Cisco Q4 Revenue Hits Record $17.3B as AI Orders Surge

The Networking Company Became an AI Company

Cisco closed its fiscal year on August 12, 2026, and the headline number is the kind that reframes how a company gets valued. Revenue of $17.3 billion for the fourth quarter, up 18% year over year, is a record — and the reason sits in the order book.

• Q4 revenue of $17.3 billion, up 18%, with non-GAAP EPS of $1.22, up 23% — both above guidance
• Full-year fiscal 2026 revenue of $63.3 billion, up 12% from $56.7 billion
• $9.3 billion in hyperscaler AI infrastructure orders across fiscal 2026, roughly 4.5x the prior year
• Fiscal 2027 guidance of $72.2B to $73.4B, implying about 15% growth at the midpoint

Four of the largest cloud providers each grew AI infrastructure orders by triple digits in the quarter, and Cisco took $4 billion in hyperscaler AI orders in Q4 alone.

Why Is the Order Book More Interesting Than the Revenue?

Because orders lead revenue, and the gap here is large. Cisco recognized $4 billion of AI infrastructure revenue in fiscal 2026 against $9.3 billion in orders. CFO Mark Patterson guided fiscal 2027 AI infrastructure revenue to $7.5 billion — nearly double.

That is the useful signal for anyone modeling this business. The revenue line reflects what shipped; the order line reflects what hyperscalers have committed to buy. When the second is running well ahead of the first, near-term revenue has a floor that does not depend on demand staying strong — it depends on Cisco delivering what has already been booked.

Back in May, when we covered Cisco's Q3 results and its $9 billion AI order forecast, that figure was a projection. Finishing the year at $9.3 billion means the company cleared its own target, which is the sort of execution detail that matters more than any single quarter's beat.

What Should Investors Watch on Margins?

Shares fell 4.6% in after-hours trading to $118.18, and the reason was not the top line — it was the margin outlook. Management flagged pressure from a heavier hardware mix going forward.

This is worth understanding rather than worrying about. AI infrastructure sales skew toward hardware, and hardware carries lower margins than software and subscriptions. So the same mix shift that is driving the growth is the one compressing the margin percentage. A company earning more total gross profit on lower-percentage margins is in a fundamentally different position than one losing pricing power, and conflating the two is a common way to misread an infrastructure cycle.

The honest question for the year ahead is how far that mix shifts and whether Cisco's software attach rate keeps pace with hardware volume. That is a real thing to track, and management put it on the table themselves rather than burying it.

The Broader AI Infrastructure Read-Through

Cisco's numbers land in a season that has been consistently strong across the AI supply chain. TSMC's record July revenue and Datadog's 36% growth on AI agent workloads point the same direction from different layers of the stack.

What Cisco adds is visibility into the networking layer specifically. Hyperscalers building AI clusters need interconnect at a scale that grows faster than compute, because every added accelerator multiplies the traffic between them. A 4.5x jump in orders is that dynamic showing up on someone's income statement — and for readers following our stock and market coverage, it is a reminder that the picks-and-shovels layer of this buildout extends well past the chip vendors.

Sources: Cisco Investor Relations — August 12, 2026; Investing.com Q4 FY26 analysis — August 12, 2026.