Summary

  • Keysight reported record fiscal-Q3 2026 orders of US$2.091 billion, up 56%. Management said acquisitions contributed five percentage points and currency removed one; orders still grew 52% on the company's core measure.
  • Revenue was US$1.846 billion, up 36%. The formal bridge removed US$84 million of acquisition/divestiture revenue and reversed a US$6 million currency headwind, producing US$1.768 billion of core revenue, up 31%.
  • GAAP operating income was US$461 million and margin 24.9%. Adding acquisition amortisation, share compensation, acquisition/integration charges and restructuring produced US$613 million and 33.2% non-GAAP margin. A further perimeter bridge yielded US$614 million of core operating income and 34.7% core margin.
  • Keysight says newly acquired businesses do not receive shared-service and corporate-infrastructure charges until they are integrated. Management now calls the recent integration largely complete. The next useful receipt is therefore a stable post-integration allocation, not a choice between one flattering number and one supposedly “real” number.

Four answers can be correct in the same quarter

The Q3 results presentation begins with a record: US$2.091 billion of orders, 56% more than a year earlier. The prepared remarks then supply the perimeter receipt. Acquisitions represented five percentage points of order growth. Currency was a one-point headwind. Excluding both, Keysight says orders grew 52% on a core basis.

This is not a confession that the record was acquired. The opposite is more striking. The reported rate was four points above the core rate, but the core rate was still exceptional. The acquisition bridge changes the explanation at the margin without erasing the underlying demand.

Revenue carries a similar but more explicit reconciliation. Reported revenue was US$1.846 billion against US$1.352 billion, a 36% increase. Keysight subtracts US$84 million of revenue from acquisitions or divestitures and adds US$6 million for the adverse currency effect. The result is US$1.768 billion of core revenue, 31% above the prior period.

The signs matter. In the consolidated table, currency reduced reported revenue by US$6 million; reversing that headwind raises the constant-currency core number. Acquisition and divestiture activity added US$84 million; removing it shrinks the current perimeter. Core is therefore not “revenue without anything management dislikes.” It is a defined constant-perimeter comparison, albeit one designed and reported by management.

Reported revenue answers what the company currently owns and sold. Core revenue asks how the older comparison base moved after removing recent ownership and currency changes. Orders add the current commercial commitments before recognition. They cannot be substituted for one another.

Acquisition effects are not distributed evenly

Keysight's Communications Solutions Group, or CSG, produced US$1.345 billion of Q3 revenue, up 43%. Its core revenue was US$1.280 billion, up 36%, after removing US$66 million of acquisition/divestiture revenue and adjusting for a US$1 million currency headwind. Electronic Industrial Solutions Group, or EISG, produced US$501 million, up 21%; its US$488 million core result grew 18% after US$18 million of acquisition/divestiture revenue and a US$5 million currency headwind were removed.

The regional bridge is even more useful. Americas revenue of US$729 million grew 29% reported and 20% core; recent acquisition/divestiture activity contributed US$52 million. Europe reported US$307 million, up 41%, while core growth was 32% after US$14 million of acquisition/divestiture revenue and a favourable US$6 million currency effect. Asia-Pacific revenue of US$810 million grew 42% reported and 41% core. Its acquisition/divestiture contribution was US$18 million, almost offset in the bridge by a US$12 million currency headwind.

One global acquisition percentage would conceal those differences. The Americas has the widest reported-to-core growth gap. Asia-Pacific has almost none. A commercial team, a segment manager and a capital allocator therefore need different decompositions even when they share the same consolidated total.

End markets explain the operational demand without resolving the accounting perimeter. Commercial Communications exceeded US$1 billion of quarterly revenue for the first time, reaching US$1.006 billion and growing 56%. Management said wireline exceeded wireless for the first time, driven by AI data-centre and related demand. Aerospace, Defense and Government revenue was US$339 million, up 14%. EISG reached a record US$501 million, up 21%.

Those are important market signals. They are not an asset-level acquisition bridge. Software and services represented about one third of revenue and annual recurring revenue 24% of the mix. Neither percentage reveals how much of the order record will become revenue, when it will convert, or which acquired business supplied it. Keysight also describes backlog as a record but publishes no amount in these materials. The adjective cannot be turned into a number.

The acquired perimeter was deliberately cut before it was measured

Keysight did not buy one unchanged Spirent box. Its fiscal-Q1 Form 10-Q records the 15 October 2025 purchase of all Spirent share capital for total consideration of US$1.564 billion. One day later, Keysight sold Spirent's high-speed-Ethernet, network-security and channel-emulation lines to VIAVI for US$399 million to satisfy regulatory conditions. Keysight retained other operations, including wireless network test and assurance and positioning technology.

On 17 October, Keysight also acquired Synopsys' Optical Solutions Group. Initial consideration was US$581 million; the Q2 Form 10-Q later reduced the purchase allocation by US$1 million.

The dates prevent lazy arithmetic. Spirent contributed US$88 million of incremental revenue in Q1, US$55 million in Q2 and US$143 million in the first half. The Q3 core-revenue table reports US$84 million from acquisitions or divestitures, not “Spirent revenue.” It covers the defined recent-transaction perimeter and does not provide an asset split. Assigning all US$84 million to Spirent would overwrite the disclosed boundary.

The regulatory sale also matters conceptually. The retained Keysight perimeter is not the same product portfolio that Spirent had before closing. The VIAVI buyer-side story has its own financing, customer and product economics. Keysight's receipt begins after the cut: which retained capabilities contribute to its order, revenue and margin systems, and what happens when they enter the common cost base?

Core growth and adjusted profit close different ledgers

The revenue bridge removes perimeter changes. The margin bridge asks which expenses belong in an operating comparison. Under GAAP, Q3 gross profit was US$1.216 billion and gross margin 65.8%. Keysight added US$50 million of acquisition-related amortisation and US$8 million of share compensation to present US$1.274 billion of non-GAAP gross profit and a 69.0% margin.

At the operating line, GAAP income was US$461 million. The reconciliation added US$72 million of acquisition-related amortisation, US$47 million of share compensation, US$30 million of acquisition and integration costs, and US$3 million of restructuring and other items. Non-GAAP operating income was US$613 million, or 33.2% of revenue, compared with GAAP's 24.9%.

These adjustments are not identical to the US$84 million removed from revenue. One bridge changes the revenue perimeter. Another changes the cost perimeter. Amortisation records the consumption of acquired intangible assets under purchase accounting. Integration spending records work undertaken to combine operations. Share compensation allocates part of employee reward to equity holders. Removing them may improve period-to-period operating comparison; it does not make their claims disappear.

Keysight then performs a third calculation. Starting with US$613 million of non-GAAP operating income, it removes US$5 million of operating profit from acquisitions or divestitures and adds US$6 million for currency. Core operating income becomes US$614 million. Dividing that by US$1.768 billion of core revenue yields a 34.7% core operating margin.

The result is counterintuitive only if every adjustment is expected to move in the same direction. The acquired/divested perimeter contributed positive non-GAAP operating profit, while currency was adverse. After both adjustments, core operating income is US$1 million higher than non-GAAP income even though core revenue is US$78 million lower than reported revenue. Core margin therefore exceeds non-GAAP margin. That is arithmetic, not a verdict on the acquisition.

The cost-allocation rule is the transition receipt

The Q2 filing describes Keysight's segment system. Segment results exclude allocated corporate charges, central sales costs and global services, marketing and technology functions. Corporate charges include legal, accounting, real estate, insurance, information technology, treasury and other infrastructure. Keysight allocates those charges on what it considers a reasonable use-or-benefit basis.

Then comes the decisive sentence: newly acquired businesses are not allocated these charges until they are integrated into shared services and corporate infrastructure.

That rule is understandable. An acquired business cannot consume a common system before it has joined it. It also means the cost perimeter changes over time. A new operation may first appear with direct expenses but without a full allocation of the platform it will later use. When systems migrate and corporate services become shared, segment comparability can change even without a change in customer demand.

Management now says integration efforts are largely complete, including systems migrations, one quarter ahead of schedule. It expects 80–90% of a US$100 million cost-synergy target to be realised on a run-rate basis exiting Q4. Both statements are forward-looking boundary markers. “Largely complete” is not “every allocation is stable.” A Q4 exit run rate is not US$80–90 million of Q3 cash savings.

This is why the next useful disclosure is not simply another core-growth rate. It is a bridge showing when each acquired business entered shared-service allocation, what cost moved into the segments, what gross savings were realised, what integration expense remained, and how GAAP cash changed. Without that transition receipt, a reader can measure growth accurately while still comparing margins across moving cost boundaries.

Cash is a separate confirmation

Keysight generated US$437 million of operating cash in Q3 and reported US$403 million of company-defined free cash flow. It ended the quarter with US$2.605 billion of cash and equivalents. These figures support the claim that the operating system is producing liquidity while it integrates acquisitions.

They do not settle acquisition return. Quarterly cash contains working-capital timing, collections, supplier payments, taxes and other movements that are not assigned to individual transactions in the presented tables. Nor does the US$100 million synergy target establish cash payback for US$1.564 billion of Spirent consideration or US$580 million for OSG.

The bounded conclusion is stronger. Keysight's record quarter survives the constant-perimeter test: 52% core order growth and 31% core revenue growth are substantial. Its GAAP profitability also improved. The unresolved question is not whether the headline is fake. It is how much of the integrated operating gain remains after recent businesses carry the same shared system, the adjustment gap narrows and the Q4 synergy forecast meets a GAAP and cash receipt.

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