Arista Networks told investors at Citi's Global TMT Conference on Sept. 10 that it expects 2025 revenue of $12.6 billion, a 40% year‑over‑year increase. The company guided gross margins between 62% and 64% and operating margins around 48%, reflecting roughly 100 basis points of margin expansion over the past two years.
Purchase commitments rose to $9.6 billion at the end of the second quarter, up from $3.6 billion three quarters earlier, as customers lock in chip capacity through 2026‑27. The firm said the AI cycle is now in its second‑to‑third year, with deployment acceptance typically taking 18‑24 months and a one‑year lead time for chip purchases.
Software revenue is projected to represent 18%‑20% of total sales, while R&D, sales and marketing and general‑administrative expenses are expected to stay at 8%‑10%, 5%‑7% and roughly 1% of revenue, respectively. The campus networking market is estimated to grow from $800 million in 2025 to $1.25 billion in 2026, and the total addressable market cited at the October 2025 analyst day was $105 billion.
Arista sees no scale‑up Ethernet revenue in 2026; trials and pilots are slated for later in the year, with revenue materializing in 2028. Early deployments of nested pluggable optics (XPO) are expected in the second half of 2026, with a ramp in 2028 and co‑packaged optics (CPO) following about a year later.
The company reported two customers each contributing 10% of revenue and anticipates a third, possibly a fourth, to reach the same level in 2025. Enterprise data‑center market share sits at 20%‑22%, while campus networking accounts for about 5%. Regional growth was strong, with EMEA up 36% in the last quarter and APAC led by a new executive from Microsoft.
Arista highlighted the reliability of its EOS operating system, noting CVE rates 30 times lower than rivals and overall availability about one percentage point better than the next‑best competitor. Scale‑across solutions are expected to make up roughly one‑third of the AI mix.
Supply‑chain constraints remain tight at the fab level, with secondary pressure on printed circuit boards, capacitors and other components described as a "Whac‑A‑Mole" challenge.
Chief Financial Officer Chantelle Breithaupt said, "If you have AI experience software and hardware, I think that is what wins in scale across, and we do not feel our competitors have all three." Senior Vice President Tyson Lamoreaux added, "If you're losing GPU workload time because your network is down, that’s a deal breaker for customers."
Arista's shares closed at $192.84 on Sept. 17, up 2.68% on the day, with a year‑to‑date gain of 47%. The stock trades at a price‑to‑earnings multiple of 60, a current ratio of 2.96 and an Altman Z‑Score of 18.88, indicating a strong balance sheet with cash exceeding debt.
