Arista Networks stock beats Q3 forecasts on 58.5% revenue growth

Arista Networks reported third-quarter results on Tuesday, November 3, after the U.S. market close, delivering revenue growth that management described as its strongest since the company's initial public offering. The results came from the quarter ended September 30 and were released in an Arista Networks financial release.

AI demand lifts quarterly performance

Revenue reached 3.66 billion US dollars, up 58.5 percent from the year-earlier quarter and 20.5 percent from the second quarter. The result exceeded Arista's own quarterly guidance of 3.3 billion US dollars, while the company said demand remained broad across customer sectors.

GAAP diluted earnings per share came to 1.22 US dollars, compared with 0.67 US dollars a year earlier. Non-GAAP diluted earnings per share reached 1.20 US dollars, up from 0.77 US dollars in the prior-year period. GAAP operating margin was 44.9 percent, while the non-GAAP operating margin was 49.1 percent.

Chief Executive Jayshree Ullal said the company had achieved record profitability and greater relevance in the generative and agentic artificial intelligence era. Arista also highlighted open Ethernet rack-scale architectures for scale-up and scale-out AI fabrics, developed with partners including AMD, Arm, Broadcom, Meta, Microsoft and Qualcomm.

Fourth-quarter outlook stays above expectations

For the fourth quarter, Arista expects revenue between 3.9 billion and 4.0 billion US dollars. The company forecasts a non-GAAP operating margin of 48 to 49 percent and non-GAAP diluted earnings per share of 1.26 to 1.30 US dollars. The guidance excludes items such as stock-based compensation, intangible-asset amortization and selected tax effects.

The outlook gives investors a fresh measure of whether AI infrastructure spending can sustain Arista's unusually strong expansion. It also keeps attention on supply constraints, product costs and customer concentration, which the company lists among the factors that could affect future results.

What the report means for investors

Arista Networks stock traded at 159.73 euros on Lang & Schwarz at 13:16 CET on Wednesday, November 4. Investors can follow the real-time quote of Arista Networks stock.

The earnings release provides a stronger fundamental reference point for the stock, but the next phase depends on execution against the elevated fourth-quarter targets. The September quarter also showed that profitability held up while Arista expanded its AI networking offering, although the company continues to flag supply-chain and market risks.

The broader S&P 500 remains the relevant market backdrop for this U.S. technology stock.

More news and analysis are available on Arista Networks stock.