Arista Networks Just Delivered Its First $3 Billion Quarter. Here's What It Means for the AI Networking Trade.

Arista's second-quarter revenue rose 37.7% year over year to $3.036 billion, the company's first $3 billion quarter.

Management lifted its full-year outlook to about $12.6 billion, roughly 40% growth.

Gross margin came in two points lower than a year earlier, at 63.4% on a non-GAAP basis.

Arista Networks (NYSE: ANET) has its first $3 billion quarter. The networking company reported second-quarter revenue of $3.036 billion on Tuesday evening, up 37.7% year over year, while non-GAAP (adjusted) earnings per share climbed about 40% to $1.02.

Investors didn't wait long to reward it. Shares, which closed Tuesday at $190.51, pointed sharply higher in pre-market trading Wednesday as of this writing -- above their previous 52-week high of $194.35. That would put the stock at its highest level in at least a year if the gain holds into the regular session.

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Arista sells the high-speed switches and routing platforms that move data inside artificial intelligence (AI) data centers, making it arguably one of the purest ways to invest in AI networking. So a milestone quarter here says something about the whole trade. Here's what it means -- and why I'm not chasing the stock this morning.

The quarter's growth rate wasn't just big. It was faster than the quarter before. Arista's revenue rose about 35% year over year in the first quarter of 2026, then 37.7% in the second. The second quarter's total also came in 12.1% above the first quarter's -- growth stacking on growth.