Arista Networks (ANET) reported third-quarter 2026 revenue of about $3.66 billion, up 58.5% year over year and above its $3.3 billion guidance, its fastest growth since the IPO. Non-GAAP operating margin was 49.1%, and non-GAAP diluted EPS was $1.20, versus $0.77 a year earlier. With partners including AMD, Arm and Broadcom, the company launched open-standard rack-scale architectures for AI networks, and it joined the S&P 100 in September. For the fourth quarter, it guides to revenue of $3.9–4.0 billion, a 48–49% non-GAAP operating margin and non-GAAP EPS of $1.26–1.30.
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