Shares of Cisco Systems (NASDAQ: CSCO) fell 8.4% on Wednesday, August 13, 2026, closing at $113.47 after the networking giant delivered a Q4 fiscal 2026 report that beat almost every headline number and raised full-year guidance. The paradox — record revenue, record AI orders, a raised outlook, and yet a double-digit selloff — captures a debate that has been growing all year: how much of Cisco’s AI networking upside is already in the price, and what is the margin cost of chasing it?
Chief Executive Chuck Robbins pitched the print as validation of the company’s AI pivot. Investors keyed on the mix.
Q4 FY26 by the numbers
Per Cisco’s Q4 press release, revenue rose to $17.3 billion, up 18% year over year and a record for the quarter. Non-GAAP EPS came in at $1.22, up 23%; GAAP EPS was $0.97, up 52%. Total product orders grew 35% year over year, with networking orders alone up 40% — the strongest order growth Cisco has posted in several years.
| Metric | Q4 FY26 | Q4 FY25 | YoY change |
|---|---|---|---|
| Revenue | $17.3B | $14.7B | +18% |
| GAAP EPS | $0.97 | $0.64 | +52% |
| Non-GAAP EPS | $1.22 | $0.99 | +23% |
| GAAP gross margin | 64.1% | n/a | product mix |
| Non-GAAP gross margin | 66.3% | n/a | below Street |
| Non-GAAP operating margin | 35.9% | n/a | flat-to-down |
| Total product orders | +35% | n/a | strongest in years |
| Networking product orders | +40% | n/a | AI-driven |
The AI-orders line that mattered most
Cisco disclosed $4 billion of AI infrastructure orders in Q4, bringing the full-year FY26 total to $9.3 billion — well above the $1 billion the company was reporting a year earlier and above management’s prior full-year framing near $2 billion at the start of the fiscal year. The customer set includes the six largest hyperscalers, with growing contribution from sovereign-AI and enterprise deployments as Cisco’s Nexus and Silicon One products fold into large training and inference fabrics.
Nvidia’s NVLink-based rack systems remain the reference architecture for the largest training clusters, but Cisco has been winning the inter-cluster fabric — the ethernet spine connecting racks and buildings — where its Nexus 9000 and Silicon One switches compete directly with Arista Networks and increasingly against merchant-silicon whitebox builds.
Why the stock still fell 8%
The market’s issue was not with the top-line beat. It was with what the mix implied for the margin structure going forward. Non-GAAP gross margin of 66.3% came in at the low end of the company’s guided range and roughly a point below where the sell-side had modeled the quarter. AI-networking hardware carries lower gross margin than the software and services that Cisco has spent years pushing higher into the mix. As AI orders scale from single-digit-billions to double-digit-billions of revenue, the same margin pressure will show up in the P&L over the next several quarters.
The fiscal 2027 guide reinforced the concern. Cisco guided FY27 revenue to $72.2–$73.4 billion and non-GAAP EPS to $5.05–$5.11, versus a consensus that had already crept above $5.20 as analysts extrapolated the AI-orders trajectory. Q1 FY27 was guided to $18.0–$18.2 billion of revenue and $1.32–$1.34 of non-GAAP EPS — solid on the top line, but the EPS midpoint sat below where the buy-side had been positioned.
Add a stock that had rallied from roughly $70 last summer to a $130 high last month, and even a good quarter carries a high bar. The forward multiple on the FY27 midpoint sits near 22 times, roughly double where Cisco traded through most of the last decade.
Full-year FY26: the shape of the year
For the full fiscal year, Cisco delivered $63.3 billion in revenue (up 12%), GAAP EPS of $3.33 (up 31%), and non-GAAP EPS of $4.33 (up 14%). The Splunk acquisition, which closed in fiscal 2024, is now fully lapped in the year-over-year comparison; the FY26 growth is organic and driven by networking. Free cash flow remained strong, and the company continued its dividend and buyback program.
What to watch next
Three signals will matter over the next two quarters. First, the pace of AI-order growth: bulls will need to see the run-rate cross $12–$15 billion annualized to justify current expectations, and any deceleration will amplify margin worries. Second, the mix within networking: Silicon One and Nexus 9000 growth versus lower-margin merchant-silicon competition. Third, the sequential margin trajectory — whether management can hold non-GAAP gross margin above 66% as AI hardware scales, or whether a step-down closer to 64% becomes the new baseline.
For now, the tape is telling investors it wants to see the margin defended before it re-rates the multiple higher.
Sources
- Cisco Reports Fourth Quarter Earnings — Cisco Newsroom (Aug 13, 2026)
- CSCO quote — Yahoo Finance
- Cisco annual reports (10-K filings)
Disclosure: This article is for informational purposes only and is not investment advice.