Arista Networks has leaned into what it calls the 'Year of Refresh' to reinvigorate its AI growth story, driven by sustained enterprise and hyperscale demand for next-generation 7130 series switches. Management highlighted that sales of its Cortex™ AI platforms rose 45% year-over-year in the fiscal third quarter, contributing to a 22% increase in total revenue to $1.12 billion. The company expects AI-driven workloads to account for roughly 30% of revenue by the end of fiscal 2026, up from 18% in the prior year.

Shares of Arista jumped 8.7% in the most recent trading session, trading 2.4 million shares—nearly double the 30-day average volume. Intraday, the stock peaked at a 12% gain before paring back, extending its year-to-date rise to over 7%. Market participants cited broad sector rotation into cloud infrastructure names and a positive commentary from several data center operators as catalysts for the move.

Despite the rally, the latest trend in consensus estimate revisions has been mixed. Over the past month, four analysts have lowered their fiscal fourth-quarter non-GAAP EPS forecasts, bringing the consensus down by $0.05 to $1.81. Conversely, six analysts have raised full-year 2026 revenue projections by a combined $120 million, buoyed by stronger-than-expected bookings in Europe. The net result is a tightly clustered EPS range of $1.78 to $1.85 for Q4, suggesting limited upside in near-term guidance.

Investors are bracing for Arista’s fourth-quarter report, due on February 12, with expectations centered on revenue of $1.15 billion and non-GAAP EPS of $1.83. Market commentary has pointed to potential upside from margin leverage if component costs remain stable, while some fund managers are cautious about any signs of enterprise spending moderation. This upcoming release has already contributed to elevated implied volatility in Arista options, underscoring the importance of the print for the stock’s next directional move.