Arista Networks Inc Earnings - Q2 2026 Analysis & Highlights
Arista Networks reported record Q2 2026 results driven by exceptional AI infrastructure demand, achieving its first $3 billion quarter while raising full-year guidance to $12.6 billion (40% growth), reflecting significant supply chain improvements and expanding customer adoption across scale-up, scale-out, and scale-across AI networking architectures.
Key Financial Results
Q2 2026 total revenues reached just over $3 billion, up 37.7% year-over-year and above guidance of $2.8 billion.
Gross margin was 63.4% in Q2, down from 65.6% in the prior year driven by end customer mix, but up from 62.4% in the prior quarter benefiting from tariff refunds and customer mix.
Operating income for the quarter was $1.5 billion, or 49.9% of revenue.
Net income for the quarter was $1.3 billion, or 42.9% of revenue.
Diluted earnings per share was $1.02, representing a 39.7% increase from $0.73 in the prior year.
International revenues came in at $697.8 million or 23% of total revenue, up from 15.5% last quarter.
Operating cash flow generated approximately $1.1 billion in Q2, driven by robust earnings performance coupled with an increase in deferred revenue.
Business Segment Results
AI fabrics momentum with Etherlink switches now exceeds 100 cumulative customers, up from the initial 4 to 5 customers mentioned in 2024.
Campus revenue goal is at least $1.25 billion for 2026.
AI fabrics goal is at least $3.5 billion for 2026.
Scale across switching and routing TAM is forecasted to be roughly $15 billion to $20 billion in 2030, with scale across use case expected to be approximately 30% of overall AI target of at least $3.6 billion in 2026.
Arista entered the Fortune 500 list in 2026 and is now included in the Russell 50.
Capital Allocation
Cash, cash equivalents and marketable securities ended the quarter at approximately $13.3 billion, up from $12.4 billion at the end of Q1.
No common stock repurchases occurred in Q2.
Of the $1.5 billion repurchase program approved in May 2025, $817.9 million remain available for repurchase in future quarters.
Capital expenditures for the quarter were $29.7 million, with construction work to build expanded facilities in Santa Clara expected to be completed by the end of fiscal 2026.
Purchase commitments at the end of the quarter were $9.7 billion, up from $8.9 billion at the end of Q1, representing purchases for chips related to new products and AI deployments.
Industry Trends and Dynamics
The AI infrastructure market is experiencing rapid innovation and scale deployment not previously witnessed in combination.
Scarcity of compute capacity, physical space and gigawatts of power mandates that AI infrastructure must be designed thoughtfully.
Industry-wide supply tightness and rising component costs persist, affecting the entire industry.
The industry is expected to have a two-year supply problem, with the industry not expected to get out of it until 2028.
Frequent software upgrades are a hard reality in AI networks, especially as AI both uncovers security vulnerabilities and creates tools to exploit them.
Competitive Landscape
Arista's EOS architecture provides state-sharing programmability and single binary, foundational for reliable accelerator operation and optimal compute utilization.
Arista pioneered the use of Leaf and Spine topologies in data center and cloud networks over a decade ago and is now building upon that with lossless and high-performant AI fabrics.
White Box solutions are tactical and more prevalent in simple scale-up or scale-out use cases where software and system requirements are low.
Arista's system-wide approach with EOS and good hardware is winning out in the current scarcity of supply chain and people when needing to deploy AI fast.
Arista is not a fan of proprietary implementations and is committed to solving for open CPO (co-packaged optics) with socketed optical engines and pigtail fibers.
Macroeconomic Environment
Tariff refunds provided 20 to 30 basis points of benefit in Q2 versus guidance, with approximately 30 to 40 basis points benefit versus prior year.
Price increases will affect Arista only towards the end of the year or more like next year because the company is still going through a lot of backlogs.
Arista has increased multi-year purchase commitments from approximately $3.6 billion a year ago to approximately $9.7 billion by the end of Q2 2026.
Growth Opportunities and Strategies
Arista developed innovative features including smart system upgrade (SSU), deep analytics, and load balancing at scale for AI training workloads.
The latest Arista member is the 7060XE7 with 400 terabit capacity and 1.6 terabit throughput as well as the first liquid cooling options.
Arista's 7800 AI Spine platform continues to be the flagship spine for distributed scale across applications, providing traffic isolation, contextual routing and security.
Scale across AI innovations deliver programmable and deterministic routing, SRV6, multi-plane forwarding, multi-tenancy and traffic engineering, as well as load balancing across regions.
Arista introduced a suite of EOS extensible operating system innovations to enable a robust AI network capable of diverse models and accelerators.
SSU (smart system upgrade) enables upgrade of switch software without any disruption, ensuring customers stay secure without sacrificing XPU cycles.
MRC (Multipath Reliable Connection) enables senders to spray a single flow across many paths through the fabric, where receivers reassemble any data that arrives out of order.
SRV6 (segment routing) is being used to load balance an AI fabric, with the sender tagging each packet with a stack of SRV6 segment IDs dictating the exact path.
Arista is establishing a liquid cooling supply chain capable of driving and delivering the next generation of AI infrastructure.
Arista has hired Eugenia Corrales, a global operations executive with over 35 years of engineering, networking and manufacturing expertise, and built an outstanding suite of leaders for new product engineering, contract manufacturing, global supply chain, direct fulfillment and logistics.
Arista secured multi-year agreements with leading vendors of strategic components and qualified new suppliers in key areas to limit risk.
Memory supply has been secured for 2026, with extended visibility well into 2027 across DDR4, DDR5 and NAND memory.
For PCBs and optics, Arista is now able to build capacity in a 12-month window and has strengthened engagement and commitments from key suppliers.
Arista now has three contract manufacturers and three distribution facilities providing geographic diversity in the US, Asia, and Mexico.
Arista has established a new area with liquid cooling supply chain including cold plate, quick disconnect and tubing vendors with capacity agreements.
Financial Guidance and Outlook
2026 fiscal year revenue guidance raised to $12.6 billion, representing 40% annual growth, an incremental $2.1 billion over the analyst day goal of $10.5 billion and $1.1 billion over recent projections of $11.5 billion in May 2026.
Gross margin range for fiscal 2026 maintained at 62% to 64% inclusive of mix and anticipated supply-chain cost increases for memory and silicon.
Fiscal 2026 operating margin target increased to a range of 48% to 49%, while maintaining an expected tax rate of 21.5%.
Q3 2026 guidance includes revenues of approximately $3.3 billion.
Q3 2026 gross margin expected at approximately 63%.
Q3 2026 operating margin expected between 48% and 49%.
Q3 2026 diluted earnings per share expected between $1.06 and $1.08, with approximately 1.279 billion diluted shares.
Q3 2026 effective tax rate expected at approximately 21.5%.
Deferred revenue balance was approximately $6.9 billion, up from $6.2 billion in the prior quarter, with product deferred revenue increasing approximately $600 million sequentially.
DSOs came in at 68 days, up from 64 days in Q1 due to timing of customer shipments and invoicing.
Inventory turns remained at 1.7x for the quarter, with inventory ending at $2.5 billion, up from $2.4 billion last quarter.
Accounts payable days are 57 days, up from 54 days in Q1, reflecting timing of inventory receipts and payments.
Supply Chain and Operations
Arista has taken individual and aggressive proactive steps to address tight supply chain challenges.
Manufacturing rigor is based on a three-pronged approach including people and leadership, partnering closely with key suppliers, and increased multi-year purchase commitments.
Arista has improved lead times and inventory management of thousands of component SKUs, improving sub-component pipelining and multi-sourcing.
Relationships with strategic silicon vendors continue to be strong with excellent collaboration in both supply chain and technical engagements.
Arista has increased resiliency through optionality and expanded vendor qualification.
Inventory level fluctuations are expected to continue as the company works through balancing of component timing and availability.
Product Innovation and Technology
Arista's EOS provides a single unified operating system supporting SRV6 intelligence all the way from the scale out fabric to the long distance scale across routing.
The 1.6T product will take about six months to a year to get to production, with trials expected in the second half of 2026 with single digit but very large customers, and real production expected in 2027.
The 800G product was in trials in 2023 and 2024, with real ramp coming in 2025 and 2026.
Arista is working on open CPO (co-packaged optics) which is in very early stages and probably comes into examples and trials next year.
Majority of the world will still remain pluggable optics and copper, but there will be some amount of co-packaged optics in 2028 and 2029.
