Ratio as at Sep 2026

Next Steps

Mixed signals around Keysight Technologies can either paralyze you or push you to inspect the data yourself and move with intent. To weigh the concern around 1 or more risks against the appeal of 1 or more rewards and decide where you stand, start with the 4 key rewards and 1 important warning sign.

Looking for more Keysight Technologies investment ideas?

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This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.