ANET

Q4 2025

Date: 2026-02-12Rank: #2286Forward Promise: bullish

Arista Networks delivered a strong finish to fiscal 2025, with Q4 revenue of $2.49 billion, up 28.9% year-over-year, driving full-year revenue to a record $9.0 billion (28.6% growth). Non-GAAP operating margins remained robust at 47.5% for the quarter and 48.2% for the year, while net income exceeded $1 billion in Q4 alone. The company raised its fiscal 2026 guidance significantly, targeting 25% revenue growth to $11.25 billion, driven by a doubling of AI networking revenue to $3.25 billion and continued expansion in campus and routing adjacencies. Despite rising memory and silicon costs, management maintained a gross margin outlook of 62–64% and raised operating margin expectations to approximately 46%.

Bullishness Score

62.83

μ Mean

68.44

σ Uncertainty

1.87

Forward Promise

7.2

Management Tone

Management exhibited a high degree of confidence and assertiveness throughout the call, particularly regarding AI momentum and market share gains. While prepared remarks were celebratory, the tone in Q&A shifted to a more measured, pragmatic stance when addressing supply chain headwinds and the specific timing of customer ramps. Jayshree Ullal was direct in correcting analyst assumptions but remained enthusiastic about the long-term 'Arista 2.0' vision.

Confidence: HIGH — Management raised guidance aggressively mid-year and defended their market position against skepticism about non-AI growth and supply constraints.

Strategic Signals

Arista is positioning itself as the 'gold standard' for AI networking, successfully pivoting from a cloud-only focus to a hybrid model where AI networking revenue is expected to double to $3.25 billion in 2026. This shift is supported by the deployment of 800G and upcoming 1.6T products, which are critical for handling the massive throughput requirements of Generative AI. The company's involvement in the Ultra Ethernet Consortium and ESUN standards underscores its commitment to open standards, differentiating it from proprietary competitors.

The 'Arista 2.0' strategy is gaining traction, with campus and routing adjacencies now contributing approximately 18% of revenue. Management set an aggressive goal of $1.25 billion for campus revenue in 2026, driven by the cognitive AIVA platform and the VeloCloud acquisition. This diversification reduces reliance on hyper-scale cloud titans and opens up a massive $100+ billion TAM in the enterprise sector.

Supply chain discipline is a key strategic lever. Despite 'horrendous' price increases in memory and silicon, Arista has secured $6.8 billion in purchase commitments to ensure supply availability. Management indicated a willingness to implement selective price hikes on memory-intensive SKUs, signaling pricing power in a tight supply environment that could protect margins if executed well.

The company is deepening its engagement with 'AI Specialty Providers' and 'Neo Clouds' (e.g., Oracle, xAI, Anthropic), moving beyond the traditional hyperscalers. This diversification strategy is mitigating customer concentration risk, as evidenced by the anticipation of one or two new 10% customers in 2026. The shift toward a multi-vendor environment, highlighted by growing traction with AMD (20–25% of deployments), reinforces Arista's open-architecture value proposition.

Key Metrics

Q4 Revenue$2.49B+28.9% YoY

FY 2025 Revenue$9.0B+28.6% YoY

Q4 Non-GAAP GM63.4%-80 bps YoY

Q4 Op Margin47.5%N/A

Q4 EPS$0.82+24.2% YoY

FY 2026 Revenue Guidance$11.25B+25% YoY

FY 2026 AI Revenue Goal$3.25B+116% YoY

Product Deferred Revenue$5.4B+$469M QoQ

Guidance

FY 2026 Revenue: $11.25B (25% growth)

FY 2026 Gross Margin: 62% to 64%

FY 2026 Operating Margin: Approximately 46%

Q1 2026 Revenue: Approximately $2.6B

Q1 2026 Gross Margin: 62% to 63%

FY 2026 Campus Revenue: $1.25B

Bottom Line

Price Target: N/A

Arista Networks is executing at a high level, successfully leveraging the generative AI boom to drive 28.6% revenue growth and expand its market share. The shift to 'Arista 2.0' is materializing, with AI networking revenue set to double and campus/routing adjacencies contributing nearly 20% of sales. While supply chain headwinds and 'lumpy' deferred revenue create quarterly volatility, the company's technological leadership in 800G/1.6T Ethernet, open-architecture strategy (gaining share with AMD), and robust balance sheet ($10.7B cash) position it to outperform. The raised guidance for 2026 (25% growth) signals confidence that is rare in the networking space, justifying a premium multiple.

Forward Promise

Overall: 7.2 · bullish

Confident AI growth, pragmatic on supply, defensive on core.

Management is clearly bullish on AI demand, backing it with raised guidance and specific customer wins. While supply chain costs and deferred revenue opacity create short-term volatility, the strategic positioning in AI and campus expansion supports a strong forward outlook.

Red Flags

Significant margin pressure is looming from 'order of magnitude' increases in memory and silicon costs. While management held the 62–64% GM guidance for 2026, they admitted they 'cannot absorb' further price increases without passing them on to customers. This introduces volatility risk; if demand softens, Arista may be stuck with high inventory costs or forced to choose between margin preservation and market share.

The guidance for non-AI, non-campus revenue appears stagnant, effectively flat year-over-year based on analyst calculations. Tal Liani (BofA) pressed management on why 60% of the business is guided to zero growth. Management's response—that they don't allocate and it's 'too early'—did not fully dispel concerns that core enterprise or legacy cloud demand might be slowing or being cannibalized by AI resource allocation.

Product deferred revenue continues to balloon, ending the quarter at $5.4 billion, with management admitting it is 'super hard' to predict when this will recognize. This creates a 'lumpy' revenue risk profile where future quarters could miss simply due to the timing of large customer acceptance criteria (12–18 months for AI deployments). The lack of visibility here makes quarterly guidance less reliable.

Management acknowledged that 'scale-up' networking revenue—tied to the new ESUN specification and 1.6T speeds—is largely a 2027 event. This creates a potential gap in the growth narrative for late 2026, as the current 800G cycle matures and the next major product cycle has not yet hit volume production.

Macro Insights

AI Infrastructure: AI networking demand is robust and shifting to Ethernet. 'The network lags a little' behind GPU CapEx, implying a sustained multi-year cycle for Arista as back-end clusters are built out and connected to front-end inference networks.

Supply Chain: Memory and silicon fabrication costs are 'order of magnitude' higher, acting as a tax on AI hardware. This favors vertically integrated players or those with strong pricing power, but creates margin risk for the broader ecosystem.

Enterprise IT: Enterprise adoption of AI and cloud networking is accelerating. Arista noted 'traction in the $5M to $10M customer category,' suggesting the long-awaited enterprise refresh cycle is underway.