Arista Networks reported fiscal 2025 fourth‑quarter revenue of $2.488 billion, a 28.9% year‑over‑year increase, and a non‑GAAP net income of $1.047 billion, translating to an adjusted earnings per share of $0.82. The $0.82 EPS beat the consensus estimate of $0.76 by $0.06, or 7.9%, and marked the first time the company has surpassed $1 billion in quarterly net income.
Revenue growth was driven by robust demand for the company’s AI‑centric networking platforms. Service revenue rose 19.6% to $428 million, representing 17.1% of total revenue, a slight decline from 18.7% in Q3. Compared with Q4 2024, revenue was $1.93 billion and GAAP net income was $801 million, underscoring the acceleration in both top‑line and profitability.
Operating margin held at 47.5%, while the non‑GAAP gross margin slipped to 63.4% from 64.2% in the prior year. Management attributed the modest margin compression to a higher mix of large cloud and AI “Titan” customers, which command lower pricing but drive higher volume. The company’s disciplined cost structure and operational leverage helped maintain margin resilience amid rising component costs.
For the first quarter of 2026, Arista guided revenue of $2.60 billion, a non‑GAAP gross margin of 62%–63%, and an operating margin of 46%. The full‑year 2026 revenue target was raised to $11.25 billion, reflecting a 25% growth outlook, and AI networking revenue was projected to reach $3.25 billion, a doubling from the previous year’s $1.63 billion.
CFO Chantelle Breithaupt highlighted the company’s “strong operating leverage inherent in our model, providing a powerful exit rate as we head into 2026. By pairing 29% revenue growth with a disciplined 47.5% operating margin, Arista achieved a historic milestone: surpassing $1 billion in quarterly net income.” CEO Jayshree Ullal added that the firm is “now doubling from 2025 to 2026 to $3.25 billion in AI networking revenue” and that the 2026 guidance reflects “25% annual growth, accelerating now to $11.25 billion.” She also noted supply‑chain constraints, saying the company is “experiencing shortages in memory.”
Investors responded favorably to the earnings beat and optimistic outlook, citing strong AI demand and margin resilience. The company’s transition from a cloud‑networking vendor to a key AI infrastructure provider is reinforced by the record net income and the raised guidance. Headwinds remain in the form of supply‑chain constraints and rising component costs, but management’s disciplined cost control and pricing power are expected to mitigate these risks.
Arista’s strategic focus on AI infrastructure is underscored by the record shipment of 150 million ports in 2025 and the concentration of two large customers accounting for 16% and 26% of total business. The company’s continued investment in high‑margin service offerings and its Extensible Operating System position it to capture further market share in the rapidly expanding AI networking segment.
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