AI networks are pulling Keysight higher
- Q2 2026 revenue rose 31% year over year, with about 24% organic growth after acquisitions and currency.
- Commercial communications revenue jumped 40% as customers bought test tools for terabit networking tied to AI data centers.
- CSG now supplies 72% of revenue, so Keysight is leaning more toward communications and defense markets.
- Recent deals for Spirent, OSG, and PowerArtist add software and network-test depth, but integration still has to prove itself.
- A one-time tariff refund helped reported profit, so investors should separate real margin progress from accounting noise.
AI demand meets test leadership
Keysight sits in a useful spot. When companies build faster chips, wireless networks, electric vehicles, or defense systems, they need tools to design, test, and validate them. Keysight sells those tools, and its deep product set makes it hard for customers to switch once its systems are part of their labs and factories.
The latest quarter made the growth case stronger. Revenue for the three months ended April 30, 2026 was up 31% year over year, or about 24% organically. The biggest driver was commercial communications, where revenue rose 40% as customers spent on high-speed networks and 400G, 800G, and 1.6 terabit transceiver capacity to support AI demand.
The caution is that the clean picture is not as clean as the headline. Keysight recorded a $100 million receivable from IEEPA tariff refunds and a $93 million reduction to cost of sales, partly offset by a $40 million revenue reduction for customer surcharge refunds. That helped reported margins and income, so the key question is what margins look like without that one-time benefit.
Finn's view is positive but not unchecked. Growth and financial health look good, while valuation is only middling. The stock needs continued organic growth, real deal synergies, and clearer normalized margins to earn a higher view.
Selling tools for hard engineering problems
Keysight makes money by selling electronic design software, test instruments, integrated systems, and services. Customers use them in research labs, design teams, factories, field installation, and network optimization. The buyer is often solving a hard technical problem, not buying a simple office tool.
That matters because accuracy, trust, and workflow fit are valuable. If a chip company or network builder relies on Keysight tools to prove a new product works, replacing those tools can be slow and risky. This creates a moat from R&D spending, product breadth, and long customer relationships.
The model can still break. Customers can delay lab upgrades or factory spending in weak markets. Tariffs can change costs. Export controls or trade fights can limit sales in important international regions. Big acquisitions can also dilute margins if they do not fit well.
What Keysight sells
Electronic design and test software
This software helps engineers simulate, design, and validate electronic systems before and during product development. ESI Group, OSG, and PowerArtist expand this software push.
Test and measurement instruments
These are the hardware tools engineers use to measure signals, chips, networks, and devices. They are core to Keysight's role in R&D and manufacturing workflows.
Communications test systems
These solutions serve wireless, wireline, high-speed data center, and network assurance needs. Spirent adds more wireless network test, assurance, and positioning technology.
Aerospace, defense, and government solutions
Keysight supports complex radar, communications, space, and defense modernization work. This market can add stability when commercial cycles slow.
Automotive, energy, and industrial tools
These products support software-defined vehicles, autonomous driving, industrial IoT, digital health, and energy systems. Demand has been mixed, with automotive and energy weaker in recent filings.
Semiconductor measurement solutions
Keysight sells tools used to develop and test advanced semiconductor technologies. AI-related chip demand helped EISG grow in Q2 2026.
Two groups, one bigger engine
Segment mix is from the three months ended April 30, 2026. CSG is now 72% of revenue, so changes in communications and defense spending carry the most weight.
What could go wrong
AI network spending fades
High impact · Medium oddsThe recent acceleration depends heavily on customers spending for high-speed networks, terabit solutions, and transceiver capacity tied to AI. If data center or telecom budgets pause, Keysight's fastest-growing demand source could cool. That would hit CSG first because it is the larger segment.
One-time tariff gain hides weaker margins
Medium impact · Medium oddsThe IEEPA tariff reversal created a $100 million receivable and reduced cost of sales by $93 million in Q2 2026, partly offset by a $40 million revenue reduction. This made reported results look better than normal operations alone. Investors need to see the margin base after this item rolls off.
Tariff refund is not fully collected
Medium impact · Medium oddsKeysight recorded a receivable for tariff refunds after a U.S. Supreme Court ruling on IEEPA tariffs. The company also disclosed uncertainty about timing and final recovery. If it cannot collect the full amount, future results could take a hit.
Acquisition integration disappoints
Medium impact · Medium oddsKeysight closed several large deals in October 2025, including Spirent, OSG, and PowerArtist. These deals can add growth and software depth, but they also add execution risk. If revenue synergies or cost savings are slow, consolidated margins could lag the bull case.
Trade and geopolitics pressure international sales
High impact · Medium oddsKeysight sells into global electronics and communications markets, including Asia Pacific. Tariffs, export controls, and trade restrictions can raise costs, limit shipments, or reduce customer demand. This is a real risk for a company tied to advanced technology supply chains.
Industrial recovery loses steam
Medium impact · Medium oddsEISG grew 24% year over year in Q2 2026, helped by AI-related semiconductor demand, software-defined vehicles, and industrial IoT. But earlier filings showed automotive and energy weakness. If those markets remain soft, EISG may not provide the balance investors expect.
In one breath
What does Keysight Technologies do?
Keysight sells electronic design and test solutions. Its tools help engineers build and check chips, networks, cars, defense systems, and other complex electronics.
Why is AI important to Keysight?
AI data centers need faster networking and advanced semiconductors. Keysight benefits when customers buy test tools for high-speed networks, terabit transceivers, and advanced chip development.
What does organic growth mean for Keysight?
Organic growth means growth that does not come from acquisitions or currency moves. In Q2 2026, total revenue rose 31%, while organic growth was about 24%.
What is the main risk for Keysight stock?
The biggest risk is that recent growth slows after AI-related demand and acquisition benefits are separated out. Investors also need to watch tariff refund collection and normalized margins.